view tests/test-lfs-test-server.t @ 46582:b0a3ca02d17a

copies-rust: implement PartialEqual manually

Now that we know that each (dest, rev) pair has at most a unique CopySource, we
can simplify comparison a lot.

This "simple" step buy a good share of the previous slowdown back in some case:

Repo            Case                                  Source-Rev   Dest-Rev      # of revisions  old time    new time      Difference    Factor    time per rev
---------------------------------------------------------------------------------------------------------------------------------------------------------------
mozilla-try     x00000_revs_x00000_added_x000_copies  9b2a99adc05e 8e29777b48e6 : 382065 revs,  43.304637 s,  34.443661 s,  -8.860976 s, × 0.7954,    90 µs/rev


Full benchmark:

Repo            Case                                  Source-Rev   Dest-Rev      # of revisions  old time    new time      Difference    Factor    time per rev
---------------------------------------------------------------------------------------------------------------------------------------------------------------
mercurial       x_revs_x_added_0_copies               ad6b123de1c7 39cfcef4f463 :      1 revs,   0.000043 s,   0.000043 s,  +0.000000 s, × 1.0000,    43 µs/rev
mercurial       x_revs_x_added_x_copies               2b1c78674230 0c1d10351869 :      6 revs,   0.000114 s,   0.000117 s,  +0.000003 s, × 1.0263,    19 µs/rev
mercurial       x000_revs_x000_added_x_copies         81f8ff2a9bf2 dd3267698d84 :   1032 revs,   0.004937 s,   0.004892 s,  -0.000045 s, × 0.9909,     4 µs/rev
pypy            x_revs_x_added_0_copies               aed021ee8ae8 099ed31b181b :      9 revs,   0.000339 s,   0.000196 s,  -0.000143 s, × 0.5782,    21 µs/rev
pypy            x_revs_x000_added_0_copies            4aa4e1f8e19a 359343b9ac0e :      1 revs,   0.000049 s,   0.000050 s,  +0.000001 s, × 1.0204,    50 µs/rev
pypy            x_revs_x_added_x_copies               ac52eb7bbbb0 72e022663155 :      7 revs,   0.000202 s,   0.000117 s,  -0.000085 s, × 0.5792,    16 µs/rev
pypy            x_revs_x00_added_x_copies             c3b14617fbd7 ace7255d9a26 :      1 revs,   0.000409 s,   0.6f1f4a s,  -0.000087 s, × 0.7873,   322 µs/rev
pypy            x_revs_x000_added_x000_copies         df6f7a526b60 a83dc6a2d56f :      6 revs,   0.011984 s,   0.011949 s,  -0.000035 s, × 0.9971,  1991 µs/rev
pypy            x000_revs_xx00_added_0_copies         89a76aede314 2f22446ff07e :   4785 revs,   0.050820 s,   0.050802 s,  -0.000018 s, × 0.9996,    10 µs/rev
pypy            x000_revs_x000_added_x_copies         8a3b5bfd266e 2c68e87c3efe :   6780 revs,   0.087953 s,   0.088090 s,  +0.000137 s, × 1.0016,    12 µs/rev
pypy            x000_revs_x000_added_x000_copies      89a76aede314 7b3dda341c84 :   5441 revs,   0.062902 s,   0.062079 s,  -0.000823 s, × 0.9869,    11 µs/rev
pypy            x0000_revs_x_added_0_copies           d1defd0dc478 c9cb1334cc78 :  43645 revs,   0.679234 s,   0.635337 s,  -0.043897 s, × 0.9354,    14 µs/rev
pypy            x0000_revs_xx000_added_0_copies       bf2c629d0071 4ffed77c095c :      2 revs,   0.013095 s,   0.013262 s,  +0.000167 s, × 1.0128,  6631 µs/rev
pypy            x0000_revs_xx000_added_x000_copies    08ea3258278e d9fa043f30c0 :  11316 revs,   0.120910 s,   0.120085 s,  -0.000825 s, × 0.9932,    10 µs/rev
netbeans        x_revs_x_added_0_copies               fb0955ffcbcd a01e9239f9e7 :      2 revs,   0.000087 s,   0.000085 s,  -0.000002 s, × 0.9770,    42 µs/rev
