why we are using option rw,suid,largefiles,nolargefiles,delaylog,datainlog,quota in vxfs

[senthil_kumar_1]

Hi

I am new to HP-UX.

Pls explain the purpose of following options rw,suid,largefiles,nolargefiles,delaylog,detainlog,quota.

Pls include other important options if i missed.

[Steven E. Protter]

Shalom,

You refer to /etc/fstab mount options.

largefiles lets you mount files ystems in excess of 2 GB. nolargefiles the default lets you mount smaller file systems.

These two options were dropped from fstab with the release of 11.11 HP-UX 11i v1

rw permits read-write access
suid permits suid super user id to be set. You can set for security reasons that to be not permitted and that stops programs with root access to be created on the filesystem.

quota lets you set user quotas in an effort to keep users from filling the filesystem.

delay and detain log options effect how vxfs maintains journals and impacts performance and ability to recover the file system.

http://docs.hp.com/en/B2355-90682/fstab.4.html

http://www.docs.hp.com/en/5971-4772/apas03.html

SEP

[Michael Mike Reaser]

SEP about largefiles/nolargefiles> These two options were dropped from fstab with the release of 11.11 HP-UX 11i v1

Um, I could *swear* that when I ran my farm of 11.11 systems that I had to enable largefiles on my Oracle partitions. It was either enabling largefiles, or having a parade of Cranky Grumpy DBAs at my desk...

[Tingli]

largefile is in 11.23 too.

[Steven E. Protter]

allow me to clarify.

largefiles was dropped as an fstab option in 11.11

Try putting it in there and mounting it won't work.

-o largefiles is handled by the newfs command.

largefiles is an option, its just not handled in fstab anymore.

SEP

[Patrick Wallek]

>>largefiles lets you mount files ystems in
>>excess of 2 GB. nolargefiles the default
>>lets you mount smaller file systems.

No, not even close!

The largefiles and nolargefiles have absolutely NOTHING to do with the file system size!

What they enable is the ability to have a FILE larger than 2GB in the file system.

You could create a 500GB file system and mount it with the nolargefiles option. You just would not be able to have files larger than 2GB in that file system.

For a detailed explanation of the mount options, check the mount_vxfs man page.

# man mount_vxfs

[senthil_kumar_1]

Hi

Still i am not able to understand suid, delaylog, datainlog.

so pls explain this in detail.

[Patrick Wallek]

Have you read the mount_vxfs man page? These are explained very well there.

If you have **specific** questions about the options after reading, then ask those.

[Ganesan R]

Hi Senthilkumar,

read here..

http://docs.hp.com/en/B3929-90011/ch05s04.html

[senthil_kumar_1]

what is indent log.