xfs_growfs / planned resize / performance impact

[Stefan Priebe]

Am 05.08.2012 13:03, schrieb Martin Steigerwald:
> Am Freitag, 3. August 2012 schrieb Stefan Priebe - Profihost AG:
> But then you didn´t describe where those VM disks are located. If that
> location has many spindles it might not matter at all or even improve
> performance.
30 disks raid 50 via LIO iSCSI and LVM.

> Anyway, I do not see much sense to make them 30 GiB when they can grow to
> 500 GiB – at least provided that you use thin provisioning. Cause
> xfs_growfs and resizing the image will likely be a manual step while thin
> provisioning goes automatically and only needs to be monitored.
I do not use thin provisioning as dm thin is not production ready isn't it?

> That manual step makes sense tough if you want to guarentee all the space
> thats visibly in df output is really physically available, without
> providing for x times 500 GiB initially.
Oh i can easily automate the whole resizing stuff.

Stefan