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Replies:
3
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Last Post:
Jun 9, 2009 9:59 AM
by: row
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Posts:
5
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6/16/08
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Is it possible to move root FSs from rpool to another pool?
Posted:
Jun 16, 2008 4:24 AM
To: Projects » indiana » discuss
Cc: OpenSolaris » help
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I've attached another (whole not slice) disk to rpool after installation to mirror the original primary one, but it get EFI label witch I guess was wrong from me. After hard reset caused by power outage I got cycling reboots with zfs_page_fault panic.
Then I booted from liveCD and I messed up my rpool (when swapping physically HDDs) and ended with just the disk with EFI label in rpool. I was unable to attach the original primary disk to mirror the data back, because even both HDDs are same the layout was different (EFI label vs. Partition0 100% of HDD type Solaris2). The nonEFI disk had at least swap partition still defined and I've been attaching just slice 0.
1. Then I created zpool named bootpool from slice 0 of original installation rpool disk leaving the orignal partition(solraris2) and VTOC.
2. I replicated all rpool filesets to bootpool using zfs send and zfs receive pipe
3. modified bootpool/boot/grub/menu.lst bootfs entry to point it to bootpool/ROOT/opensolaris
4. set bootpool/ROOT/opensolaris as legacy mountpoint and tried to mount it, all other original FSs are mounted OK to non-legacy mountpoint under /bootpool/...
With this I can load kernel and boot archive manualy from grub or using the modified menu entry start the boot process, but system panics in early phase with:
cannot mount root on /ramdisk:a
I tried to
1. removed /mnt/etc/zfs/zpool.cache
2. bootadm update-archive -R /mnt when booted from liveCD and had bootpool/ROOT/opensolaris mounted on /mnt
3. verified there is no zpool.cache file in boot archive
but still a get panic on:
cannot mount root on /ramdisk:a
This behavior is similar to the situation when booted liveCD you mount the boot zpool (rpool) and export it after umount, but I never exported bootpool.
Any idea what to set/check?
Is here a way how to fix this installation somehow?
Thanks&Regards
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Posts:
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6/16/08
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Re: Is it possible to move root FSs from rpool to another pool?
Posted:
Jun 23, 2008 1:47 PM
in response to: row
To: Projects » indiana » discuss
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The problem was non-existing /etc/zfs/zpool.cache file on the rootFS and in the boot-archive (removed as recovery procedure seen on ZFS admin guide). I've recreated it using step #2 "2. Export the root pool you just created" posted here: http://mail.opensolaris.org/pipermail/zfs-discuss/2007-July/041609.html
The only difference was I need to copy/save the created/modified zpool.cache before umounting /tmp/root.
I believe I could use /etc/zfs/zpool.cache from liveCD root (ramdisk) same way too.
Than I mounted bootpool/ROOT/opensolaris to /tmp/mnt.
copied saved zpool.cache to /tmp/mnt/etc/zfs/
and run
bootadm update-archive -v -R /tmp/mnt
System boots fine now.
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Re: Is it possible to move root FSs from rpool to another pool?
Posted:
Jun 2, 2009 11:43 PM
in response to: row
To: Projects » indiana » discuss
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Complete description of the migration process can be found on the blog: http://blogs.sun.com/arrowaver from date Jun 2nd 2009.
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Posts:
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