netbeans        x_revs_x000_added_0_copies            6f360122949f 20eb231cc7d0 :      2 revs,   0.000107 s,   0.000110 s,  +0.000003 s, × 1.0280,    55 µs/rev
netbeans        x_revs_x_added_x_copies               1ada3faf6fb6 5a39d12eecf4 :      3 revs,   0.000186 s,   0.000177 s,  -0.000009 s, × 0.9516,    59 µs/rev
netbeans        x_revs_x00_added_x_copies             35be93ba1e2c 9eec5e90c05f :      9 revs,   0.000754 s,   0.000743 s,  -0.000011 s, × 0.9854,    82 µs/rev
netbeans        x000_revs_xx00_added_0_copies         eac3045b4fdd 51d4ae7f1290 :   1421 revs,   0.010443 s,   0.010168 s,  -0.000275 s, × 0.9737,     7 µs/rev
netbeans        x000_revs_x000_added_x_copies         e2063d266acd 6081d72689dc :   1533 revs,   0.015697 s,   0.015946 s,  +0.000249 s, × 1.0159,    10 µs/rev
netbeans        x000_revs_x000_added_x000_copies      ff453e9fee32 411350406ec2 :   5750 revs,   0.063528 s,   0.062712 s,  -0.000816 s, × 0.9872,    10 µs/rev
netbeans        x0000_revs_xx000_added_x000_copies    588c2d1ced70 1aad62e59ddd :  66949 revs,   0.545515 s,   0.523832 s,  -0.021683 s, × 0.9603,     7 µs/rev
mozilla-central x_revs_x_added_0_copies               3697f962bb7b 7015fcdd43a2 :      2 revs,   0.000089 s,   0.000090 s,  +0.000001 s, × 1.0112,    45 µs/rev
mozilla-central x_revs_x000_added_0_copies            dd390860c6c9 40d0c5bed75d :      8 revs,   0.000265 s,   0.000264 s,  -0.000001 s, × 0.9962,    33 µs/rev
mozilla-central x_revs_x_added_x_copies               8d198483ae3b 14207ffc2b2f :      9 revs,   0.000381 s,   0.000187 s,  -0.000194 s, × 0.4908,    20 µs/rev
mozilla-central x_revs_x00_added_x_copies             98cbc58cc6bc 446a150332c3 :      7 revs,   0.000672 s,   0.000665 s,  -0.000007 s, × 0.9896,    95 µs/rev
mozilla-central x_revs_x000_added_x000_copies         3c684b4b8f68 0a5e72d1b479 :      3 revs,   0.003497 s,   0.003556 s,  +0.000059 s, × 1.0169,  1185 µs/rev
mozilla-central x_revs_x0000_added_x0000_copies       effb563bb7e5 c07a39dc4e80 :      6 revs,   0.073204 s,   0.071345 s,  -0.001859 s, × 0.9746, 11890 µs/rev
mozilla-central x000_revs_xx00_added_0_copies         6100d773079a 04a55431795e :   1593 revs,   0.006482 s,   0.006551 s,  +0.000069 s, × 1.0106,     4 µs/rev
mozilla-central x000_revs_x000_added_x_copies         9f17a6fc04f9 2d37b966abed :     41 revs,   0.005066 s,   0.005078 s,  +0.000012 s, × 1.0024,   123 µs/rev
mozilla-central x000_revs_x000_added_x000_copies      7c97034feb78 4407bd0c6330 :   7839 revs,   0.065707 s,   0.065823 s,  +0.000116 s, × 1.0018,     8 µs/rev
mozilla-central x0000_revs_xx000_added_0_copies       9eec5917337d 67118cc6dcad :    615 revs,   0.026800 s,   0.027050 s,  +0.000250 s, × 1.0093,    43 µs/rev
mozilla-central x0000_revs_xx000_added_x000_copies    f78c615a656c 96a38b690156 :  30263 revs,   0.203856 s,   0.202443 s,  -0.001413 s, × 0.9931,     6 µs/rev
mozilla-central x00000_revs_x0000_added_x0000_copies  6832ae71433c 4c222a1d9a00 : 153721 revs,   1.293394 s,   1.261583 s,  -0.031811 s, × 0.9754,     8 µs/rev
mozilla-central x00000_revs_x00000_added_x000_copies  76caed42cf7c 1daa622bbe42 : 204976 revs,   1.698239 s,   1.643869 s,  -0.054370 s, × 0.9680,     8 µs/rev
mozilla-try     x_revs_x_added_0_copies               aaf6dde0deb8 9790f499805a :      2 revs,   0.000875 s,   0.000868 s,  -0.000007 s, × 0.9920,   434 µs/rev
