Red Hat Storage ボリュームでスプリットブレインからファイルを復元する

Issue

• gluster volume heal VOLNAME info split-brain は、スプリットブレインの影響を受けるファイルの一覧を挙げます。

• ボリュームのクライアントログは、スプリットブレインを示すメッセージが表示されます。

  [afr-common.c:1215:afr_detect_self_heal_by_lookup_status] 0-my-replicate-0: entries are missing in lookup of /path/to/file.
  [afr-common.c:1341:afr_launch_self_heal] 0-my-replicate-0: background  meta-data data entry missing-entry gfid self-heal triggered. path:/path/to/file, reason: lookup detected pending operations
  [afr-self-heal-common.c:1087:afr_sh_common_lookup_resp_handler] 0-my-replicate-0: path /path/to/file on subvolume my-client-0 => -1 (No such file or directory)
  [afr-self-heal-common.c:1087:afr_sh_common_lookup_resp_handler] 0-my-replicate-0: path /path/to/file on subvolume my-client-2 => -1 (No such file or directory)
  [afr-self-heal-data.c:769:afr_sh_data_fxattrop_fstat_done] 0-my-replicate-0:Unable to self-heal contents of '/path/to/file' (possible split-brain).Please delete the file from all but the preferred subvolume.
  [afr-self-heal-common.c:2156:afr_self_heal_completion_cbk] 0-my-replicate-0: background  meta-data data entry missing-entry gfid self-heal failed on /path/to/file
  

• ボリュームのクライアントログには、エントリの競合を示すメッセージが表示されます。

  [afr-self-heal-common.c:1317:afr_sh_common_lookup_cbk] 0-my-replicate-1:Conflicting entries for /path/to/file
  [afr-common.c:1462:afr_conflicting_iattrs] 0-my-replicate-1:/path/to/file: gfid differs on subvolume 1
  [afr-self-heal-common.c:1317:afr_sh_common_lookup_cbk] 0-my-replicate-1:Conflicting entries for /path/to/file
  [afr-self-heal-common.c:2069:afr_self_heal_completion_cbk] 0-my-replicate-1: background entry self-heal failed on /path/to
  [afr-common.c:1462:afr_conflicting_iattrs] 0-my-replicate-1:/path/to/file: gfid differs on subvolume 1
  [afr-common.c:1462:afr_conflicting_iattrs] 0-my-replicate-1:/path/to/file: gfid differs on subvolume 1
  [afr-common.c:1239:afr_detect_self_heal_by_iatt] 0-my-replicate-1:/path/to/file: gfid different on subvolume
  [afr-self-heal-common.c:1719:afr_sh_find_fresh_parents] 0-my-replicate-1:/path/to:Performing conservative merge
  [afr-common.c:1462:afr_conflicting_iattrs] 0-my-replicate-1:/path/to/file: gfid differs on subvolume 1
  [afr-self-heal-common.c:2069:afr_self_heal_completion_cbk] 0-my-replicate-1: background meta-data data missing-entry self-heal failed on /path/to/file
  

• 一部のエントリは、GFID に限定された参照となる場合があります。

[2013-10-29 00:43:11.375252] E [afr-self-heal-common.c:221:afr_sh_print_split_brain_log] 0-myvm-replicate-2:Unable to self-heal contents of '<gfid:d0ec7d7d-4f6c-4ac9-8304-4899294d7bcd>' (possible split-brain).Please delete the file from all but the preferred subvolume.- Pending matrix:[ [ 0 8170 ] [ 8172 0 ] ]