On Oct 8, 2012, at 4:55 AM, Lars Ellenberg wrote:
> On Sat, Oct 06, 2012 at 01:08:43PM +0000, Velayutham, Prakash wrote:
>> Hi,
>>
>> I recently got a DRBD (8.4.2-2) cluster up (still testing). It seems to work
>> nicely with Pacemaker CRM in several scenarios I have tested. Here is my
>> config.
>>
>> global {
>> usage-count yes;
>> }
>>
>> common {
>> handlers {
>> outdate-peer /usr/lib/drbd/crm-fence-peer.sh;
>> fence-peer /usr/lib/drbd/crm-fence-peer.sh;
>> after-resync-target /usr/lib/drbd/crm-unfence-peer.sh;
>> local-io-error "/usr/lib/drbd/notify-io-error.sh;
>> /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ;
>> halt -f";
>> split-brain "/usr/lib/drbd/notify-split-brain.sh root";
>> }
>>
>> startup {
>> degr-wfc-timeout 0;
>> }
>>
>> net {
>> shared-secret 1QP69G4kWDslx2TMiaEStI6bwaGH5y8d;
>> after-sb-0pri discard-zero-changes;
>> after-sb-1pri discard-secondary;
>> after-sb-2pri disconnect;
>> }
>>
>> disk {
>> on-io-error call-local-io-error;
>> fencing resource-and-stonith;
>> }
>>
>> }
>>
>> The io-error handler only gets called when the primary node has a disk
>> issue. I have not seen the secondary node call the "local-io-error"
>> handler when it had disk access issues. Is this by design?
>
> No.
>
> "Works for me", though.
>
> Can you please double check?
> And if in fact you can reproduce, tell us how, including logs?
>
>
> Thanks,
>
> --
> : Lars Ellenberg
Hi Lars,
If I disable all the FC ports in the fiber switch just for the primary node,
the node fences, reboots and comes up, as I would expect. With the exact same
config, if I disable the FC ports just for the secondary node, the node just
sits there and it even shows up as Secondary in /proc/drbd. That sounds odd and
sounds like the config should be "diskless", but it is "call-local-io-error".
Here is the full config.
/etc/drbd.conf
## generated by drbd-gui
include "drbd.d/global_common.conf";
include "drbd.d/*.res";
/etc/drbd.d/global_common.conf:
## generated by drbd-gui
global {
usage-count yes;
}
common {
handlers {
fence-peer /usr/lib/drbd/crm-fence-peer.sh;
after-resync-target /usr/lib/drbd/crm-unfence-peer.sh;
local-io-error "/usr/lib/drbd/notify-io-error.sh;
/usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt
-f";
split-brain "/usr/lib/drbd/notify-split-brain.sh root";
}
startup {
degr-wfc-timeout 0;
}
net {
shared-secret 1QP69G4kWDslx2TMiaEStI6bwaGH5y8d;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
}
disk {
on-io-error call-local-io-error;
fencing resource-and-stonith;
}
}
/etc/drbd.d/mysql1.res:
resource mysql1 {
net {
cram-hmac-alg sha1;
}
on bmimysqlt3.x.x.x {
volume 0 {
device /dev/drbd0;
disk /dev/mapper/mysql_data1;
flexible-meta-disk internal;
}
address x.x.x.x:7788;
}
on bmimysqlt4.x.x.x {
volume 0 {
device /dev/drbd0;
disk /dev/mapper/mysql_data1;
flexible-meta-disk internal;
}
address x.x.x.x:7788;
}
}
Which logs are you wanting me to share?
Thanks,
Prakash
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