mozilla-try     x_revs_x000_added_0_copies            d8d0222927b4 5bb8ce8c7450 :      2 revs,   0.000891 s,   0.000887 s,  -0.000004 s, × 0.9955,   443 µs/rev
mozilla-try     x_revs_x_added_x_copies               092fcca11bdb 936255a0384a :      4 revs,   0.000292 s,   0.000168 s,  -0.000124 s, × 0.5753,    42 µs/rev
mozilla-try     x_revs_x00_added_x_copies             b53d2fadbdb5 017afae788ec :      2 revs,   0.003939 s,   0.001160 s,  -0.002779 s, × 0.2945,   580 µs/rev
mozilla-try     x_revs_x000_added_x000_copies         20408ad61ce5 6f0ee96e21ad :      1 revs,   0.033027 s,   0.033016 s,  -0.000011 s, × 0.9997, 33016 µs/rev
mozilla-try     x_revs_x0000_added_x0000_copies       effb563bb7e5 c07a39dc4e80 :      6 revs,   0.073703 s,   0.073312 s,  -0.39ae31 s, × 0.9947, 12218 µs/rev
mozilla-try     x000_revs_xx00_added_0_copies         6100d773079a 04a55431795e :   1593 revs,   0.006469 s,   0.006485 s,  +0.000016 s, × 1.0025,     4 µs/rev
mozilla-try     x000_revs_x000_added_x_copies         9f17a6fc04f9 2d37b966abed :     41 revs,   0.005278 s,   0.005494 s,  +0.000216 s, × 1.0409,   134 µs/rev
mozilla-try     x000_revs_x000_added_x000_copies      1346fd0130e4 4c65cbdabc1f :   6657 revs,   0.064995 s,   0.064879 s,  -0.000116 s, × 0.9982,     9 µs/rev
mozilla-try     x0000_revs_x_added_0_copies           63519bfd42ee a36a2a865d92 :  40314 revs,   0.301041 s,   0.301469 s,  +0.000428 s, × 1.0014,     7 µs/rev
mozilla-try     x0000_revs_x_added_x_copies           9fe69ff0762d bcabf2a78927 :  38690 revs,   0.285575 s,   0.297113 s,  +0.011538 s, × 1.0404,     7 µs/rev
mozilla-try     x0000_revs_xx000_added_x_copies       156f6e2674f2 4d0f2c178e66 :   8598 revs,   0.085597 s,   0.085890 s,  +0.000293 s, × 1.0034,     9 µs/rev
mozilla-try     x0000_revs_xx000_added_0_copies       9eec5917337d 67118cc6dcad :    615 revs,   0.027118 s,   0.027718 s,  +0.000600 s, × 1.0221,    45 µs/rev
mozilla-try     x0000_revs_xx000_added_x000_copies    89294cd501d9 7ccb2fc7ccb5 :  97052 revs,   2.119204 s,   2.048949 s,  -0.070255 s, × 0.9668,    21 µs/rev
mozilla-try     x0000_revs_x0000_added_x0000_copies   e928c65095ed e951f4ad123a :  52031 revs,   0.701479 s,   0.685924 s,  -0.015555 s, × 0.9778,    13 µs/rev
mozilla-try     x00000_revs_x_added_0_copies          6a320851d377 1ebb79acd503 : 363753 revs,   4.482399 s,   4.482891 s,  +0.000492 s, × 1.0001,    12 µs/rev
mozilla-try     x00000_revs_x00000_added_0_copies     dc8a3ca7010e d16fde900c9c :  34414 revs,   0.574082 s,   0.577633 s,  +0.003551 s, × 1.0062,    16 µs/rev
mozilla-try     x00000_revs_x_added_x_copies          5173c4b6f97c 95d83ee7242d : 362229 revs,   4.480366 s,   4.397816 s,  -0.082550 s, × 0.9816,    12 µs/rev
mozilla-try     x00000_revs_x000_added_x_copies       9126823d0e9c ca82787bb23c : 359344 revs,   4.369070 s,   4.370538 s,  +0.001468 s, × 1.0003,    12 µs/rev
mozilla-try     x00000_revs_x0000_added_x0000_copies  8d3fafa80d4b eb884023b810 : 192665 revs,   1.592506 s,   1.570439 s,  -0.022067 s, × 0.9861,     8 µs/rev
mozilla-try     x00000_revs_x00000_added_x0000_copies 1b661134e2ca 1ae03d022d6d : 228985 revs,  87.824489 s,  88.388512 s,  +0.564023 s, × 1.0064,   386 µs/rev
mozilla-try     x00000_revs_x00000_added_x000_copies  9b2a99adc05e 8e29777b48e6 : 382065 revs,  43.304637 s,  34.443661 s,  -8.860976 s, × 0.7954,    90 µs/rev
private                                                                         : 459513 revs,  33.853687 s,  27.370148 s,  -6.483539 s, × 0.8085,    59 µs/rev

