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added note for fix when grub doesnt detect zfs devs correctly

Jonathan Burns 2018-01-01 11:31:13 +09:00 committed by Richard Laager
parent 5d6d5572a0
commit 93b91af860
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Ubuntu-16.04-Root-on-ZFS.md

@ -315,6 +315,17 @@ Install GRUB to the disk(s), not the partition(s).
# grub-probe /
zfs
**Note** GRUB uses zpool status in order to determine the location of zfs devs. Depending on the version of zfs & GRUB, you may experience a problem with grub-probe when performing the install under chroot, leading to an error similar to:
grub-probe: error: failed to get canonical path of `/dev/scsi-SATA_disk1-part1'.
The problem is GRUB expects zpool to return a path to a device directly in /dev, but in the case of this guide, the device is in /dev/disk/by-id. A quick fix is to tell zpool to export the full path of the VDEV, which GRUB is able to properly consume:
export ZPOOL_VDEV_NAME_PATH=YES
References:
https://github.com/zfsonlinux/grub/issues/5#issuecomment-325221448
https://askubuntu.com/questions/827126/zfs-grub-probe-error-failed-to-get-canonical-path-of-dev-disk-name/943425#943425
5.2 Refresh the initrd files:
# update-initramfs -c -k all