topic Re: File system nested in Operating System - HP-UX

File system nested

gigiz — Thu, 05 Feb 2009 10:47:07 GMT

Hi guys,
i have a nested file system.
This scenario:
2 nodes of cluster.
/pippo in the /etc/fstab of 2 nodes
/pippo/connect in the Service Guard package.
I need to know if this nested file system is a problem.
Is this a bad configuration? what kind of problem may have?

Re: File system nested

smatador — Thu, 05 Feb 2009 10:57:19 GMT

Hi,

For me is not a problem because when the package on SG start, the vg is activated, the fs is mounted on /pippo/connect, when you stop the package you umount /pippo/connect.

The only problem is you can't umount /pippo when the package is started.

Re: File system nested

Steven E. Protter — Thu, 05 Feb 2009 11:13:37 GMT

Shalom,

Nested FS is not an issue.

The mount should actually be done however in the package control script.

SEP

Re: File system nested

gigiz — Thu, 05 Feb 2009 11:32:16 GMT

Yes,
but i have a /pippo that is local on all nodes, and cannot put into ServiceGuard Package.
Are there known issues or not ?

Re: File system nested

Frank de Vries — Thu, 05 Feb 2009 13:12:42 GMT

To determine if it is an issue,
we need to know the structure of your volumes.

SG relies an the underlying lvm

Thus
Is /pippo part of /vg00 (thus local)
and /pippo/connect of /vg01 (enabled by package)

Then it is not issue.

Re: File system nested

Duncan Edmonstone — Thu, 05 Feb 2009 13:40:43 GMT

If we define 2 types of filesystem:

localFS

clusterpkgFS

then

/localFS1/clusterpkgFS1 is supported

/localFS1/localFS2/clusterpkgFS1 is supported

/localFS1/clusterpkgFS1/clusterpkgFS2 is supported - but be careful with the ordering in the package and don't set any concurrent mount/umount operations

/clusterpkgFS1/localFS1 is *NOT* supported

Does that help make it clear?

HTH

Duncan