Differential Revision: https://phab.mercurial-scm.org/D9653

#require no-reposimplestore no-chg
#testcases git-server hg-server

#if git-server
#require lfs-test-server
#else
#require serve
#endif

#if git-server
  $ LFS_LISTEN="tcp://:$HGPORT"
  $ LFS_HOST="localhost:$HGPORT"
  $ LFS_PUBLIC=1
  $ export LFS_LISTEN LFS_HOST LFS_PUBLIC
#else
  $ LFS_HOST="localhost:$HGPORT/.git/info/lfs"
#endif

#if no-windows git-server
  $ lfs-test-server &> lfs-server.log &
  $ echo $! >> $DAEMON_PIDS
#endif

#if windows git-server
  $ cat >> $TESTTMP/spawn.py <<EOF
  > import os
  > import subprocess
  > import sys
  > 
  > for path in os.environ["PATH"].split(os.pathsep):
  >     exe = os.path.join(path, 'lfs-test-server.exe')
  >     if os.path.exists(exe):
  >         with open('lfs-server.log', 'wb') as out:
  >             p = subprocess.Popen(exe, stdout=out, stderr=out)
  >             sys.stdout.write('%s\n' % p.pid)
  >             sys.exit(0)
  > sys.exit(1)
  > EOF
  $ "$PYTHON" $TESTTMP/spawn.py >> $DAEMON_PIDS
#endif

  $ cat >> $HGRCPATH <<EOF
  > [experimental]
  > lfs.worker-enable = False
  > [extensions]
  > lfs=
  > [lfs]
  > url=http://foo:bar@$LFS_HOST
  > track=all()
  > [web]
  > push_ssl = False
  > allow-push = *
  > EOF

Use a separate usercache, otherwise the server sees what the client commits, and
never requests a transfer.

#if hg-server
  $ hg init server
  $ hg --config "lfs.usercache=$TESTTMP/servercache" -R server serve -d \
  >    -p $HGPORT --pid-file=hg.pid -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS
#endif

  $ hg init repo1
  $ cd repo1
  $ echo THIS-IS-LFS > a
  $ hg commit -m a -A a

A push can be serviced directly from the usercache if it isn't in the local
store.

