Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-16 Thread Florian Philipp
Am 15.03.2011 07:50, schrieb Matthew Marlowe: My problem is that LVM2 is not supported in parted which is the recommended tool to deal with this. I suspect I only need to map the individual PE to a particular start sector on each drive, not btrfs, but then there is stripe/block sizes to

Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-16 Thread Joost Roeleveld
On Wednesday 16 March 2011 09:53:37 Florian Philipp wrote: Am 15.03.2011 07:50, schrieb Matthew Marlowe: My problem is that LVM2 is not supported in parted which is the recommended tool to deal with this. I suspect I only need to map the individual PE to a particular start sector on

Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-15 Thread Matthew Marlowe
My problem is that LVM2 is not supported in parted which is the recommended tool to deal with this. I suspect I only need to map the individual PE to a particular start sector on each drive, not btrfs, but then there is stripe/block sizes to consider as well ... WD also are recommending

Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-15 Thread William Kenworthy
On Mon, 2011-03-14 at 23:50 -0700, Matthew Marlowe wrote: My problem is that LVM2 is not supported in parted which is the recommended tool to deal with this. I suspect I only need to map the individual PE to a particular start sector on each drive, not btrfs, but then there is

Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-15 Thread Volker Armin Hemmann
On Tuesday 15 March 2011 13:37:46 Bill Kenworthy wrote: I have recently added a WD 2TB green drive to two systems and am finding terrible performance with btrfs on an LVM using these drives. I just saw on the mythtv list about the sector size problem these drives have where they have poor

[gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive

2011-03-14 Thread Bill Kenworthy
I have recently added a WD 2TB green drive to two systems and am finding terrible performance with btrfs on an LVM using these drives. I just saw on the mythtv list about the sector size problem these drives have where they have poor performance unless you can map the partitions onto certain