File system nested

[gigiz]

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?

[smatador]

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.

[Steven E. Protter]

Shalom,

Nested FS is not an issue.

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

SEP

[gigiz]

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

[Frank de Vries]

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.

[Duncan Edmonstone · Accepted solution]

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