  $ hg init ../repo2
  $ mv .hg/store/lfs .hg/store/lfs_
  $ hg push ../repo2 --debug
  http auth: user foo, password ***
  pushing to ../repo2
  http auth: user foo, password ***
  http auth: user foo, password ***
  query 1; heads
  searching for changes
  1 total queries in *s (glob)
  listing keys for "phases"
  checking for updated bookmarks
  listing keys for "bookmarks"
  lfs: computing set of blobs to upload
  Status: 200
  Content-Length: 309 (git-server !)
  Content-Length: 350 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "upload": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (git-server !)
            "href": "http://localhost:$HGPORT/.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (hg-server !)
          }
        }
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: uploading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
  Status: 200 (git-server !)
  Status: 201 (hg-server !)
  Content-Length: 0
  Content-Type: text/plain; charset=utf-8
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
  lfs: uploaded 1 files (12 bytes)
  1 changesets found
  list of changesets:
  99a7098854a3984a5c9eab0fc7a2906697b7cb5c
  bundle2-output-bundle: "HG20", 4 parts total
  bundle2-output-part: "replycaps" * bytes payload (glob)
  bundle2-output-part: "check:heads" streamed payload
  bundle2-output-part: "changegroup" (params: 1 mandatory) streamed payload
  bundle2-output-part: "phase-heads" 24 bytes payload
  bundle2-input-bundle: with-transaction
  bundle2-input-part: "replycaps" supported
  bundle2-input-part: total payload size * (glob)
  bundle2-input-part: "check:heads" supported
  bundle2-input-part: total payload size 20
  bundle2-input-part: "changegroup" (params: 1 mandatory) supported
  adding changesets
  add changeset 99a7098854a3
  adding manifests
  adding file changes
  adding a revisions
  calling hook pretxnchangegroup.lfs: hgext.lfs.checkrequireslfs
  bundle2-input-part: total payload size 617
  bundle2-input-part: "phase-heads" supported
  bundle2-input-part: total payload size 24
  bundle2-input-bundle: 4 parts total
  updating the branch cache
  added 1 changesets with 1 changes to 1 files
  bundle2-output-bundle: "HG20", 1 parts total
  bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
  bundle2-input-bundle: no-transaction
  bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
  bundle2-input-bundle: 1 parts total
  listing keys for "phases"
  $ mv .hg/store/lfs_ .hg/store/lfs

Clear the cache to force a download
  $ rm -rf `hg config lfs.usercache`
  $ cd ../repo2
  $ hg update tip --debug
  http auth: user foo, password ***
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: 000000000000, local: 000000000000+, remote: 99a7098854a3
  http auth: user foo, password ***
  Status: 200
  Content-Length: 311 (git-server !)
  Content-Length: 352 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (glob)
          }
        }
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: downloading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
  Status: 200
  Content-Length: 12
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b to the usercache
  lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
  lfs: downloaded 1 files (12 bytes)
   a: remote created -> g
  getting a
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

When the server has some blobs already.  `hg serve` doesn't offer to upload
blobs that it already knows about.  Note that lfs-test-server is simply
toggling the action to 'download'.  The Batch API spec says it should omit the
actions property completely.

  $ hg mv a b
  $ echo ANOTHER-LARGE-FILE > c
  $ echo ANOTHER-LARGE-FILE2 > d
  $ hg commit -m b-and-c -A b c d
  $ hg push ../repo1 --debug
  http auth: user foo, password ***
  pushing to ../repo1
  http auth: user foo, password ***
  http auth: user foo, password ***
  query 1; heads
  searching for changes
  all remote heads known locally
  listing keys for "phases"
  checking for updated bookmarks
  listing keys for "bookmarks"
  listing keys for "bookmarks"
  lfs: computing set of blobs to upload
  Status: 200
  Content-Length: 901 (git-server !)
  Content-Length: 755 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": { (git-server !)
          "download": { (git-server !)
            "expires_at": "$ISO_8601_DATE_TIME$" (git-server !)
            "header": { (git-server !)
              "Accept": "application/vnd.git-lfs" (git-server !)
            } (git-server !)
            "href": "http://localhost:$HGPORT/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (git-server !)
          } (git-server !)
        } (git-server !)
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
      {
        "actions": {
          "upload": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19" (glob)
          }
        }
        "oid": "37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19"
        "size": 20
      }
      {
        "actions": {
          "upload": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (glob)
          }
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: need to transfer 2 objects (39 bytes)
  lfs: uploading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
  Status: 200 (git-server !)
  Status: 201 (hg-server !)
  Content-Length: 0
  Content-Type: text/plain; charset=utf-8
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
  lfs: uploading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
  Status: 200 (git-server !)
  Status: 201 (hg-server !)
  Content-Length: 0
  Content-Type: text/plain; charset=utf-8
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  lfs: uploaded 2 files (39 bytes)
  1 changesets found
  list of changesets:
  dfca2c9e2ef24996aa61ba2abd99277d884b3d63
  bundle2-output-bundle: "HG20", 5 parts total
  bundle2-output-part: "replycaps" * bytes payload (glob)
  bundle2-output-part: "check:phases" 24 bytes payload
  bundle2-output-part: "check:updated-heads" streamed payload
  bundle2-output-part: "changegroup" (params: 1 mandatory) streamed payload
  bundle2-output-part: "phase-heads" 24 bytes payload
  bundle2-input-bundle: with-transaction
  bundle2-input-part: "replycaps" supported
  bundle2-input-part: total payload size * (glob)
  bundle2-input-part: "check:phases" supported
  bundle2-input-part: total payload size 24
  bundle2-input-part: "check:updated-heads" supported
  bundle2-input-part: total payload size 20
  bundle2-input-part: "changegroup" (params: 1 mandatory) supported
  adding changesets
  add changeset dfca2c9e2ef2
  adding manifests
  adding file changes
  adding b revisions
  adding c revisions
  adding d revisions
  bundle2-input-part: total payload size 1315
  bundle2-input-part: "phase-heads" supported
  bundle2-input-part: total payload size 24
  bundle2-input-bundle: 5 parts total
  updating the branch cache
  added 1 changesets with 3 changes to 3 files
  bundle2-output-bundle: "HG20", 1 parts total
  bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
  bundle2-input-bundle: no-transaction
  bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
  bundle2-input-bundle: 1 parts total
  listing keys for "phases"

