With SLES10 SP1, 'mkfs -t xfs' fails without '-s size=4096'.
This is the resulting output from 'mkfs':
---(begin)
mkfs.xfs: warning - cannot set blocksize on block device /dev/dasdd1:
Invalid argument
Warning: the data subvolume sector size 512 is less than the sector size
reported by the device (4096).
meta-data=/dev/dasdd1 isize=256 agcount=8, agsize=75102
blks
= sectsz=512 attr=0
data = bsize=4096 blocks=600816, imaxpct=25
= sunit=0 swidth=0 blks, unwritten=1
naming =version 2 bsize=4096
log =internal log bsize=4096 blocks=2560, version=1
= sectsz=512 sunit=0 blks
realtime =none extsz=4096 blocks=0, rtextents=0
mkfs.xfs: pwrite64 failed: Invalid argument
mkfs.xfs: read failed: Invalid argument
---(end)
A valid xfs filesystem is not written to disk, despite the output
describing the resulting filesystem characteristics.
Specifying '-s size=4096' results in a valid filesystem, and this
output:
---(begin)
meta-data=/dev/dasdd1 isize=256 agcount=8, agsize=75102
blks
= sectsz=4096 attr=0
data = bsize=4096 blocks=600816, imaxpct=25
= sunit=0 swidth=0 blks, unwritten=1
naming =version 2 bsize=4096
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=4096 sunit=1 blks
realtime =none extsz=4096 blocks=0, rtextents=0
---(end)
If I attempt to create the filesystem on the non-partitioned disk device
(/dev/dasdd) rather than the partitioned disk device (/dev/dasdd1), I
get the same output as above (no errors), but the device is unmountable.
I would second Mark Post's suggestion that a whole-disk partition be
created with 'fdasd -a' and the filesystem be created on that device
instead (/dev/dasdj1).
ok
r.
> -----Original Message-----
> From: Fargusson.Alan [mailto:[EMAIL PROTECTED]
> Sent: Friday, March 14, 2008 10:54 AM
> To: [email protected]
> Subject: Re: Using xfs file sys
>
> I don't think the DASD driver supports setting the sector
> size. Try without the "-s size=4096". The device is
> probably formatted in 4096 byte blocks anyway.
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED]
> Behalf Of Dott, Robert
> Sent: Friday, March 14, 2008 10:38 AM
> To: [email protected]
> Subject: Using xfs file sys
>
>
> We are trying to evaluate XFS performance, but cannot get the
> mkfs to make a xfs filesys. We are sles9 sp3 and when we try
> to do the mkfs command get the following:
>
> mkfs -t xfs -s size=4096 /dev/dasdj
> mkfs.xfs: warning - cannot set blocksize on block device /dev/dasdj:
> Invalid argument
> meta-data=/dev/dasdj isize=256 agcount=8, agsize=70605 blks =
> sectsz=4096 data = bsize=4096 blocks=564840, imaxpct=25 =
> sunit=0 swidth=0 blks, unwritten=1 naming =version 2
> bsize=4096 log =internal log bsize=4096 blocks=2560,
> version=2 = sectsz=4096 sunit=1 blks realtime =none
> extsz=65536 blocks=0, rtextents=0
>
> any suggestions appreciated.
>
> thanks,
> bob
>
> Bob Dott
> AIT Technical Support
> Application Hosting
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> (502)-560-2908
>
>
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