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author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2014-04-02 16:29:25 +0800 |
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committer | David Sterba <dsterba@suse.cz> | 2014-04-22 14:15:22 +0200 |
commit | bc341bbd16b14ab95f94751c87e5e7fbedd56134 (patch) | |
tree | 9a88264c75e4a2b33733dc76510a33c531d0a6e8 /Documentation/btrfs-replace.txt | |
parent | 05c6d72830d3b08f1803e205a13c310f689ae801 (diff) |
btrfs-progs: Convert man page for btrfs-replace.
Convert man page for btrfs-replace.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'Documentation/btrfs-replace.txt')
-rw-r--r-- | Documentation/btrfs-replace.txt | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/Documentation/btrfs-replace.txt b/Documentation/btrfs-replace.txt new file mode 100644 index 00000000..8c5dcc4f --- /dev/null +++ b/Documentation/btrfs-replace.txt @@ -0,0 +1,76 @@ +btrfs-replace(8) +=============== + +NAME +---- +btrfs-replace - replace devices managed by btrfs with other device. + +SYNOPSIS +-------- +'btrfs replace' <subcommand> <args> + +DESCRIPTION +----------- +'btrfs replace' is used to replace btrfs managed devices with other device. + +SUBCOMMAND +---------- +'start' [-Bfr] <srcdev>|<devid> <targetdev> <path>:: +Replace device of a btrfs filesystem. ++ +On a live filesystem, duplicate the data to the target device which +is currently stored on the source device. +If the source device is not available anymore, or if the -r option is set, +the data is built only using the RAID redundancy mechanisms. +After completion of the operation, the source device is removed from the +filesystem. +If the <srcdev> is a numerical value, it is assumed to be the device id +of the filesystem which is mounted at <path>, otherwise is is +the path to the source device. If the source device is disconnected, +from the system, you have to use the devid parameter format. +The <targetdev> needs to be same size or larger than the <srcdev>. ++ +`Options` ++ +-r:::: +only read from <srcdev> if no other zero-defect mirror exists. +(enable this if your drive has lots of read errors, the access would be very +slow) +-f:::: +force using and overwriting <targetdev> even if it looks like +containing a valid btrfs filesystem. ++ +A valid filesystem is assumed if a btrfs superblock is found which contains a +correct checksum. Devices which are currently mounted are +never allowed to be used as the <targetdev>. +-B:::: +no background replace. + +'status' [-1] <mount_point>:: +Print status and progress information of a running device replace operation. ++ +`Options` ++ +-1:::: +print once instead of print continuously until the replace +operation finishes (or is canceled) + +'cancel' <mount_point>:: +Cancel a running device replace operation. + +EXIT STATUS +----------- +'btrfs replace' returns a zero exist status if it succeeds. Non zero is +returned in case of failure. + +AVAILABILITY +------------ +'btrfs' is part of btrfs-progs. Btrfs filesystem is currently under heavy +development, +and not suitable for any uses other than benchmarking and review. +Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for +further details. + +SEE ALSO +-------- +`mkfs.btrfs`(8), |