I am having problems with a openindiana storage server I have built am I am
trying to track down the cause to fix it. The current symptoms are seen from
all windows clients (both 7 and XP) that will report an error stating.
Path File is not accessible. The specified network name is no longer
available.
Another symptom is windows explorer hangs and the user has to wait for it
to some back.
Just waiting a while ( a few minutes) and the box comes back.
I currently think the root cause is in openindiana somewhere but am at a
bit of a loss. I have tried many things and have still not fixed it. I think
the box is lightly loaded for the hardware spec but kernel load increases to
40% when a zfssnap is taking place.
Hardware spec.
2 x Xeon E6520 cpus
48 GB RAM
Intel HC5520 motherboard
3 x LSI SAS 9211-8i cards
Currently on openindiana 148
The box is joined to a windows 2003 domain.
Zpool tank is 3 way mirror of 7 x 3TB hitachi disk (using 21 disks in total,
zpool size of 19 TB, ) with 2 x SSD 8GB ZIL on each and 140GB L2ARC on
each, default checksum, no dedup and no compression.
Server operates as a windows home directory for 58 users (some laptops users
so just a backup location), a main shared drive for the company of 120
users.
It is also a nfs server to a vmware vsphere 4 server hosting 10 virtual
machines.
There are only 8 active production file systems, and 12 backup file systems
from other hosts (done out of hours).
Zpool iostat peaks at about 35 MB for the pool mostly around the 0 to 7 MB
level.
Turning of time-sliderd does not stop the problem. (backups run out of
hours)
A dtrace -n 'sched:::off-cpu { @[execname]=count()}'
Used to give a sched count in the 6 to 7 fiqures over 3 seconds, but turing
apci off with
#eeprom acpi-user-options=0x8
Reduced this to 5 figures.
What can I do to identify the problem to be able to fix it?
Thanks
John
Other information:
dtrace -n 'sched:::off-cpu { @[execname]=count()}'
dtrace: description 'sched:::off-cpu ' matched 3 probes
^C
gconfd-2 2
idmapd 2
inetd 2
nscd 2
sendmail 2
svc.startd 2
gnome-power-mana 3
fmd 4
sshd 4
devfsadm 6
fsflush 7
nfsmapid 7
ntpd 7
dtrace 13
Xorg 17
gdm-simple-greet 17
svc.configd 71
smbd 113
time-sliderd 138
zpool-rpool 597
nfsd 918
zpool-tank 1968
sched 80542
# echo hz/D | sudo mdb -k
hz:
hz: 100
# echo apic_timer::print apic_timer_t | sudo mdb -k
{
mode = 0
apic_timer_enable_ops = oneshot_timer_enable
apic_timer_disable_ops = oneshot_timer_disable
apic_timer_reprogram_ops = oneshot_timer_reprogram
}
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