| 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:::: |
| 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. |
| Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for |
| further details. |
| |
| SEE ALSO |
| -------- |
| `mkfs.btrfs`(8), |
| `btrfs-device`(8), |
