I asked for the RAID10 in a previous note.
An easy way to do it that *might* work – (it would work, but never benchmarked the setup), is
to use the volume mirror – and get 2 mirrored volumes of 2TB each (in 8T unit).
Then either (and not sure which is best) create 1 physical volume with both mirrored volumes in
it (pvcreate), then a striped logical volume on top of the physical volume,
OR (probably best, but haven’t tried either)
2 physical volumes, each 1 one of the mirrored devices in it->
/dev/md0 -> pv0
/dev/md1 -> pv1
then 1 volume group with the 2 pv’s (lvcreate
lvol0 = (pv0 + pv1)
then make logical volume with 2 strips and a strip size equal to (what is optimal for your
HW? How much buffering will the HD’s do on a write? Maybe use strip size of 32-64K?
Anyway, that should give reasonable performance of up to 2X using 1 disk, but full data
backup and shouldn’t be CPU bound.
I note that the ext3 file system is built without acls and attrs.
How is the xfs file system built? I could hope it was built with acls and attrs left in?
This would allow samba to support fulll NT acls to its shares.
Am I talking to air?