Re: [CentOS] drbd xen question

2009-08-21 Thread Ross Walker
On Aug 21, 2009, at 6:27 AM, Karanbir Singh wrote: > On 08/20/2009 05:46 PM, Coert Waagmeester wrote: >> Xen DomU >> >> DRBD >> >> LVM Volume >> >> RAID 1 >> > > this makes no sense, you are loosing about 12% of i/o capability > here - > even before hitt

Re: [CentOS] drbd xen question

2009-08-21 Thread Karanbir Singh
On 08/20/2009 05:46 PM, Coert Waagmeester wrote: > Xen DomU > > DRBD > > LVM Volume > > RAID 1 > this makes no sense, you are loosing about 12% of i/o capability here - even before hitting drbd, and then taking another hit on whatever drbd brings in ( depen

Re: [CentOS] drbd xen question

2009-08-20 Thread Alan Sparks
Coert Waagmeester wrote: > Hello Alan, > > This is my current setup: > > Xen DomU > > DRBD > > LVM Volume > > RAID 1 > > > What I first wanted to do was: > > DomU | DRBD > > LVM Volume > > RAID 1 > > If I understand you diagram, y

Re: [CentOS] drbd xen question

2009-08-20 Thread Coert Waagmeester
On Thu, 2009-08-20 at 09:38 -0600, Alan Sparks wrote: > Ross Walker wrote: > > On Aug 20, 2009, at 10:22 AM, Coert Waagmeester > > wrote: > > > >> Hello all, > >> > >> > >> I am running drbd protocol A to a secondary machine to have > >> 'backups' of > >> my xen domUs. > >> > >> Is it neces

Re: [CentOS] drbd xen question

2009-08-20 Thread Alan Sparks
Ross Walker wrote: > On Aug 20, 2009, at 10:22 AM, Coert Waagmeester > wrote: > >> Hello all, >> >> >> I am running drbd protocol A to a secondary machine to have >> 'backups' of >> my xen domUs. >> >> Is it necessary to change the xen domains configs to use /dev/drbd* >> instead of the LVM

Re: [CentOS] drbd xen question

2009-08-20 Thread Ross Walker
On Aug 20, 2009, at 10:22 AM, Coert Waagmeester wrote: > Hello all, > > > I am running drbd protocol A to a secondary machine to have > 'backups' of > my xen domUs. > > Is it necessary to change the xen domains configs to use /dev/drbd* > instead of the LVM volume that drbd mirrors, and which t

[CentOS] drbd xen question

2009-08-20 Thread Coert Waagmeester
Hello all, I am running drbd protocol A to a secondary machine to have 'backups' of my xen domUs. Is it necessary to change the xen domains configs to use /dev/drbd* instead of the LVM volume that drbd mirrors, and which the xen domU runs of? regards, Coert ___