On 12/22/2015 10:33 AM, Tejas Rao wrote:
On 12/21/2015 20:50, Aaron Knister wrote:
[...]
I'm curious now, Redhat doesn't support SW raid failover? I did some
googling and found this:
https://access.redhat.com/solutions/231643
While I can't read the solution I have to figure that they're now
supporting that. I might actually explore that for this project.
https://access.redhat.com/solutions/410203
This article states that md raid is not supported in RHEL6/7 under any
circumstances, including active/passive modes.
OCFS2 or GFS2(same for GPFS, as the shared filesystem) over a shared
storage is a typical Cluster configuration for Linux High Availability.
Where, Clustered LVM (cLVM) is supported by both SUSE and Redhat to do
mirroring to protect the data. However, the performance loss is very big
and make people not so happy about this clustered mirror solution. This
is where the motivation for clustered MD solution comes from.
With clustered md, this new solution could provide nearly the same
performance as the native raid1. You may have interest to validate this
from your lab with your configuration;)
Cheers,
Roger
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