[Ocfs2-users] Periodic hangs

[Sunil Mushran]

Take a stack trace of the hang. If you are on 2.6.32, you could do:

# find /proc -name stack | while read A ; do D=$(dirname $A); echo $A; 
cat $D/cmdline; echo ; cat $A; echo ; done;

Attach the output to a bugzilla on oss.oracle.com.

On 10/15/2010 08:16 AM, Emil Noether wrote:
> Hi,
>
> I have a SATABoy2 Nexan storage with 8 disks (SATA Hitachi 
> HUA721075KLA330) connected to raid 6.  Two image servers and two 
> webservers. Image servers are connected to storage via iSCSI (1GBit) 
> and webservers are connected via fibre (QLogic ISP2432-based 4Gb). 
> There is ocfs2 filesystem on the storage disk. When I disconnect 
> webserver1 (identical with webserver2) everything is ok. But when I do 
> "/etc/init.d/o2cb start", even without mounting the storage disk (so 
> webserver is actually doing nothing) my project is down every aprox 30 
> minutes for aprox 2 minutes.
>
> To describe what is down: There is no problem on image servers, but 
> there is a problem on webserver2. Mounted ocfs2 disk is not responding 
> (I can't run even "df" command), so load goes to aprox 400 and number 
> of running apaches reaches it's maximum and so on. The web page is not 
> responding.
>
> I store all of my logs on local disks so not on ocfs2 disk.
>
> I use 2.6.32 kernel on servers, but I have already tried change it to 
> some another, but with no result.
>
> I use ocfs2-tools in version 1.4.1-1.
>
> My distro is Debian Lenny (5.0.6) x64.
>
> My /etc/default/o2cb:
> O2CB_ENABLED=true
> O2CB_BOOTCLUSTER=ocfs2
> O2CB_HEARTBEAT_THRESHOLD=14
> O2CB_IDLE_TIMEOUT_MS=10000
> O2CB_KEEPALIVE_DELAY_MS=5000
> O2CB_RECONNECT_DELAY_MS=2000
>
> My /etc/ocfs2/cluster.conf:
> node:
>   ip_port = 7777
>   ip_address = 10.0.0.111
>   number = 0
>   name = www1
>   cluster = ocfs2
>
> node:
>   ip_port = 7777
>   ip_address = 10.0.0.112
>   number = 1
>   name = ww2
>   cluster = ocfs2
>
> node:
>   ip_port = 7777
>   ip_address = 10.0.0.121
>   number = 2
>   name = img1
>   cluster = ocfs2
>
> node:
>   ip_port = 7777
>   ip_address = 10.0.0.122
>   number = 3
>   name = img2
>   cluster = ocfs2
>
> cluster:
>   node_count = 4
>   name = ocfs2
>
>
> Any help is very appreciated,
> Best Regards,
>
> Emil Noether
>
>
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