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Diffstat (limited to 'Documentation/btrfs-rescue.asciidoc')
| -rw-r--r-- | Documentation/btrfs-rescue.asciidoc | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/btrfs-rescue.asciidoc b/Documentation/btrfs-rescue.asciidoc index 42aca645..a9b471fe 100644 --- a/Documentation/btrfs-rescue.asciidoc +++ b/Documentation/btrfs-rescue.asciidoc @@ -42,19 +42,19 @@ verbose mode. *zero-log* <device>:: clear the filesystem log tree - ++ This command will clear the filesystem log tree. This may fix a specific set of problem when the filesystem mount fails due to the log replay. See below for sample stacktraces that may show up in system log. - ++ The common case where this happens has been fixed a long time ago, so it is unlikely that you will see this particular problem, but the utility is kept around. - ++ NOTE: clearing the log may lead to loss of changes that were made since the last transaction commit. This may be up to 30 seconds (default commit period) or less if the commit was implied by other filesystem activity. - ++ One can determine whether *zero-log* is needed according to the kernel backtrace: ---- @@ -66,7 +66,7 @@ backtrace: ? btree_read_extent_buffer_pages+0x76/0xbc [btrfs] ? open_ctree+0xff6/0x132c [btrfs] ---- - ++ If the errors are like above, then *zero-log* should be used to clear the log and the filesystem may be mounted normally again. The keywords to look for are 'open_ctree' which says that it's during mount and function names |