hi fellas
I'm setting up a lvm raid0, 4 devices, I want raid0 and I
understand & expect - there will be four stripes, all I care
of is speed.
I do:
$ lvcreate --type raid0 -i 4 -I 16 -n 0 -l 96%pv
intel.raid0-0 /dev/sd{c..f} # explicitly four stripes
I see:
$ mkfs.xfs /dev/mapper/intel.sataA-0 -f
meta-data=/dev/mapper/intel.sataA-0 isize=512 agcount=32,
agsize=30447488 blks
= sectsz=512 attr=2,
projid32bit=1
= crc=1 finobt=0,
sparse=0
data = bsize=4096
blocks=974319616, imaxpct=5
= sunit=4 swidth=131076
blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=475744,
version=2
= sectsz=512 sunit=4 blks,
lazy-count=1
realtime =none extsz=4096 blocks=0,
rtextents=0
What puzzles me is xfs's:
sunit=4 swidth=131076 blks
and I think - what the hexx?
In a LVM non-raid stripe scenario I've always remember it
was: swidth = sunit * Y where Y = number of stripes, right?
I'm hoping some expert could shed some light, help me(maybe
others too) understand what LVM is doing there? I'd appreciate.
many thanks, L.
_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
