Am 03.08.2012 06:03, schrieb Eric Sandeen:
On 7/31/12 8:56 AM, Stefan Priebe - Profihost AG wrote:
Hello list,
i'm planning to create a couple of VMs with just 30GB of space while using xfs as the main filesystem.
Now i alreay know that some of the VMs will grow up to 250GB while resizing the block device and using xfs_growfs.
Should i take care of that and format these disks with special parameters?
I've discovered that a 500GB volume has agcount=4 and 64000 blocks of internal log - while a 300GB volume resized to 500GB has agcount 7 ad only 40960 blocks of internal log.
Is it a problem if this grow will happen in small portions (30GB => 50GB => 75GB => 100GB => ... 300GB)?
This incremental part doesn't matter a bit. The first mkfs will choose the AG count & size according to defaults;
> further growth after this will add new (possibly partial) AGs of that
pre-chosen size.
OK thanks for your reply. But does this influence performance? Should i
perhaps start creating the 30GB with agcount 1 so that while raising the
disk i don't end up with such a high agcount value? Does it make sense
to create a bigger internal log from he beginning?
Thanks
Stefan
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
