Comments on: Home Fileserver: ZFS boot pool recovery http://breden.org.uk/2009/08/30/home-fileserver-zfs-boot-pool-recovery/ Complexifying simplicity Thu, 29 Jul 2010 12:25:04 +0000 http://wordpress.org/?v=2.8.4 hourly 1 By: Anonymous http://breden.org.uk/2009/08/30/home-fileserver-zfs-boot-pool-recovery/comment-page-1/#comment-16832 Anonymous Sat, 24 Oct 2009 10:32:42 +0000 http://breden.org.uk/?p=139#comment-16832 Just wanted to point out that instead of reinstalling, then recovering over the top of the new rpool, you can prepare the root disk using the livecd and restore directly. I assume the whole disk being prepared will be allocated to the rpool. * It may be necessary to remove traces of the existing rpool. I found that 'zpool import' was discovering phantom rpools. To get around this, I created a new pool from the vdevs 'zpool import' claimed were members of these phantom rpools, then destroyed the newly created pool. * Partition the disk. Restore the partition table from backup, if you have it. Otherwise, use format/fdisk to create a whole-disk Solaris partition. Make sure the partition table is type SMI, not EFI, for the boot disk (format -e). Make sure this partition is active. * Use format/partition to setup the slices. Make sure the first slice (0) is set to type "root" and starts at cylinder 1, to the maximum cylinder. Slice 2 (whole-disk) and 8 (boot) should already exist by default. * Create a new rpool with zpool, as per your instructions. * Restore zfs backup stream, as per your instructions. * Set the pool root, as per your instructions. * Reinstall grub, as per your instructions. * Update the boot archive (may not be necessary): zfs set mountpoint=/tmp/a rpool/ROOT/opensolaris mkdir /tmp/a zfs mount rpool/ROOT/opensolaris bootadm image-update -R /tmp/a umount /tmp/a zfs set mountpoint=/ rpool/ROOT/opensolaris Just wanted to point out that instead of reinstalling, then recovering over the top of the new rpool, you can prepare the root disk using the livecd and restore directly. I assume the whole disk being prepared will be allocated to the rpool.

* It may be necessary to remove traces of the existing rpool. I found that ‘zpool import’ was discovering phantom rpools. To get around this, I created a new pool from the vdevs ‘zpool import’ claimed were members of these phantom rpools, then destroyed the newly created pool.

* Partition the disk. Restore the partition table from backup, if you have it. Otherwise, use format/fdisk to create a whole-disk Solaris partition. Make sure the partition table is type SMI, not EFI, for the boot disk (format -e). Make sure this partition is active.

* Use format/partition to setup the slices. Make sure the first slice (0) is set to type “root” and starts at cylinder 1, to the maximum cylinder. Slice 2 (whole-disk) and 8 (boot) should already exist by default.

* Create a new rpool with zpool, as per your instructions.

* Restore zfs backup stream, as per your instructions.

* Set the pool root, as per your instructions.

* Reinstall grub, as per your instructions.

* Update the boot archive (may not be necessary):
zfs set mountpoint=/tmp/a rpool/ROOT/opensolaris
mkdir /tmp/a
zfs mount rpool/ROOT/opensolaris
bootadm image-update -R /tmp/a
umount /tmp/a
zfs set mountpoint=/ rpool/ROOT/opensolaris

]]> By: Simon http://breden.org.uk/2009/08/30/home-fileserver-zfs-boot-pool-recovery/comment-page-1/#comment-15951 Simon Wed, 16 Sep 2009 10:50:57 +0000 http://breden.org.uk/?p=139#comment-15951 Good question. Never tried it but it should be possible to 'zfs send' your root pool to a file, as shown above, and then copy the resulting file to the Windows machine. Good question. Never tried it but it should be possible to ‘zfs send’ your root pool to a file, as shown above, and then copy the resulting file to the Windows machine.

]]> By: chojin http://breden.org.uk/2009/08/30/home-fileserver-zfs-boot-pool-recovery/comment-page-1/#comment-15810 chojin Mon, 14 Sep 2009 13:46:30 +0000 http://breden.org.uk/?p=139#comment-15810 can i use a windows machine for backing up my rootpool? can i use a windows machine for backing up my rootpool?

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