We're talking 36TB of storage here.. I've never had much success partitioning an array of that size (and actually being able to use all of the space) without lvm. But I might give that a try.
Continuing along this line of thought: If I stop access to the array from all of the servers before I make any changes, I could probably even make use of lvm without clustering. Charles On Thu, Mar 8, 2012 at 5:59 PM, Jeff Sturm <[email protected]> wrote: > With aoe you can use old-fashioned disk partitioning. Just run "parted" > (or whatever partitioning tool you choose) and allocate storage for > partitions as you see fit.**** > > ** ** > > The benefits of doing this are: Easier/simpler to setup than cluster > suite, and you can still use all the spindles from your aoe target (for > example by creating a large RAID-10 array across all disks).**** > > ** ** > > The downside of partitions is they aren't easy to change. You can add > them safely while the storage array is in use, but each host needs to > reload the partition table when you're done with changes before the new > storage can be used, and that may not happen until you rmmod/modprobe the > aoe driver, which you can't do while any partitions are in use, e.g. on > mounted file systems. And resizing partitions is tricky because they are > allocated on consecutive sectors.**** > > ** ** > > So if you want the flexibility of adding/removing/modifying volumes at any > time, it may be worth the trouble to get Cluster Suite running so you can > use CLVM. If you just want to carve it up once and forget about it, > partitioning the array will be the fastest.**** > > ** ** > > -Jeff**** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Charles Riley > *Sent:* Thursday, March 08, 2012 1:59 PM > *To:* linux cluster > *Subject:* [Linux-cluster] Clustered LVM for storage**** > > ** ** > > Greetings,**** > > ** ** > > I have an aoe device with a lot of storage in it that I would like to > share among four rhel 4 servers. Each of the servers will mount it's own > storage, no data is shared between them. e.g the servers won't be mounting > the same volumes.**** > > ** ** > > I could create four different raid groups on the aoe device and present a > different one to each server, but that would waste space.**** > > What I'd rather do is create one big raid group and use clustered lvm to > divvy the space between servers.**** > > ** ** > > Is it possible? Would it be enough to run just the clustered lvm daemon, > or would I need to install all of the cluster suite?**** > > Are there other/better options?**** > > ** ** > > Thanks!**** > > ** ** > > Charles**** > > ** ** > > > **** > > ** ** > > ** ** > > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Charles Riley | eRAD <http://www.erad.com> | Director of Technical Solutions | O: 864.640.8648 C: 864.881.1331
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