[Linux-cluster] GFS: FS Mount Issues

[Bavington, Carl]

Robert,

 

I am also seeing the hang on a second mount, No errors reported in logs.
Did you get an answer?.

 

Thanks,

 

Carl Bavington

mob +44 (0)7793 758327

  _____  

From: linux-cluster-bounces at redhat.com
[mailto:linux-cluster-bounces at redhat.com] On Behalf Of Robert
Sent: 26 July 2004 16:47
To: linux-cluster at redhat.com
Subject: [Linux-cluster] GFS: FS Mount Issues

 

All,

 

I have a question regarding the latest implementation of GFS 6.0 with
RedHat Linux 3.0 Enterprise.  What my company has going on is this:  We
have a SAN project coming up but we do not have the SAN or a similar
type shared storage device available.  We have the node machines on hand
and are trying to work through the GFS implementation as we are new to
GFS (We have run RedHat Linux since version 5.0 and all the flavors in
between.).  We have tried to simulate the SAN environment by utilizing
the GNBD software and we have followed the instructions available at:
http://www.redhat.com/docs/manuals/csgfs/admin-guide/s1-ex-slm-ext-gnbd.
html

 

This is the LOCK_GULM, SLM External, and GNBD example of GFS.

 

We have not had any problems getting the shared devices, pools, and
filesystems created as followed in the documentation.  What we have
happening is that when we mount the GFS filesystem on one node and then
we try and mount the filesystem on the second node, the second node will
hang when issued the command to mount the filesystem.  No errors are
reported on console or in logs.  No errors are reported in the Lock
Server either.  Everything appears to be working correctly as the log
information for both machines at that instant are the same, ie, the one
that is hung, has the same log messages as the one that is not hung.  

 

When I go to node one, with node two still trying to mount the
filesystem, and unmount the filesystem, node two immediately finishes
the mount command and everything is fine with node two.  However, when
trying to mount node one again, it just hangs and so on.  It is only
allowing one node to mount the filesystem at once.  The configuration
files are all the generic examples given in the documentation with the
fencing mechanism as GNBD (Tried fencing with manual and the same
situation exists with that method.).  I can provide all configuration
files and also give log file information if this problem isn't something
that experienced GFS users know what the problem may be.  

 

Thank you all for your time.

 

Robert

Fidelity Communications

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