This is Solaris 10U3 w/127111-05.
It appears that one of the disks in my zpool died yesterday. I got
several SCSI errors finally ending with 'device not responding to
selection'. That seems to be all well and good. ZFS figured it out and
the pool is degraded:
maxwell /var/adm >zpool status
pool: pool1
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas
exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-D3
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
pool1 DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
c0t9d0 ONLINE 0 0 0
c0t10d0 ONLINE 0 0 0
c0t11d0 ONLINE 0 0 0
c0t12d0 ONLINE 0 0 0
c2t0d0 ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
c2t2d0 UNAVAIL 1.88K 17.98 0 cannot open
errors: No known data errors
My question is why does ZFS keep attempting to open the dead device? At
least that's what I assume is happening. About every minute, I get eight
of these entries in the messages log:
Feb 12 10:15:54 maxwell scsi: [ID 107833 kern.warning] WARNING:
/[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/SUNW,[EMAIL PROTECTED]/[EMAIL
PROTECTED],0 (sd32):
Feb 12 10:15:54 maxwell disk not responding to selection
I also got a number of these thrown in for good measure:
Feb 11 22:21:58 maxwell scsi: [ID 107833 kern.warning] WARNING:
/[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/SUNW,[EMAIL PROTECTED]/[EMAIL
PROTECTED],0 (sd32):
Feb 11 22:21:58 maxwell SYNCHRONIZE CACHE command failed (5)
Since the disk died last night (at about 11:20pm EST) I now have over
15K of similar entries in my log. What gives? Is this expected behavior?
If ZFS knows the device is having problems, why does it not just leave
it alone and wait for user intervention?
Also, I noticed that the 'action' says to attach the device and 'zpool
online' it. Am I correct in assuming that a 'zpool replace' is what
would really be needed, as the data on the disk will be outdated?
Thanks,
-Brian
--
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Brian H. Nelson Youngstown State University
System Administrator Media and Academic Computing
bnelson[at]cis.ysu.edu
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