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Re: [Linux-cluster] How CMirror do replication between luns on diffrence storages



So the cMirror  don't do data replication via network lan like drbd do.
Data replication  do across fibre. 
So this make cMirror suppose to be better performance than drbd ?


On Sun, Mar 17, 2013 at 3:37 PM, emmanuel segura <emi2fast gmail com> wrote:
Daemon providing device-mapper-based mirrors in a shared-storage cluster

The cmirror package provides user-level tools for managing cluster mirroring. Cmirror is needed for LVM-based mirroring (RAID1) in a cluster environment

I if rember well, the cmirror daemon is needed when you have a share storage and you use a lvm mirror

2013/3/17 Nattapon Viroon <droidbkk gmail com>

Hi,

  I try setup data replication between storages and use gfs on top.
Im not sure which solutions is good to go between clvm+cMirror+gfs or DRBD+gfs

 DRBD is do raid1 across network that require extra network channel to do replication

But I don't know how actually cMirror work to replicate data between luns.
Do the cMirror require separate network channel to do data replication ?
or cMirror do replicate via fibre channel ?

Please advise.

Nattapon

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