Re: Issue with RHEL6 mkfs.xfs (3.1.1+), HP P420 RAID, and MySQL replication

Hogan Whittall
2015-07-13T04:00:46Z

It's also missing from the command help output as well, but does seem to be there. So, yeah, no man page or command output updates made me think that it was missing completely. Thanks! This makes things much easier. :)

[root ~]# mkfs.xfs -V
mkfs.xfs version 3.1.1

[root ~]# mkfs.xfs
no device name given in argument list
Usage: mkfs.xfs
/* blocksize */ [-b log=n|size=num]
/* data subvol */ [-d agcount=n,agsize=n,file,name=xxx,size=num,
(sunit=value,swidth=value|su=num,sw=num),
sectlog=n|sectsize=num
/* inode size */ [-i log=n|perblock=n|size=num,maxpct=n,attr=0|1|2,
projid32bit=0|1]
/* log subvol */ [-l agnum=n,internal,size=num,logdev=xxx,version=n
sunit=value|su=num,sectlog=n|sectsize=num,
lazy-count=0|1]
/* label */ [-L label (maximum 12 characters)]
/* naming */ [-n log=n|size=num,version=2|ci]
/* prototype file */ [-p fname]
/* quiet */ [-q]
/* realtime subvol */ [-r extsize=num,size=num,rtdev=xxx]
/* sectorsize */ [-s log=n|size=num]
/* version */ [-V]
devicename
<devicename> is required unless -d name=xxx is given.
<num> is xxx (bytes), xxxs (sectors), xxxb (fs blocks), xxxk (xxx KiB),
xxxm (xxx MiB), xxxg (xxx GiB), xxxt (xxx TiB) or xxxp (xxx PiB).
<value> is xxx (512 byte blocks).
[root@ ~]# mkfs.xfs -N -f /dev/mapper/sys-home -d noalign
meta-data=/dev/mapper/sys-home isize=256 agcount=4, agsize=71271680 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=285086720, imaxpct=5
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=139202, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0

-Hogan

----- Original Message -----
From: Dave Chinner <david@fromorbit.com>
To: Hogan Whittall <whittalh@yahoo-inc.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Sent: Sunday, July 12, 2015 7:13 PM
Subject: Re: Issue with RHEL6 mkfs.xfs (3.1.1+), HP P420 RAID, and MySQL replication

On Fri, Jul 10, 2015 at 11:15:04PM +0000, Hogan Whittall wrote:
> As for the noalign option, that would be great to have but it does
> not exist in version 3.1.1 which RHEL6 uses. It sounds like not

$ gl -n 1 63a6384
commit 63a63844f8a02f34cbb724086a1f0bac492f25b3
Author: Nathan Scott <nathans@sgi.com>
Date: Wed Mar 23 02:56:17 2005 +0000

Add noalign suboptions to -d and -r to allow auto-stripe-alignment to be switched off.
Merge of master-melb:xfs-cmds:21924a by kenmcd.
$

The noalign option has been in mkfs since 2005, so it's most
certainly supported on RHEL6.

Looking at the man page history, I forgot that it wasn't documented
until 2013 and hence is missing from the RHEL6 man page, so I can
understand why you might be saying this.

-Dave.