On 08/29/2016 06:23 AM, Amjad Syed wrote: > Hello, > We have implemented a two node failover cluster using RHEL pcs in > active passive mode > We have shared storage with one LUN, > Our concern is what if this LUN fails or there is hardware problem > accessing the data in it. > What is the best way to synchronize data between two LUNS ? any > suggestion will help. If you have two identical LUNs, you could run something like drbd to mirror one LUN to a backup: https://www.drbd.org/en/comp/drbd-linux-driver Note this is done at the block level. It doesn't look at filesystem- specific stuff, it just watches block-level disk writes to the primary device and replicates those to the backup over the network. There are other things you can do at a filesystem level, such as rsyncing often, corosync, etc. ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 - - - - Squawk! Pieces of Seven! Pieces of Seven! Parity Error! - ---------------------------------------------------------------------- -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
