From: Brian Hemme <bmh@rincon.com>
To: xfs@oss.sgi.com
Subject: mkfs.xfs fails with raid5 and smaller chunk sizes
Date: Tue, 16 Sep 2014 15:03:08 -0700 [thread overview]
Message-ID: <5418B39C.2060707@rincon.com> (raw)
Hello all,
I am having some odd problems with mkfs.xfs when used on a raid 5
array. The array is built from 6 960GB SSDs all connected to SATA ports
on the MB and created with mdadm. If I use a chunk size any smaller
then 512K mkfs.xfs just hangs forever. It continues to use CPU and so
does the raid array but never completes. If the system is just left
running for an extended length of time the whole OS eventually locks
up. I have tried this on three different systems with the same
results. I have searched all over for someone with similar issues
without success. I am hoping I am just doing something clearly wrong
and you all can set me straight quickly.
Some specifics:
Arch linux with 3.14.1 kernel
mkfs.xfs version 3.1.11
mdadm - v3.3 - 3rd September 2013
Commands:
> mdadm --create /dev/md0 --chunk=64K --level=5 --raid-devices=6
/dev/sd[a-f]
> mkfs.xfs /dev/md0
** This command fails and locks up
I have tried specifying the arguments to mkfs.xfs with the same
results. Building a 4 drive array seems to require a chunk size of 1M
or greater to work. Same results if I make a partition on the array and
make the fs there.
Any help would be appreciated
Thanks
Brian
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next reply other threads:[~2014-09-16 22:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-16 22:03 Brian Hemme [this message]
2014-09-16 22:17 ` mkfs.xfs fails with raid5 and smaller chunk sizes Dave Chinner
2014-09-16 22:47 ` Brian Hemme
2014-09-17 6:02 ` Dave Chinner
2014-09-17 15:06 ` Brian Hemme
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