I'm experiencing some strange things with AdvFS. When I unmount my domains,
occasionally (as in 3 times in 6 weeks) they don't unmount completely, when
I try to mount them again, I've had it where either it didn't mount (it
would hang for about 5 minutes, then give an "I/O error") or I would get a
panic that brought me to the SRM console. Also, these domains are
synchronized at the time to an EMC BCV disk; and after the unmount command
(supposedly) completes, the split fails on those offending domains with a
"Disk is reserved or in-use" error.
I've been able to unmount/mount the domains with reasonable frequency by
shutting down to the SRM and then booting to Single-User mode. From SU
mode, I'm able (most of the time) to mount the offending domain, then
unmount it. This has typically cleared up the problem. The only time this
didn't fix it was 2 weeks ago when I was having the panics bringing me to
SRM. The server was an 8400 running PK5 at the time. I installed PK6
tonight after the last instance.
I also experience this on a 4000 running PK6 with less frequency (but I am
unmounting/mounting fewer domains less often here).
The reason I asked about users running Power Path was that when I'm in SU
mode, the mounting/unmounting typically clears up the disk. But at
run-level 3 (with Power Path running), we've occasionally had the problems
described.
We transitioned from UFS to AdvFS for these disks because we didn't want to
have to fsck 1TB of disk when we booted, but I'm beginning to think that
we'd be better off to go back to UFS for these 50GB disks.
Thanks,
John
==========================
John F. Losey Jr.
UNIX Systems Administrator
HBS International, Inc.
johlos_at_hbsi.com
(800) 290-8982 ext. 614
==========================
Received on Sun Apr 23 2000 - 07:02:08 NZST