Hi all,
I need to replace a disk in a zfs pool on a production server (X4240
running Solaris 10) today and won't have access to my documentation
there. That's why I would like to have a good plan on paper before
driving to that location. :-)
The current tank pool looks as follows:
pool: tank
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t2d0 ONLINE 0 0 0
c1t3d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t5d0 ONLINE 0 0 0
c1t4d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t15d0 ONLINE 0 0 0
c1t7d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t8d0 ONLINE 0 0 0
c1t9d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t10d0 ONLINE 0 0 0
c1t11d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t12d0 ONLINE 0 0 0
c1t13d0 ONLINE 0 0 0
errors: No known data errors
Note that disk c1t15d0 is being used and has taken ove rthe duty of
c1t6d0. c1t6d0 failed and was replaced with a new disk a couple of
months ago. However, the new disk does not show up in /dev/rdsk and
/dev/dsk. I was told that the disk has to initialized first with the
SCSI BIOS. I am going to do so today (reboot the server). Once the
disks shows up in /dev/rdsk I am planning to do the following:
zpool attach tank c1t7d0 c1t6d0
This hopefully gives me a three-way mirror:
mirror ONLINE 0 0 0
c1t15d0 ONLINE 0 0 0
c1t7d0 ONLINE 0 0 0
c1t6d0 ONLINE 0 0 0
And then a
zpool dettach tank c1t15d0
to get c1t15d0 out of the mirror to finally have
mirror ONLINE 0 0 0
c1t6d0 ONLINE 0 0 0
c1t7d0 ONLINE 0 0 0
again. Is that a good plan? I am then intending to do
zpool add tank mirror c1t14d0 c1t15d0
to add another 146GB to the pool.
Please let me know if I am missing anything. This is a production
server. A failure of the pool would be fatal.
Thanks a lot,
Andreas
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