[Beowulf] how cluster's storage can be flexible/expandable?
duke.lists at gmx.com
Mon Nov 12 03:26:27 PST 2012
On 11/12/12 4:42 PM, Tim Cutts wrote:
> On 12 Nov 2012, at 03:50, Duke Nguyen <duke.lists at gmx.com> wrote:
>> On 11/9/12 7:26 PM, Bogdan Costescu wrote:
>>> On Fri, Nov 9, 2012 at 7:19 AM, Christopher Samuel
>>> <samuel at unimelb.edu.au> wrote:
>>>> So JBODs with LVM on top and XFS on top of that could be resized on
>>>> the fly. You can do the same with ext as well (from memory).
>> We also thought of using LVM on top of RAID disks, but never think of
>> XFS. Why do we need XFS and how does this compare with GPFS?
> XFS is not a parallel filesystem like GPFS, but a lot of us use it because it's so easy to grow the filesystem. I frequently do this with virtual machines to expand their storage.
> 1) Add new virtual disk
> 2) Scan SCSI buses in Linux
> 3) pvcreate the new device
> 4) vgextend
> 5) lvextend
> 6) xfs_growfs
> Job done.
> On systems in our data centre, we tend to use XFS for most local filesystems, unless we have a good reason to use something else.
Is there any reason you do not use GlusterFS on top of XFS? Can I do
that? With that, can I have a parallel system similar to GPFS?
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