git/list[1] front-page[2] threads[3] people[4] search[5] about
 

Bizarre git merge behaviour

From
Matthew Cengia <mattcen@gmail.com>
Date
Nov 20, 2013, 03:49 UTC
Message-ID
<l6hbgg$oej$1@ger.gmane.org>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

The other day I was merging a feature branch (shown below as origin/22869-new-kernel) into my staging release (shown below as 'wtf'), and it *reverted* a bucket-load of changes I'd made on other branches which had been merged into staging before. I can't for the life of me work out why this happened, and would appreciate any ideas. Output below shows symptoms:

  mattcen@sonar:prisonpc(wtf)$ git log --numstat --oneline origin/22869-new-kernel ^wtf | cat
  a8879c2 Oops, name .config consistently with deb.
  2797    0       client/kernel/config-3.5.7.20-1
  0       2797    client/kernel/config-3.5.7.21-1
  4c34686 Further lock down the inmate kernel.
  366     1094    client/kernel/config-3.5.7.21-1
  -       -       client/kernel/linux-firmware-image_3.5.7.21-1_i386.deb
  -       -       client/kernel/linux-image-3.5.7.20_3.5.7.20-1_i386.deb
  -       -       client/kernel/linux-image-3.5.7.21_3.5.7.21-1_i386.deb
  6       7       client/scm/50-kernel-prisoner.scm
  4a8acd0 Add build notes about how we generated these kernels.
  37      0       client/kernel/README
  e96adfe Merge remote-tracking branch 'origin/NNNNN-multicast-kernel' into 22869-new-kernel
  4b8afeb Merge commit '8ef01f2' into 22869-new-kernel
  fc4a5e6 Allow staff machines to receive IPTV stuff (per russm).
  1       0       client/scm/50-staff.scm
  117e646 Merge remote branch 'origin/staging' into NNNNN-multicast-kernel
  deb3b38 allow IGMP reports out through iptables
  1       0       client/scm/20-security.scm
  8ef01f2 Enable multicast in inmate kernel.
  0       3034    client/kernel/config-2.6.32.46+drm33.20
  3036    0       client/kernel/config-2.6.32.61+drm33.26
  -       -       client/kernel/linux-firmware-image_2.6.32.46+drm33.20-1_all.deb
  -       -       client/kernel/linux-firmware-image_2.6.32.61+drm33.26-1_all.deb
  -       -       client/kernel/linux-image-2.6.32.46+drm33.20_2.6.32.46+drm33.20-1_i386.deb
  -       -       client/kernel/linux-image-2.6.32.61+drm33.26_2.6.32.61+drm33.26-1_i386.deb
  11      11      client/scm/50-prisoner.scm
  mattcen@sonar:prisonpc(wtf)$ git merge origin/22869-new-kernel
  Auto-merging tca/parts.d/pxelinux-cfg
  Auto-merging pre-install.sh
  Removing ppcadm/templates/wwwfilter.tpl
  Removing ppcadm/templates/streaming_media.tpl
  Removing ppcadm/templates/disc_summary.tpl
  Removing ppcadm/templates/disc_access.tpl
  Auto-merging ppcadm/modules/quarantine.py
  CONFLICT (content): Merge conflict in ppcadm/modules/quarantine.py
  Auto-merging ppcadm/modules/media.py
  CONFLICT (content): Merge conflict in ppcadm/modules/media.py
  CONFLICT (modify/delete): ppcadm/modules/emailstats.py deleted in origin/22869-new-kernel and modified in HEAD. Version HEAD of ppcadm/modules/emailstats.py left in tree.
  Removing generate-mail-stats
  Removing doc/adminguide/images/streaming_media-screen.png
  Auto-merging debian/rules
  Auto-merging debian/prisonpc-internet.install
  CONFLICT (content): Merge conflict in debian/prisonpc-internet.install
  Auto-merging debian/prisonpc-core.cron.d
  Auto-merging debian/NEWS
  CONFLICT (content): Merge conflict in debian/NEWS
  Auto-merging client/scm/50-kernel-prisoner.scm
  CONFLICT (content): Merge conflict in client/scm/50-kernel-prisoner.scm
  Removing client/kernel/linux-image-3.5.7.21_3.5.7.21-1_i386.deb
  Removing client/kernel/linux-firmware-image_3.5.7.21-1_i386.deb
  Auto-merging client/kernel/config-3.5.7.20-1
  Resolved 'client/scm/50-kernel-prisoner.scm' using previous resolution.
  Resolved 'debian/NEWS' using previous resolution.
  Resolved 'debian/prisonpc-internet.install' using previous resolution.
  Resolved 'ppcadm/modules/media.py' using previous resolution.
  Resolved 'ppcadm/modules/quarantine.py' using previous resolution.
  Automatic merge failed; fix conflicts and then commit the result.
  mattcen@sonar:prisonpc(wtf)$ git status --porcelain
  M  client/kernel/README
  R  client/kernel/config-3.5.7.21-1 -> client/kernel/config-3.5.7.20-1
  D  client/kernel/linux-firmware-image_3.5.7.21-1_i386.deb
  A  client/kernel/linux-image-3.5.7.20_3.5.7.20-1_i386.deb
  D  client/kernel/linux-image-3.5.7.21_3.5.7.21-1_i386.deb
  M  client/scm/20-security.scm
  M  client/scm/30-apps.scm
  UU client/scm/50-kernel-prisoner.scm
  M  client/scm/50-staff.scm
  UU debian/NEWS
  M  debian/changelog
  M  debian/prisonpc-core.cron.d
  UU debian/prisonpc-internet.install
  M  debian/rules
  A  doc/adminguide/images/streaming_media-screen.jpg
  D  doc/adminguide/images/streaming_media-screen.png
  M  doc/adminguide/images/web_filtering.png
  M  doc/adminguide/streaming_media.rst
  M  doc/adminguide/system-status.rst
  M  doc/adminguide/web_filtering.rst
  M  dovecot/dovecot-staff.conf
  M  eric/apps/complain.py
  M  eric/apps/links.py
  M  eric/apps/media.py
  M  eric/apps/whitelist.py
  M  eric/eric
  M  eric/eric_cfg.py
  D  generate-mail-stats
  M  ppcadm/modules/disc_access.py
  UD ppcadm/modules/emailstats.py
  UU ppcadm/modules/media.py
  UU ppcadm/modules/quarantine.py
  M  ppcadm/modules/wwwfilter.py
  M  ppcadm/resources/admin.css
  D  ppcadm/templates/disc_access.tpl
  D  ppcadm/templates/disc_summary.tpl
  M  ppcadm/templates/home.tpl
  D  ppcadm/templates/streaming_media.tpl
  M  ppcadm/templates/user.tpl
  D  ppcadm/templates/wwwfilter.tpl
  M  pre-install.sh
  M  tca/parts.d/pxelinux-cfg
  ?? old/
  ?? paste
  mattcen@sonar:prisonpc(wtf)$
- -- 
Regards,
Matthew Cengia
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)

