> Today I attempted to upgrade to S10_U2 and migrate some mirrored UFS SVM
> partitions to ZFS.
>
> I used Live Upgrade to migrate from U1 to U2 and that went without a
> hitch on my SunBlade 2000. And the initial conversion of one side of the
> UFS mirrors to a ZFS pool and subsequent data migration went fine.
> However, when I attempted to attach the second side mirrors as a mirror
> of the ZFS pool, all hell broke loose.
>
> The system more or less became unresponsive after a few minutes. It
> appeared that ZFS had taken all available memory because I saw tons of
> errors on the console about failed memory allocations.
>
> Any thoughts/suggestions?
>
> The data I migrated consisted of about 80GB. Here's the general flow of
> what I did:
>
> 1. break the SVM mirrors
> metadetach d5 d51
> metadetach d6 d61
> metadetach d7 d71
> 2. remove the SVM mirrors
> metaclear d51
> metaclear d61
> metaclear d71
> 3. combine the partitions with format. They were contiguous
> partitions on s4, s5 & s6 of the disk, I just made a single
> partition on s4 and cleared s5 & s6.
> 4. create the pool
> zpool create storage cXtXdXs4
> 5. create three filesystems
> zfs create storage/app
> zfs create storage/work
> zfs create storage/extra
> 6. migrate the data
> cd /app; find . -depth -print | cpio -pdmv /storage/app
> cd /work; find . -depth -print | cpio -pdmv /storage/work
> cd /extra; find . -depth -print | cpio -pdmv /storage/extra
> 7. remove the other SVM mirrors
> umount /app; metaclear d5 d50
> umount /work; metaclear d6 d60
> umount /extra; metaclear d7 d70
before you went any further here did you issue a metastat command and also
did you have any metadb's on that other disk before you nuked those slices ?
just asking here
I am hoping that you did a metaclear d5 and then metaclear d50 in order to
clear out both the one sided mirror as well as its component.
I'm just fishing around here ..
> 8. combine the partitions with format. They were contiguous
> partitions on s4, s5 & s6 of the disk, I just made a single
> partition on s4 and cleared s5 & s6.
okay .. I hope that SVM was not looking for them. I guess you would get a
nasty stack of errors in that case.
> 9. attach the partition to the pool as a mirror
> zpool attach storage cXtXdXs4 cYtYdYs4
So you wanted a mirror ?
Like :
# zpool status
pool: storage
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
storage ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t0d0s4 ONLINE 0 0 0
c0t1d0s4 ONLINE 0 0 0
errors: No known data errors
that sort of deal ?
Dennis Clarke
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