Clear the cache to force a download
  $ rm -rf `hg config lfs.usercache`
  $ hg --repo ../repo1 update tip --debug
  http auth: user foo, password ***
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: 99a7098854a3, local: 99a7098854a3+, remote: dfca2c9e2ef2
  http auth: user foo, password ***
  Status: 200
  Content-Length: 608 (git-server !)
  Content-Length: 670 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19" (glob)
          }
        }
        "oid": "37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19"
        "size": 20
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (glob)
          }
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: need to transfer 2 objects (39 bytes)
  lfs: downloading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
  Status: 200
  Content-Length: 20
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 to the usercache
  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
  lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
  Status: 200
  Content-Length: 19
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 to the usercache
  lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  lfs: downloaded 2 files (39 bytes)
   b: remote created -> g
  getting b
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
   c: remote created -> g
  getting c
  lfs: found d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 in the local lfs store
   d: remote created -> g
  getting d
  lfs: found 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 in the local lfs store
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

Test a corrupt file download, but clear the cache first to force a download.
`hg serve` indicates a corrupt file without transferring it, unlike
lfs-test-server.

  $ rm -rf `hg config lfs.usercache`
#if git-server
  $ cp $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 blob
  $ echo 'damage' > $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
#else
  $ cp $TESTTMP/server/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 blob
  $ echo 'damage' > $TESTTMP/server/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
#endif
  $ rm ../repo1/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  $ rm ../repo1/*

TODO: give the proper error indication from `hg serve`

TODO: reconsider the except base class so that the git and hg errors yield the
same exit status.

  $ hg --repo ../repo1 update -C tip --debug --config ui.detailed-exit-code=False
  http auth: user foo, password ***
  resolving manifests
   branchmerge: False, force: True, partial: False
   ancestor: dfca2c9e2ef2+, local: dfca2c9e2ef2+, remote: dfca2c9e2ef2
  http auth: user foo, password ***
  Status: 200
  Content-Length: 311 (git-server !)
  Content-Length: 183 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": { (git-server !)
          "download": { (git-server !)
            "expires_at": "$ISO_8601_DATE_TIME$" (git-server !)
            "header": { (git-server !)
              "Accept": "application/vnd.git-lfs" (git-server !)
            } (git-server !)
            "href": "http://localhost:$HGPORT/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (git-server !)
          } (git-server !)
        "error": { (hg-server !)
          "code": 422 (hg-server !)
          "message": "The object is corrupt" (hg-server !)
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes) (git-server !)
  Status: 200 (git-server !)
  Content-Length: 7 (git-server !)
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Date: $HTTP_DATE$ (git-server !)
  abort: corrupt remote lfs object: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (git-server !)
  abort: LFS server error for "c": Validation error (hg-server !)
  [255]

The corrupted blob is not added to the usercache or local store

  $ test -f ../repo1/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  [1]
  $ test -f `hg config lfs.usercache`/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  [1]
#if git-server
  $ cp blob $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
#else
  $ cp blob $TESTTMP/server/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
#endif

