On 20/04/15 09:19, Thorvald Hallvardsson wrote:
Hi guys,
I have a question.
I need to setup a HA storage clustering on Linux. The main objective
is to make the cluster HA and as an extra feature load balanced as
well. The problem I'm facing with is the whole system is going to run
on Hyper-V ;-). That's the tricky bit. All the storage backends and
disk presentation will be done by Hyper-V via shared VHDX. Generally
this means that Hyper-V ties 2 (or more) hard drives into one and can
share it across multiple internal VMs. There is no magic when it comes
to Windows side of things as Windows VM supports this solution
natively. We have a bit of hard nut to crack if it comes to Linux side
of things. So I will be given a shared VHDX for my Linux Storage VM
and I need to create a cluster from these shared VHDX'es to make the
data HA and resilient. This scenario can be compared to the single SAN
storage presenting out the same LUN/disk to multiple VMs at the same
time. This is what Windows Hyper-V does in the backend to give me
VHSX. Single VHDX needs to be mounted on multiple storage VMs and then
these VMs needs to have a cluster aware file system on that VHDX and
present it out to the Linux clients which can simultaneously read and
write data onto it. I hope this is pretty clear.
I'm just wondering if GlusterFS is going to work in my configuration.
If so can you please give me some configuration hints on how I should
configure GlusterFS. If GlusterFS is not something I should look for
can you please give me any suggestion on what I should go and try with ?
Thank you in advance for your help.
Regards,
TH
Hi,
GlusterFS is not a shared-storage filesystem. It combines existing
non-shared filesystems into a single network filesystem. Effectively
what you are doing is re-exporting shared storage from multiple VMs, so
you'd probably be better of using a filesystem like OCFS2 or GFS on the
VHDX devices and using two or more VMs running an iSCSI target such as
LIO or SCST to give you MPIO access to these devices.
Unless what you're saying is to set up a separate VHDX, one or more per
VM, put a normal filesystem, eg XFS on top of these and combine them
with GlusterFS (using replicate or distribute for resilience) then that
would work fine (although with possible performance issues from the
extra layer between GlusterFS and the real disks.
Cheers
Alex
--
This message is intended only for the addressee and may contain
confidential information. Unless you are that person, you may not
disclose its contents or use it in any way and are requested to delete
the message along with any attachments and notify us immediately.
"Transact" is operated by Integrated Financial Arrangements plc. 29
Clement's Lane, London EC4N 7AE. Tel: (020) 7608 4900 Fax: (020) 7608
5300. (Registered office: as above; Registered in England and Wales
under number: 3727592). Authorised and regulated by the Financial
Conduct Authority (entered on the Financial Services Register; no. 190856).
_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-users
