Hi Debian folks,
Could anyone please explain me why does this warning appear?
mkfs.xfs: Specified data stripe width 640 is not the same as the volume
stripe width 2048
How does xfs know about volume stripe size width ?
here is the command:
mkfs.xfs -fb size=4k -d su=64k,sw=5 /dev/mapper/mpath2
mkfs.xfs: Specified data stripe width 640 is not the same as the volume
stripe width 2048
meta-data=/dev/mapper/mpath2 isize=256 agcount=32,
agsize=12702944 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=406494128, imaxpct=5
= sunit=16 swidth=80 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=198496, version=2
= sectsz=512 sunit=16 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
storage is hardware raid (hp msa g3)
The LUN allocated to the server is combined from 7 disks in raid6 (I
know it is not optimal for r6, 6+2 would be better),
chunk size is 64k
device is visible as /dev/mapper/mpath2 because of device mapper and
multipathing.
so the formula for mkfs.xfs seem to be correct: su=chunk size(64k),
sw=number of data disks (7-2)
Am I missing something ?
Thank you in advance,
Alex
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