I have a couple of questions:
1.)
I am working with an v240 IMAP server that is currently set up with 3 zfs
pools, one (conf-pool) on the internal disks, and two (email-pool, and
email1-pool) that are spread across 12 disks in an attached JBOD like so:
pool: email-pool
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
email-pool ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t1d0 ONLINE 0 0 0
c0t9d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t2d0 ONLINE 0 0 0
c0t10d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t3d0 ONLINE 0 0 0
c0t11d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t4d0 ONLINE 0 0 0
c0t12d0 ONLINE 0 0 0
pool: email1-pool
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
email1-pool ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t5d0 ONLINE 0 0 0
c0t13d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t6d0 ONLINE 0 0 0
c0t14d0 ONLINE 0 0 0
We are planning on migrating everything over to email-pool eventually, but
for now that's what I'm working with.
I currently have a script that runs every night at midnight to create
full/normal snapshots of the various filesystems on the two pools so we can
do backups. The script also renames and deletes snapshots such that I
always have the last two week's worth of snapshots. Also, email-pool has
26 file systems (one per letter), and email1-pool has just 1.
So, normally, when the script runs, all snapshots finish in maybe a minute
total. However, on Sundays, it continues to take longer and longer. On
2/25 it took 30 minutes, and this last Sunday, it took 2:11. The only
thing special thing about Sunday's snapshots is that they are the first
ones created since the full backup (using NetBackup) on Saturday. All
other backups are incrementals.
I've tried scrubbing both pools, but that didn't help. So, any thoughts or
further questions on this one?
2.)
Possibly related to the above, I've found that my zfs tools have been
patched/upgraded, and now zpool status says I can/should upgrade. zpool
upgrade shows the following:
-bash-3.00$ zpool upgrade
This system is currently running ZFS version 3.
The following pools are out of date, and can be upgraded. After being
upgraded, these pools will no longer be accessible by older software
versions.
VER POOL
--- ------------
2 conf-pool
2 email-pool
2 email1-pool
I've looked a bit, and can't find anything that tells me if there will be
any sort of a hit on my performance if I upgrade the pools. I'm especially
cautious as this is our production email server. Will an upgrade cause
load/performance problems? Will I need to take down the IMAP server while
I do this? Also, the whole 'older software versions' mentioned above: what
is the older software I'd have to worry about? Just the ZFS tools? If the
array is staying on this server, do I even have to worry about this? I'm
running a patched 2006/06 OS.
--
Joe Barbey IT Services/Network Services
office: (715) 425-4357 Davee Library room 166C
cell: (715) 821-0008 UW - River Falls
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
