zroot won't mount after 9.0-RC2 -> 9.0-RELEASE upgrade
Joshua Isom
jrisom at gmail.com
Wed Feb 15 20:09:00 UTC 2012
On 2/15/2012 12:03 PM, George Kontostanos wrote:
> On Wed, Feb 15, 2012 at 7:48 PM, Daniel Shahaf<danielsh at apache.org> wrote:
>> So far we've tried:
>>
>> - 'gpart bootcode -b'
>> - load geom_part_gpt.ko
>> - using zpool.cache from the 9.0-RELEASE CD
>>
>> And none of that seems to have had any effect.
>>
>> Additional info: from the CD environment, 'zpool import' reports an old
>> 'tank' pool on devices mfid[2-5]. (The 'zroot' pool uses mfid[0-5]p3.)
>>
>> Any further ideas, please?
>>
>> Thanks for all the suggestions so far.
>
> You are running ZFS version 4 while the default is 5 on 9.0-RELEASE
>
> ---> Assuming your pool is called zroot
> --->This is the way to update your zpool.cache:<---
>
> Boot with 9.0-RELEASE and proceed with:
>
> #zpool import -o altroot=/mnt -o cachefile=/var/tmp/zpool.cache zroot
>
> #zfs set mountpoint=/mnt zroot
> #zfs set mountpoint=/mnt/usr zroot/usr
> #zfs set mountpoint=/mnt/var zroot/var
> #zfs set mountpoint=/mnt/tmp zroot/tmp
>
> ## Ignore any warnings##
>
> Now export the pool:
>
> #zpool export -f zroot
>
> Import the pool back and update the zpool.cache:
>
> #zpool import -o cachefile=/var/tmp/zpool.cache zroot
> #cp /var/tmp/zpool.cache /mnt/boot/zfs/zpool.cache
>
> Make sure that bootfs is set correctly:
>
> #zpool set bootfs=zroot zroot
>
> Now, unmount any ZFS datasets
>
> #zfs umount -af
>
> And fix mountpoints:
>
> #zfs set mountpoint=legacy zroot
> #zfs set mountpoint=/tmp zroot/tmp
> #zfs set mountpoint=/usr zroot/usr
> #zfs set mountpoint=/var zroot/var
>
> That should be enough to update your zpool.cache
>
> If this still doesn't work then you can upgrade your ZFS version to 5.
>
> Make sure you have backups first!!!
>
> Before unmounting your datasets issue a:
>
> zfs upgrade -a
>
I remember doing something similar. It took me a few hours to figure
everything out and repeated reboots to attempt to get it working. I
believe what worked for me wasn't mounting it in /mnt, but actually
mounting on / and making sure the cache file was in the zfs pool. I
think I had to make a copy because zfs wanted to export the pool before
shutdown which defeated the point. It was almost a year ago that I
dealt with it. I'm 90% sure it's a cache file issue, and it's just
getting it working properly.
Note: I've never had a problem when upgrading from /usr/src, it was only
when I was moving datasets to different drives, adding hard drives, and
redoing my hard drive arrangement.
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