BTRFS-ZERO-LOG(8)                Btrfs Manual                BTRFS-ZERO-LOG(8)

NAME
       btrfs-zero-log - clear out log tree

SYNOPSIS
       btrfs-zero-log <dev>

DESCRIPTION
       btrfs-zero-log will remove the log tree if log tree is corrupt, which
       will allow you to mount the filesystem again.

       The common case where this happens has been fixed a long time ago, so
       it is unlikely that you will see this particular problem.

       One can determine whether btrfs-zero-log is needed according to the
       kernel backtrace:

           ? replay_one_dir_item+0xb5/0xb5 [btrfs]
           ? walk_log_tree+0x9c/0x19d [btrfs]
           ? btrfs_read_fs_root_no_radix+0x169/0x1a1 [btrfs]
           ? btrfs_recover_log_trees+0x195/0x29c [btrfs]
           ? replay_one_dir_item+0xb5/0xb5 [btrfs]
           ? btree_read_extent_buffer_pages+0x76/0xbc [btrfs]
           ? open_ctree+0xff6/0x132c [btrfs]

       If the errors are like above, then btrfs-zero-log should be used to
       clear the log and the filesystem may be mounted normally again.

           Note
           If you use btrfs as the root filesystem, you may want to include
           btrfs-zero-log into initramdisk if the log problems hits you often.

EXIT STATUS
       btrfs-zero-log will return 0 if no error happened. Other exit code
       means some problems happened.

SEE ALSO
       mkfs.btrfs(8)

Btrfs v3.17                       11/22/2014                 BTRFS-ZERO-LOG(8)

Czas wygenerowania: 0.00040 sek.

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