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drbd-user: Re: [DRBD-user] Uncatchable DRBD out-of-sync issue

Re: [DRBD-user] Uncatchable DRBD out-of-sync issue

From: Stanislav German-Evtushenko <ginermail_at_nospam>
Date: Mon Mar 25 2013 - 11:52:00 GMT
To: Maurits van de Lande <M.vandeLande@vdl-fittings.com>

> filter = [ "a|drbd|", "r|.*|" ]
yes, something like this is in place

> write_cache_state = 0
I have write_cache_state = 1 (default) but this is only filtering
cache as I understand and /etc/lvm/cache is empty on both nodes

> Do you use some custom disk caching module like flashcache?
I'm not sure what is flashcache so I think don't use it.

> To avoid the dual primary mode I have put all storage on an a HA iSCSI SAN, then drbd can be used in primary/secondary mode. If you want I can send you my setup notes using centos 6.4 drbd, tgt and pacemaker.
SAN always can be considered as a last resort but dual-primary drbd is
a goal because we only need two hosts and no very expensive SANs.

Best regards,
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