Test a corrupted file upload

  $ echo 'another lfs blob' > b
  $ hg ci -m 'another blob'
  $ echo 'damage' > .hg/store/lfs/objects/e6/59058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0
  $ hg push --debug ../repo1
  http auth: user foo, password ***
  pushing to ../repo1
  http auth: user foo, password ***
  http auth: user foo, password ***
  query 1; heads
  searching for changes
  all remote heads known locally
  listing keys for "phases"
  checking for updated bookmarks
  listing keys for "bookmarks"
  listing keys for "bookmarks"
  lfs: computing set of blobs to upload
  Status: 200
  Content-Length: 309 (git-server !)
  Content-Length: 350 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "upload": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0" (glob)
          }
        }
        "oid": "e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0"
        "size": 17
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: uploading e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0 (17 bytes)
  abort: detected corrupt lfs object: e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0
  (run hg verify)
  [255]

Archive will prefetch blobs in a group

  $ rm -rf .hg/store/lfs `hg config lfs.usercache`
  $ hg archive --debug -r 1 ../archive
  http auth: user foo, password ***
  http auth: user foo, password ***
  Status: 200
  Content-Length: 905 (git-server !)
  Content-Length: 988 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (glob)
          }
        }
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19" (glob)
          }
        }
        "oid": "37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19"
        "size": 20
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (glob)
          }
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: need to transfer 3 objects (51 bytes)
  lfs: downloading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
  Status: 200
  Content-Length: 12
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b to the usercache
  lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
  lfs: downloading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
  Status: 200
  Content-Length: 20
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 to the usercache
  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
  lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
  Status: 200
  Content-Length: 19
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 to the usercache
  lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  lfs: downloaded 3 files (51 bytes)
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  lfs: found d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 in the local lfs store
  lfs: found 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 in the local lfs store
  $ find ../archive | sort
  ../archive
  ../archive/.hg_archival.txt
  ../archive/a
  ../archive/b
  ../archive/c
  ../archive/d

Cat will prefetch blobs in a group

  $ rm -rf .hg/store/lfs `hg config lfs.usercache`
  $ hg cat --debug -r 1 a b c nonexistent
  http auth: user foo, password ***
  http auth: user foo, password ***
  Status: 200
  Content-Length: 608 (git-server !)
  Content-Length: 670 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (glob)
          }
        }
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (glob)
          }
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: need to transfer 2 objects (31 bytes)
  lfs: downloading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
  Status: 200
  Content-Length: 12
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b to the usercache
  lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
  lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
  Status: 200
  Content-Length: 19
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 to the usercache
  lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  lfs: downloaded 2 files (31 bytes)
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  THIS-IS-LFS
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  THIS-IS-LFS
  lfs: found d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 in the local lfs store
  ANOTHER-LARGE-FILE
  nonexistent: no such file in rev dfca2c9e2ef2

Revert will prefetch blobs in a group

  $ rm -rf .hg/store/lfs
  $ rm -rf `hg config lfs.usercache`
  $ rm *
  $ hg revert --all -r 1 --debug
  http auth: user foo, password ***
  http auth: user foo, password ***
  Status: 200
  Content-Length: 905 (git-server !)
  Content-Length: 988 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b" (glob)
          }
        }
        "oid": "31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b"
        "size": 12
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19" (glob)
          }
        }
        "oid": "37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19"
        "size": 20
      }
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/*/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998" (glob)
          }
        }
        "oid": "d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998"
        "size": 19
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  lfs: need to transfer 3 objects (51 bytes)
  lfs: downloading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
  Status: 200
  Content-Length: 12
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b to the usercache
  lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
  lfs: downloading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
  Status: 200
  Content-Length: 20
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 to the usercache
  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
  lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
  Status: 200
  Content-Length: 19
  Content-Type: text/plain; charset=utf-8 (git-server !)
  Content-Type: application/octet-stream (hg-server !)
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  lfs: adding d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 to the usercache
  lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
  lfs: downloaded 3 files (51 bytes)
  reverting b
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
  reverting c
  lfs: found d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 in the local lfs store
  reverting d
  lfs: found 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 in the local lfs store
  adding a
  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store

Check error message when the remote missed a blob:

