Solaris

I have a couple of servers where something weird is going on. When I run the command "mount | grep logging" I get something similair to this

/ on /dev/dsk/c0t0d0s0
read/write/setuid/devices/intr/largefiles/logging/xattr/onerror=panic/dev=220000


But when I look at /etc/vfstab I dont see the logging option.....

How can logging be enabled but not in /etc/vfstab?

Im running on solaris 9. Not using volume management.

As of Solaris 9 logging on UFS filesystems is on by default, you don't need to specify it in vfstab, and to turn it off (in vfstab) you would specify no_logging.

Looking at our systems, I think logging is on by default for all ufs filesystems starting with Solaris 10. At Solaris 9, logging is on by default only for terrabyte filesystems. I guess you have all huge drives. "man mount_ufs" gives the rules for each os.

No, it's default in solaris 9 on UFS filesystems, though maybe not in the early releases. That was one of the contributing factory to the veritas on encapsulated root disk cpu panic/cyclic reboot problem and why the temporary workaround patch explicitly put no_logging in the options for the root filesystem.

I probably wouldn't even have noticed but I had over 200 of them do this to me after a power and ups failure about 12 months ago. When logging was manually removed from vfstab and it was still ocasionally happening I went looking and found that logging was on by default.

[EDIT] Logging by default on UFS was introduced in patch 113073-09 on solaris 9.
The option to turn it off is nologging, not no_logging as I previously posted.

it is enabled by default since solaris 9 04/04 update 6. it's faster and safer.
http://www.sun.com/software/whitepap...erformance.pdf

gP

ok, but, I have servers using veritas, when I grep for logging i get nothing, but in /etc/vfstab i dont see "no logging" either....

and

So if you have earlier than solaris 9 04/04 update 6 or you don't have patch 113073-09 or later then you won't have logging by default.