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| ZFS_PREPARE_DISK(8) | System Manager's Manual | ZFS_PREPARE_DISK(8) |
NAME¶
zfs_prepare_disk —
special script that gets run before bringing a disk into a
pool
DESCRIPTION¶
zfs_prepare_disk is an optional script
that gets called by libzfs before bringing a disk into a pool. It can be
modified by the user to run whatever commands are necessary to prepare a
disk for inclusion into the pool. For example, users can add lines to
zfs_prepare_disk to do things like update the
drive's firmware or check the drive's health.
zfs_prepare_disk is optional and can be removed if
not needed. libzfs will look for the script at
/usr/lib/zfs-linux/zfs_prepare_disk.
Properties¶
zfs_prepare_disk will be passed the
following environment variables:
POOL_NAME- Name of the pool
VDEV_PATH- Path to the disk (like /dev/sda)
VDEV_PREPARE- Reason why the disk is being prepared for inclusion ('create', 'add', 'replace', or 'autoreplace'). This can be useful if you only want the script to be run under certain actions.
VDEV_UPATH- Path to one of the
underlying devices for the disk. For multipath this would
return one of the /dev/sd* paths to the disk. If the device is not a
device mapper device, then
VDEV_UPATHjust returns the same value asVDEV_PATH VDEV_ENC_SYSFS_PATH- Path to the disk's enclosure sysfs path, if available
Note that some of these variables may have a blank value.
POOL_NAME is blank at pool creation time, for
example.
ENVIRONMENT¶
zfs_prepare_disk runs with a limited
$PATH.
EXIT STATUS¶
zfs_prepare_disk should return 0 on
success, non-zero otherwise. If non-zero is returned, the disk will not be
included in the pool.
| August 30, 2023 | OpenZFS |