Re: Building a multipath setup with DRBD in dual-Primary

2009-05-30 Thread PCextreme B.V. - Wido den Hollander
Hi Bart, At the moment this is only a proof of concept wich seems to be working fine. I had some thoughts about it: * The iSCSI target should not run in Write-Back mode * DRBD should run in synchronus mode (protocol C) * I should use the failover policy with dm-multipath instead of round-robin.

Re: Building a multipath setup with DRBD in dual-Primary

2009-05-29 Thread Bart Van Assche
On Fri, May 29, 2009 at 5:21 PM, Wido wrote: > Last night i had the idea of building a multipath iSCSI setup with DRBD > in Primary/Primary. > [ ... ] > Is my setup a possibility or should i stay with the old regular setup of > a Primary/Standy with heartbeat? I strongly recommend you to use a p

Re: Building a multipath setup with DRBD in dual-Primary

2009-05-29 Thread PCextreme B.V. - Wido den Hollander
Hi Mike, Yes indeed, that worked! For the record, my ietd.conf Target iqn.2007-04.nl.pcextreme:ha Lun 0 Path=/dev/data/lun0,Type=fileio,ScsiId=nWFKhBCMq56JfSzq Lun 1 Path=/dev/data/lun1,Type=fileio,ScsiId=wrOhZ1hVFANuQOJM Lun 2 Path=/dev/data/lun2,Type=fileio,ScsiId=pW8e

Re: Building a multipath setup with DRBD in dual-Primary

2009-05-29 Thread Mike Christie
Wido wrote: > Hello, > > Last night i had the idea of building a multipath iSCSI setup with > DRBD in Primary/Primary. > > My idea was/is: > > I have two machines with a 30GB partition wich is synced via DRBD (i > assume everybody here is familiar with DRBD). > > My DRBD is running fine both m

Building a multipath setup with DRBD in dual-Primary

2009-05-29 Thread Wido
Hello, Last night i had the idea of building a multipath iSCSI setup with DRBD in Primary/Primary. My idea was/is: I have two machines with a 30GB partition wich is synced via DRBD (i assume everybody here is familiar with DRBD). My DRBD is running fine both machines are UpToDate and they are