FS_MOUNT_OPT settings vs. /etc/fstab

[Tom Bies]

Hello,

I have a filesystem which is a member of a Service Guard package, and gets mounted at the start of the package. I have been looking for the flags that can be used for the FS_MOUNT_OPT option in the cntl file. I know about "-o rw" (read/write) or "-o ro" (read only). Is there any more options that can be specfied?

In the /etc/fstab file you can set options such as log, delaylog, and tmplog. How can I translate these fstab settings into the cntl file since this lvol is not called from the fstab?

Thanks, Tom

[Jeff Schussele · Accepted solution]

Hi Tom,

Absolutely. That's what you must do because as you mentioned you don't use fstab for MC/SG LVs.
Just separate the options with commas - many as you want. I have some with > 6 - works fine.

Rgds,
Jeff

[Dave Olker]

Hi Tom,

You should be able to use any options that are applicable for the type of filesystem. So if you're talking about a VxFS filesystem, I would think most any option in the mount_vxfs(1M) man page should be allowed in the FS_MOUNT_OPT page.

Regards,

Dave

[Jeff Schussele]

Sorry...should have listed ones I've used:

rw
suid
delaylog
datainlog
nodatainlog
mincache=direct
convosync=direct
tmplog

and more.

Rgds,
Jeff

[Stephen Doud]

You asked HOW to specify additional mount options in the package control script.

List them as the format the mount command expects to see them. The man page for mount_vxfs states:

-o specific_options
Specify options specific to the VxFS file system type.
specific_options is a list of comma separated suboptions
and/or keyword/attribute pairs intended for the VxFS-
specific module of the command. Unlike some file system
commands, multiple -o options do not accumulate; only the
last option is used.

Hence, the following would be acceptable:

FS_MOUNT_OPT[0]="-o rw,delaylog,largefiles"

-sd.

[Tom Bies]

Thanks everyone. I was initially doing a man on just the mount command not mount_vxfs. This clears up the syntax for me.

Thanks again,
Tom