[Linux-cluster] can not mount GFS, "no such device"

Gordan Bobic gordan at bobich.net
Wed Dec 30 07:23:40 UTC 2009

Ian Hayes wrote:

> I had a similar problem in my Redhat Clustering and Storage Management 
> class the other week. I believe the problem was with a couple of 
> mistakes I made while playing around in one of the labs. I know once it 
> was because I was trying to mount the block device instead of the 
> logical volume.

I'm assuming you mean that you were mkfs-ing one and then trying to 
mount the other. I'm vehemently against putting everything on lvm just 
for the sake of it, but I've never had a problem with mkfs-ing or 
mount-ing either, as long as it's consistent. I tend not to partition 
iSCSI and DRBD volumes, so I know that working direct with the whole 
block device works just fine.

>     in my humble opnion, redhat has a log way to provide real enterprise
>     solution, both from software quality and documentation.
>     There doesn't seem to be enough in this thread to persuade me that
>     the cause of problems isn't user error. :)
> IIRC, gfs2 is still under development and considered experimental. 
> There's tons of documentation for production-quality GFS and I imagine 
> once gfs2 gets more mainlined, this will be the case also. 

Don't quite me on this, but I'm pretty sure GFS2 is deemed stable as of 
RHEL 5.4 (or was it 5.3?). Having said that, I haven't yet deployed any 
GFS2 volumes in production, and don't plan on doing so imminently, so 
draw whatever conclusions you see fit from that. ;)


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