/etc/fstab

[Prashanth Waugh]

what is the differance between delaylog and defaults in /etc/fstab

[James R. Ferguson]

Hi:

See the manpages for 'mount_vxfs' :

http://docs.hp.com/en/B3921-60631/mount_vxfs.1M.html

Regards!

...JRF...

[Vivek Bhatia]

Hi Atul,

Control intent logging. To maintain file system integrity after a system failure, logging must be enabled. In log mode, file system structural changes are logged to disk before the system call returns to the application. If the system crashes, fsck_vxfs(1M) completes logged operations that did not complete.

In delaylog mode, some system calls return before the intent log is written. The default is delaylog. This improves the performance of the system, but some changes are not guaranteed until a short time later when the intent log is written. This mode approximates traditional UNIX system guarantees for correctness in case of system failures.

In tmplog mode, the intent log is almost always delayed. This improves performance, but recent changes may disappear if the system crashes. This mode is only recommended for temporary file systems.

nolog is an alias for tmplog.

Defaults:
defaults Uses the default options that are rw, suid, dev, exec, auto, nouser, and async.