iQJ8BAEBCgBmBQJSjDFAXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQwMjI1MjY2QUFCMThBOUQwNEMxOUQ0QjY3 QTdFMzdGMzNCMjI3MkU4AAoJEHp+N/M7InLoJ5UP/0Ws9afdJjQ7h7qP/EQuOOcq zB/caURaNJbrqioZ/leaLTPKEeSLLL0p27Rooa+dt20qQU4Iq8I5K8tDPau5dh9z L6AnX1i5nS6Qikz6xqgBpfnnm8MYy/Bi9iW1o8k3lZrNuoVnmrqav/JxrygQLRFv HEtB5nGAOdsONtlFnGd7QrErf6d+bU5yCE1bN2CDwGYwghl/ApvCIMk16iRiguDA XmMGl3Y7agQHCOiy8ghCnDwq125BBKpIhLbV485YTTM+4SvbSAwfAWy9ja3KGYO/ hmQeKmKTs3jgJhlV8qNFPCBVbuX6GgQCZeafd0aCK/taJY7AtFcn0aPQL7/d8cSc 5mE0g7Cs2BAUEiN+whYaQbUPjLs5WX8ACqSpQY1eC+dQFVJcr5enQ65bsNqy0TXb vMmYzT5XHiMnkusdU3gC7D8yhOO0V4JYvPp+o7BEVqAKpwP4tuC3F8shsKXnIK1y m4aQDmQAVPBcC33FtgZNLlGR7XO5OC47xKfuCmBgxLhyiYb979HUZKm3vktKsDra ghp6I/TV7i4kkETb9/h5U4mIoTXEtdA1fyvverE+6s4gMx6C+vn10GbB2z898cuT 7OXYMONkcR+r8XtXm0/h5d64Zn82Xk/x52a/eHD6PgAvsfM3RwMiWAVVAKeRxrD9 IvjRBri6se6aBkdL+z9v =sMCO -----END PGP SIGNATURE-----

Next: Johannes Sixt
Message 1 of 7 in “Bizarre git merge behaviour”
  1. Matthew CengiaNov 20, 2013
  2. Johannes SixtNov 20, 2013
  3. Matthew CengiaNov 20, 2013
  4. Johannes SixtNov 20, 2013
  5. Matthew CengiaNov 20, 2013
  6. Matthew CengiaNov 21, 2013
  7. Jakub NarębskiNov 20, 2013

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.