Hi Pascal,
I can’t reproduce the error because the condition that it issues is very
especially. The Master host is in the “not real dead” status. ( I doubt it
is Linux’s panic). The TCP stack maybe is bad in Master host. Now I don’t want
to avoid it because I can’t reproduce it. I only want to succeed to switch
form Master to Slave so that my service can be supplied normally. But I can’t
right to switch because of the 10 minutes delay of Drbd.
I run “drbdsetup 0 show” on my host, it shows as following,
disk {
size 0s _is_default; # bytes
on-io-error detach;
fencing dont-care _is_default;
max-bio-bvecs 0 _is_default;
}
net {
timeout 60 _is_default; # 1/10 seconds
max-epoch-size 2048 _is_default;
max-buffers 2048 _is_default;
unplug-watermark 128 _is_default;
connect-int 10 _is_default; # seconds
ping-int 10 _is_default; # seconds
sndbuf-size 0 _is_default; # bytes
rcvbuf-size 0 _is_default; # bytes
ko-count 0 _is_default;
allow-two-primaries;
after-sb-0pri discard-least-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect _is_default;
rr-conflict disconnect _is_default;
ping-timeout 5 _is_default; # 1/10 seconds
}
syncer {
rate 102400k; # bytes/second
after -1 _is_default;
al-extents 257;
}
protocol C;
_this_host {
device minor 0;
disk "/dev/cciss/c0d0p7";
meta-disk internal;
address ipv4 172.17.5.152:7900;
}
_remote_host {
address ipv4 172.17.5.151:7900;
}
In the list , there is “timeout 60 _is_default; # 1/10
seconds”.
Thanks.
Simon
发件人: Pascal BERTON [mailto:[email protected]]
发送时间: 2012年8月21日 星期二 4:58
收件人: 'simon'; [email protected]
主题: RE: [DRBD-user] Drbd : PingAsk timeout, about 10 mins.
Hi Simon !
Sorry for the delay, return day to work, busy day...
Eeh yup, if the former master is down, that’s effectively a fairly good reason
for having a down replication network… J Just to better understand your
specific context, could you please let me know what “cat /proc/drbd” does
report, especially during this blackout period of 10 minutes if you may
reproduce it, and also “drbdsetup 0 show” and “crm configure show”, just to
have the big picture of your configuration.
Regards,
Pascal.
De : simon [mailto:[email protected]]
Envoyé : lundi 20 août 2012 03:05
À : 'Pascal BERTON'; [email protected]
Objet : RE: [DRBD-user] Drbd : PingAsk timeout, about 10 mins.
Hi Pasical,
Thanks your reply.
Yes, the network was bad. Master host was dead so that Slave host took over
its work and mount the drbd partition on Slave host. When mounting , the
timeout issued. But the default timeout of network of drdb is 6 senconds (it
can be set in drbd.conf). But it failed to take effect. why?
Do you have a good idea to make it switch from Master to Slave immediately in
the network anomaly?
Thanks.
Simon
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