[Gluster-users] 3.3.1 breaks NFS CARP setup

Dan Bretherton d.a.bretherton at reading.ac.uk
Mon Oct 22 13:42:02 UTC 2012

Dear All-
I upgraded from 3.3.0 to 3.3.1 from the epel-glusterfs repository a few 
days ago, but I discovered that NFS in the new version does not work 
with virtual IP addresses managed by CARP.  NFS crashed as soon as an 
NFS client made an attempt to mount a volume using a virtual IP address, 
but mounting from a server's fixed IP address did not cause any 
problems.  The following errors appeared in nfs.log every time NFS crashed.

[2012-10-18 23:26:49.493953] E [nfs3.c:1409:nfs3_lookup] 0-nfs-nfsv3: 
Volume is disabled: odin
pending frames:

patchset: git://git.gluster.com/glusterfs.git
signal received: 6
time of crash: 2012-10-18 23:26:49
configuration details:
argp 1
backtrace 1
dlfcn 1
fdatasync 1
libpthread 1
llistxattr 1
setfsid 1
spinlock 1
epoll.h 1
xattr.h 1
st_atim.tv_nsec 1
package-string: glusterfs 3.3.1

A large core dump was also produced each time, usually about 800MB in 
size. If anyone would be interested in looking at one of these I will 
make it available for download from our web server.

I don't know if this can be called a bug since CARP is not a standard 
GlusterFS feature, but I really would prefer to retain the measure of 
resiliency that CARP provides.  Any suggestions would be much 
appreciated.  I ended up rolling back to version 3.3.0 to get things 
working again.

Incidentally, when I decided to downgrade 3.3.0 I discovered that those 
RPMs aren't available for download from http://download.glusterfs.org  
or http://repos.fedorapeople.org/repos/kkeithle/glusterfs 
(epel-glusterfs) any more.  I managed to find RPMs for version 3.3.0 by 
Googling for the file names and found them here: 
http://bits.gluster.com/gluster/glusterfs/3.3.0/x86_64/.  I don't know 
if this is an official download site, but it might be worth putting a 
link to it from the Gluster community web site in case anyone else needs 
to downgrade.


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