  $ echo FFFFF > b
  $ hg commit -m b -A b
  $ echo FFFFF >> b
  $ hg commit -m b b
  $ rm -rf .hg/store/lfs
  $ rm -rf `hg config lfs.usercache`
  $ hg update -C '.^' --debug
  http auth: user foo, password ***
  resolving manifests
   branchmerge: False, force: True, partial: False
   ancestor: 62fdbaf221c6+, local: 62fdbaf221c6+, remote: ef0564edf47e
  http auth: user foo, password ***
  Status: 200
  Content-Length: 308 (git-server !)
  Content-Length: 186 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": { (git-server !)
          "upload": { (git-server !)
            "expires_at": "$ISO_8601_DATE_TIME$" (git-server !)
            "header": { (git-server !)
              "Accept": "application/vnd.git-lfs" (git-server !)
            } (git-server !)
            "href": "http://localhost:$HGPORT/objects/8e6ea5f6c066b44a0efa43bcce86aea73f17e6e23f0663df0251e7524e140a13" (git-server !)
          } (git-server !)
        "error": { (hg-server !)
          "code": 404 (hg-server !)
          "message": "The object does not exist" (hg-server !)
        }
        "oid": "8e6ea5f6c066b44a0efa43bcce86aea73f17e6e23f0663df0251e7524e140a13"
        "size": 6
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  abort: LFS server error for "b": The object does not exist
  [50]

Check error message when object does not exist:

  $ cd $TESTTMP
  $ hg init test && cd test
  $ echo "[extensions]" >> .hg/hgrc
  $ echo "lfs=" >> .hg/hgrc
  $ echo "[lfs]" >> .hg/hgrc
  $ echo "threshold=1" >> .hg/hgrc
  $ echo a > a
  $ hg add a
  $ hg commit -m 'test'
  $ echo aaaaa > a
  $ hg commit -m 'largefile'
  $ hg debugdata a 1 # verify this is no the file content but includes "oid", the LFS "pointer".
  version https://git-lfs.github.com/spec/v1
  oid sha256:bdc26931acfb734b142a8d675f205becf27560dc461f501822de13274fe6fc8a
  size 6
  x-is-binary 0
  $ cd ..
  $ rm -rf `hg config lfs.usercache`

(Restart the server in a different location so it no longer has the content)

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

#if hg-server
  $ cat $TESTTMP/access.log $TESTTMP/errors.log
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "PUT /.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b HTTP/1.1" 201 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "PUT /.hg/lfs/objects/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 HTTP/1.1" 201 - (glob)
  $LOCALIP - - [$LOGDATE$] "PUT /.hg/lfs/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 HTTP/1.1" 201 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
#endif

  $ mkdir $TESTTMP/lfs-server2
  $ cd $TESTTMP/lfs-server2
#if no-windows git-server
  $ lfs-test-server &> lfs-server.log &
  $ echo $! >> $DAEMON_PIDS
#endif

#if windows git-server
  $ "$PYTHON" $TESTTMP/spawn.py >> $DAEMON_PIDS
#endif

#if hg-server
  $ hg init server2
  $ hg --config "lfs.usercache=$TESTTMP/servercache2" -R server2 serve -d \
  >    -p $HGPORT --pid-file=hg.pid -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS
#endif

  $ cd $TESTTMP
  $ hg --debug clone test test2
  http auth: user foo, password ***
  linked 6 files
  http auth: user foo, password ***
  updating to branch default
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: 000000000000, local: 000000000000+, remote: d2a338f184a8
  http auth: user foo, password ***
  Status: 200
  Content-Length: 308 (git-server !)
  Content-Length: 186 (hg-server !)
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value (hg-server !)
  {
    "objects": [
      {
        "actions": { (git-server !)
          "upload": { (git-server !)
            "expires_at": "$ISO_8601_DATE_TIME$" (git-server !)
            "header": { (git-server !)
              "Accept": "application/vnd.git-lfs" (git-server !)
            } (git-server !)
            "href": "http://localhost:$HGPORT/objects/bdc26931acfb734b142a8d675f205becf27560dc461f501822de13274fe6fc8a" (git-server !)
          } (git-server !)
        "error": { (hg-server !)
          "code": 404 (hg-server !)
          "message": "The object does not exist" (hg-server !)
        }
        "oid": "bdc26931acfb734b142a8d675f205becf27560dc461f501822de13274fe6fc8a"
        "size": 6
      }
    ]
    "transfer": "basic" (hg-server !)
  }
  abort: LFS server error for "a": The object does not exist
  [50]

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS