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 <div class="gmail_quote">2013/3/17 Nattapon Viroon <<a href="mailto:droidbkk@gmail.com" target="_blank">droidbkk@gmail.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> 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 -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </blockquote></div> -- esta es mi vida e me la vivo hasta que dios quiera