Possible new bug in 3.1.5 discovered

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"May you live in interesting times"

Is this a curse or a blessing? :)

I've just tested a 3.1.5 GlusterFS native client against a 3.1.3 storage pool using this volume:

Volume Name: pfs-rw1
Type: Distributed-Replicate
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: jc1letgfs16-pfs1:/export/read-write/g01
Brick2: jc1letgfs13-pfs1:/export/read-write/g01
Brick3: jc1letgfs16-pfs1:/export/read-write/g02
Brick4: jc1letgfs13-pfs1:/export/read-write/g02
Options Reconfigured:
performance.cache-size: 2GB
performance.stat-prefetch: 0
network.ping-timeout: 10
diagnostics.client-log-level: ERROR

Any attempt to write to that volume mounted on a native client using version 3.1.5 results in a hang at the command line, which I can only break out of by killing my ssh session into the client. Upon logging back into the same client, I see a zombie process from the attempt to write:

21172 ?        D      0:00 touch /pfs1/test/junk1

Anybody else run into this situation?

Client mount log (/var/log/glusterfs/pfs2.log) below:

[2011-06-29 10:28:07.860519] E [afr-self-heal-metadata.c:522:afr_sh_metadata_fix] 0-pfs-ro1-replicate-6: Unable to self-heal permissions/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
[2011-06-29 10:28:07.860668] E [afr-self-heal-metadata.c:522:afr_sh_metadata_fix] 0-pfs-ro1-replicate-1: Unable to self-heal permissions/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
ns/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
data self-heal failed on /
data self-heal failed on /
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
ns/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
data self-heal failed on /
data self-heal failed on /
data self-heal failed on /
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
data self-heal failed on /
data self-heal failed on /
data self-heal failed on /
s/ownership of '/' (possible split-brain). Please fix the file on all backend volumes
data self-heal failed on /
data self-heal failed on /
data self-heal failed on /
data self-heal failed on /

James Burnash
Unix Engineer
Knight Capital Group




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