On Apr 8, 2008, at 9:37 AM, LI Xin wrote:
Johan Ström wrote:
Hello
A box of mine running RELENG_7_0 and ZFS over a couple of disks (6
disks, 3 mirrors) seems to have gotten stuck. From Ctrl-T:
load: 0.50 cmd: zsh 40188
[zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u 0.04s 0% 3404k
load: 0.43 cmd: zsh 40188
[zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u 0.04s 0% 3404k
load: 0.10 cmd: zsh 40188
[zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u 0.04s 0% 3404k
load: 0.10 cmd: zsh 40188
[zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u 0.04s 0% 3404k
load: 0.11 cmd: zsh 40188
[zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u 0.04s 0% 3404k
Worked for a while then that stopped working too (was over ssh).
When trying a local login i only got
load: 0.09 cmd: login 1611 [zfs] 0.00u 0.00s 0% 208k
I found one post like this earlier (by Xin LI), but nobody seemed
to have replied...
in my current conf, I think my kmem/kmem_max is at 512Mb (not sure
though, since I've edited my file yesterday for next reboot), with
2G of system RAM.. Normally I'd run kmem(max) 1G (with arcsize of
512M. currently it is at default), but since I just got back to 2G
total mem after some hardware problems I've been runnig at those
lows (1G total is kindof tight with zfs..)
Well, just wanted to report... The box is not totally dead yet, ie
I can still do Ctrl-T on console, but thats it.. I don't really
know what more I can do so.. I don't have KDB/DDB.
I'll wait another hour or so before I hard reboot it, unless it
"unlocks" or if anyone have any suggestions.
The key is to increase your kmem and prevent it from being
exhausted. I think more recent OpenSolaris's ZFS code has some
improvements but I do not have spare devices at hand to test and
debug :(
Yep, never had the problem when I was running with 2G total mem, but
then one stick (damn consumer crap) failed and I was left with 1G, and
I started to have random problems. Going to tune kmem back up now when
I got more mem again, thinking about putting in 4G too..
Maybe pjd@ would get a new import at some point? I have cc'ed him.
Cheers,
--
Xin LI <[EMAIL PROTECTED]> http://www.delphij.net/
FreeBSD - The Power to Serve!
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