[Linux-cluster] FW: GFS - kernel crash

[Krikler, Samuel]

Hi,

 

We have moved to RedHat4 uppdate 4, and started working with the quorum
disk feature (we have 2 node clusters) and start getting kernel crashes.

 

1.	Configuration: 

	a.	Cluster Suite (u4) and GFS (6.1.6) on the top of rhel 4
u4. 
	b.	Two nodes. 
	c.	Fence device - brocade switch. 
	d.	Attached please find a xml configuration file. 
	e.	Quorum disk on top of CLVM 

2.	Scenario: 

	a.	Configure gfs on two nodes. 
	b.	Start all cluster and GFS services, mount FS by autofs. 
	c.	mkqdisk  -c /dev/vg_qdisk/lv_qdisk -l test_qdisk
(according to the man) 
	d.	one of the sides didn't find quorum on disk (mkqdisk -L
return empty result). 
	e.	Trying to stop GFS caused kernel panic (consistently
several times). 
	f.	The last lines in telnet session were : 

Cluster Service Manager is stopped.

Unmounting GFS filessystems: .... 

 

The stack I get with the kernel panic:

- lock_dlm: lm_dlm_unlock

- gfs: gfs_glock_drop_th

- gfs:gfs_glock_dq

- gfs:gfs_make_fs_ro

- generic_shutdown_super

- dummy_inode_permission

- sys_umount

- error_exit

 

Have anyone experienced or is aware of this problem?

 

Are we doing something we shouldn't be doing?

 

Any advice will be appreciated ...

 

Thanks,

 

Samuel.

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