Les Mikesell wrote at about 14:58:30 -0600 on Wednesday, March 9, 2011:
 > On 3/9/2011 2:04 PM, Jeffrey J. Kosowsky wrote:
 > >
 > > On the NAS, I upgraded the kernel to a debian kernel, changed from
 > > ext2 to lvm2, and changed from RAID1 to non-RAID (which together only
 > > slightly affected NFS transfer speeds) - but again since the NFS
 > > speeds are reasonable, can any of the changes on the NAS even be a
 > > cause?
 > 
 > I've seen big speed drops from lvm in some circumstances although 
 > everyone says there isn't supposed to be that much overhead.
 > 

Yes I saw that with snapshots but I removed the snapshots and that
didn't affect the BackupPC speed.
Also, since I'm running over NFS and the NFS speeds for read/write
seem "normal", I'm not understanding how lvm could be the issue in
this case.

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