Hi Ragnar,
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:
I don't think that the BIOS and rebooting part ever has to be true,
at least I don't hope so. You shouldn't have to reboot just because
you replace a hot plug disk.
Hard to believe! But that's the most recent state of affairs. Not even
the Sun technician made the disk to show up in /dev/dsks. They have
replaced it 3 times assuming it to be defect! :-)
I tried to remotely reboot the server (with LOM) and go into the SCSI
BIOS to initialize the disk, but the BIOS requires a key combination to
initialize the disk that does not go through the remote connections
(don't remember which one). That's why I am planning to drive to the
remote location and do it manually with a server reboot and keyboard
and screen attached like in the very old days. :-(
Depending on the hardware and the state
of your system, it might not be the problem at all, and rebooting may
not help. Are the device links for c1t6* gone in /dev/(r)dsk?
Then someone must have ran a "devfsadm -C" or something like that.
You could try "devfsadm -sv" to see if it wants to (re)create any
device links. If you think that it looks good, run it with "devfsadm
-v".
If it is the HBA/raid controller acting up and not showing recently
inserted drives, you should be able to talk to it with a program
from within the OS. raidctl for some LSI HBAs, and arcconf for
some SUN/StorageTek HBAs.
I have /usr/sbin/raidctl on that machine and just studied the man page
of this tool. But I couldn't find hints of how to initialize a disk
c1t16d0. It just talks about setting up raid volumes!? :-(
Thanks a lot,
Andreas
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