On Mon, Nov 23, 2009 at 10:25 PM, Rodolfo Gonzalez Gonzalez <[email protected]> wrote: > Hello all, > > has someone worked with DRBD (http://www.drbd.org) for HA of mail storage? > if so, does it have stability issues? comments and experiences are thanked > :) > > Thanks, > Rodolfo. >
We have deployed active/passive DRBD Mailserver for a customer with ~ 5000 mailboxes. runs nice without any problems. CentOS 5.3 Heartbeat 1 ! DRBD 8.3.x LVM If you try to use LVM/ext3 with DRBD and you want to use consistend snapshots, use this setup http://www.drbd.org/users-guide-emb/s-lvm-drbd-as-pv.html Storage layer: disks/hwraid/softwareraid -> drbd -> LVM -> fs this way lvm can trigger the fs with a freezecall before the blocklevel snapshot. We currently migrate our 10000 Mailcluster from a netapp storage to multiple storage server with drbd. Our other project the webcluster runs with about 1000 sites (Typo3/Joomla) on a CentOS nfs-server backed with the drbd. The failover time is about 4 seconds and no pending write ist lost.
