[PVE-User] WG: DRBD+ Proxmox2.1 + Debian Squeeze

[Holger Ernst]

When syncing running vms you should be aware that this may lead to
unpredictable state of operation system and/or applications.
First you should use a snapshot prior to sync to avoid corrupt
filesystem or data.
Then you have to be aware that starting a snapshot of a running system
is like switching a running machine off and on again.
So make sure the os can handle that.

regards, holger

> Betreff: Re: [PVE-User] DRBD+ Proxmox2.1 + Debian Squeeze
> 
> since i am not that advance user to use DRBD i found Rsync relatively
> easy. please if this is a wrong approach then kindly let me know.
> 
> i am running 7 to 8 VMs (KVM). on a server that has 8 GB of RAM.
> atleast 1 GB RAM is almost free.
> 
> all the VMs are almost b/w 30 to 50 GB size.
> 
> is that a good idea that i rsync 8 VMs on hourly basis via scheduler.
> is it going to impact on RAM or Processor?
> 
> LAN is not a problem i'll add another LAN Card just for rsync.
> 
> any advice or suggestion would be appreciated.
> 
> Thanks,
> 
> 
> 
> 
> On Mon, Aug 27, 2012 at 3:17 PM, admin extremeshok.com
> <admin at extremeshok.com> wrote:
> > GlusterFS would be better suited for 3 or more servers.
> >
> > We have been using it in production for 1year, with excellent
results.
> >
> > On 2012/08/27 11:12 AM, Martin Maurer wrote:
> >>> Subject: Re: [PVE-User] DRBD+ Proxmox2.1 + Debian Squeeze
> >>>
> >>> Thanks, ill read this. for new bie like me :) its kinda seems hard
to understand
> >>> but ill learn it with no problem,
> >>>
> >>> but there is a question of mine. since Proxmox team highly
supporting DRBD.
> >>> i have seen this in last version 1.9 and now in 2.1.
> >>>
> >> [Martin Maurer]
> >> No, we do not "highly support" DRBD. This is for expert use only.
> >>
> >>> i was talking to a guys in mailing list they were building
openfiler with HW
> >>> RAID1 as a SAN solution for virtualization.
> >>>
> >>> so my question is, why proxmox team dont promote openfiler or
open-iscsi
> >>> as a cheap back end? is there any stability issue or some thing. i
know there
> >>> are pros and cons for every project/product however just to clear
my
> >>> concept i am asking this.
> >> [Martin Maurer]
> >> Openfiler is a SAN distribution, among many others - no problem to
use with Proxmox VE.
> >>
> >> DRBD is a replication software - mirroring block devices via
network. (e.g. Openfiler can use
> DRBD to replicate two Openfilers to the Openfiler HA)
> >>
> >> Martin
> >>
> >> _______________________________________________
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> >
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