From: Joe Landman <joe.landman@gmail.com>
To: xfs@oss.sgi.com
Subject: swalloc/allocsize question
Date: Mon, 3 Aug 2015 13:27:03 -0400 [thread overview]
Message-ID: <55BFA467.8000707@gmail.com> (raw)
Hi folks:
I've noticed some "odd" behavior while experimenting with xfs mounts
on relatively recent kernels (3.18 series). Basically, the
swalloc,allocsize=x options are being modified to something different.
That is:
root@usn-04:~/burn-in/fio# uname -r
3.18.12.scalable
root@usn-04:~/burn-in/fio# mount -o
inode64,noatime,nodiratime,swalloc,allocsize=1280k /dev/sda /data/1
root@usn-04:~/burn-in/fio# mount | grep sda
/dev/sda on /data/1 type xfs
(rw,noatime,nodiratime,swalloc,attr2,inode64,allocsize=256k,noquota)
This is a hardware RAID6 with a 128k chunk size and 12 elements (so 10
data drives, thus the 1280k allocsize for stripe width allocation). Is
this something specific to xfs itself, or is this an issue in the mount
tools ?
FWIW: we are using xfs-tools 3.2.2, kernel 3.18.12. I've also seen this
with the 3.10 series though, so I am not sure where to look to track
this down. Any guidance/suggestion? Thanks!
Joe
joe.landman@gmail.com
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next reply other threads:[~2015-08-03 17:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-03 17:27 Joe Landman [this message]
2015-08-03 22:23 ` swalloc/allocsize question Dave Chinner
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