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Con Zyor,<br>
<br>
Could you attach the client and server log files? That would helps
us understand what is causing the hang.<br>
<br>
thanks,<br>
kp<br>
<br>
On 11/05/2011 03:17 AM, Con Zyor wrote:
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<p style="margin-bottom: 0in;">Hello;<br>
<br>
I have installed
glusterfs 3.2.4 to a pair of Red Hat Enterprise Linux 6.1 x86_64
machines with 2GB memory. I am attempting to mirror a directory
full
of content between the two servers, which also serve and update
the
content through a webapp via Apache. My issue is that the client
mount points hang for 30 minutes or so if either node is brought
down.<br>
<br>
The volfile will be at the end of this e-mail.<br>
<br>
I
setup two bricks, one each on nodes server01 and server02, using
ext4
and acl mount options. The vfstab entries on each server look
like
this<br>
<br>
<font face="courier new, monospace">/dev/mapper/sysvg-brick01
/brick01
ext4 defaults,nosuid,acl
1 2</font><br>
<br>
From one host, I configure them as a mirror and
start the volume:<br>
<br>
<font face="courier new, monospace">gluster
volume create volume01 replica 2 transport tcp
server01:/brick01
server02:/brick01</font><br>
<font face="courier new, monospace">gluster
volume start volume01</font><br>
<br>
Then server1 and server2 each
mount the volume from themselves via /etc/fstab
entry:<br>
<br>
<font face="courier new, monospace">localhost:/volume01
/glusterfs/vol01 glusterfs
defaults,_netdev,acl 0 0</font><br>
<br>
This
works, modifications inside /glusterfs/vol01 are seen by the
other
host. However when I reboot either server01 or server02, the
client
mount point on the surviving node (/glusterfs/vol01) hangs until
the
node reboots. If the node never boots, the client mount point on
the
surviving node hangs for 30 minutes. I have tried reducing
frame-timeout to 10 seconds to no avail.<br>
<br>
Also; once the
rebooted server comes back online it fails to mount
/glusterfs/vol01,
hanging, again for 30 minutes. A subsequent remount succeeds.
Cancelling the hung mount with umount -f /glusterfs/vol01 and
then
re-mounting succeeds.<br>
<br>
Any ideas what I am doing wrong?<br>
<br>
Here
is the volfile from /var/log/glusterfs/glusterfs-vol01.log<br>
<br>
<font face="courier new, monospace">1: volume volume01-client-0</font><br>
<font face="courier new, monospace">2: type
protocol/client</font><br>
<font face="courier new, monospace">3:
option remote-host server01</font><br>
<font face="courier new, monospace">4:
option remote-subvolume /brick01</font><br>
<font face="courier new, monospace">5:
option transport-type tcp</font><br>
<font face="courier new, monospace">6:
option frame-timeout 10</font><br>
<font face="courier new, monospace">7:
end-volume</font><br>
<font face="courier new, monospace">8: </font><br>
<font face="courier new, monospace">9: volume
volume01-client-1</font><br>
<font face="courier new, monospace">10:
type protocol/client</font><br>
<font face="courier new, monospace">11:
option remote-host server02</font><br>
<font face="courier new, monospace">12:
option remote-subvolume /brick01</font><br>
<font face="courier new, monospace">13:
option transport-type tcp</font><br>
<font face="courier new, monospace">14:
option frame-timeout 10</font><br>
<font face="courier new, monospace">15:
end-volume</font><br>
<font face="courier new, monospace">16:
</font><br>
<font face="courier new, monospace">17: volume
volume01-replicate-0</font><br>
<font face="courier new, monospace">18:
type cluster/replicate</font><br>
<font face="courier new, monospace">19:
subvolumes volume01-client-0 volume01-client-1</font><br>
<font face="courier new, monospace">20:
end-volume</font><br>
<font face="courier new, monospace">21:
</font><br>
<font face="courier new, monospace">22: volume
volume01-write-behind</font><br>
<font face="courier new, monospace">23:
type performance/write-behind</font><br>
<font face="courier new, monospace">24:
subvolumes volume01-replicate-0</font><br>
<font face="courier new, monospace">25:
end-volume</font><br>
<font face="courier new, monospace">26:
</font><br>
<font face="courier new, monospace">27: volume
volume01-read-ahead</font><br>
<font face="courier new, monospace">28:
type performance/read-ahead</font><br>
<font face="courier new, monospace">29:
subvolumes volume01-write-behind</font><br>
<font face="courier new, monospace">30:
end-volume</font><br>
<font face="courier new, monospace">31:
</font><br>
<font face="courier new, monospace">32: volume
volume01-io-cache</font><br>
<font face="courier new, monospace">33:
type performance/io-cache</font><br>
<font face="courier new, monospace">34:
subvolumes volume01-read-ahead</font><br>
<font face="courier new, monospace">35:
end-volume</font><br>
<font face="courier new, monospace">36:
</font><br>
<font face="courier new, monospace">37: volume
volume01-quick-read</font><br>
<font face="courier new, monospace">38:
type performance/quick-read</font><br>
<font face="courier new, monospace">39:
subvolumes volume01-io-cache</font><br>
<font face="courier new, monospace">40:
end-volume</font><br>
<font face="courier new, monospace">41:
</font><br>
<font face="courier new, monospace">42: volume
volume01-stat-prefetch</font><br>
<font face="courier new, monospace">43:
type performance/stat-prefetch</font><br>
<font face="courier new, monospace">44:
subvolumes volume01-quick-read</font><br>
<font face="courier new, monospace">45:
end-volume</font><br>
<font face="courier new, monospace">46:
</font><br>
<font face="courier new, monospace">47: volume
volume01</font><br>
<font face="courier new, monospace">48:
type debug/io-stats</font><br>
<font face="courier new, monospace">49:
option latency-measurement off</font><br>
<font face="courier new, monospace">50:
option count-fop-hits off</font><br>
<font face="courier new, monospace">51:
subvolumes volume01-stat-prefetch</font><br>
<font face="courier new, monospace">52:
end-volume</font><br>
<br>
</p>
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