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BTRFS-REPLACE(8) | Btrfs Manual | 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. Note: this is not currently supported for RAID5/6 profiles and must use the device add/delete workaround. It is recommended to see btrfs-device(8) for more details about btrfs device management.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
status [-1] <mount_point>
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.
Print status and progress information of a running device
replace operation.
Options
-1
cancel <mount_point>
print once instead of print continuously until the
replace operation finishes (or is canceled)
Cancel a running device replace operation.
EXIT STATUS¶
btrfs replace returns a zero exit status if it succeeds. Non zero is returned in case of failure.AVAILABILITY¶
btrfs is part of btrfs-progs. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details.SEE ALSO¶
mkfs.btrfs(8), btrfs-device(8),11/22/2014 | Btrfs v3.17 |