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mkfs.xfs destoroys sun disklabel

To: linux-xfs@xxxxxxxxxxx
Subject: mkfs.xfs destoroys sun disklabel
From: Matsuo Hiroshi <matsuo@xxxxxxxxxxxxxxxxxx>
Date: Thu, 31 Oct 2002 12:13:18 +0900
Sender: linux-xfs-bounce@xxxxxxxxxxx
Hi,

I have linux-2.4.19 with xfs-1.2pre2 running on sparc (sun4m).
I've found a problem about mkfx.xfs included in xfsprogs-2.3.5. 

If harddisk has only one partition, mkfx.xfs destoroy its disklabel.


Hiroshi Matsuo <matsuo@xxxxxxxxxxxxxxxxxx>

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# fdisk /dev/sdb

Command (m for help): p

Disk /dev/sdb (Sun disk label): 19 heads, 80 sectors, 2733 cylinders
Units = cylinders of 1520 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
/dev/sdb1             0      2733   2077080   83  Linux native
/dev/sdb3             0      2733   2077080    5  Whole disk

Command (m for help): q

# mkfs.xfs -f /dev/sdb1
meta-data=/dev/sdb1              isize=256    agcount=8, agsize=64909
blks
data     =                       bsize=4096   blocks=519270,
imaxpct=25
         =                       sunit=0      swidth=0 blks,
unwritten=0
naming   =version 2              bsize=4096  
log      =internal log           bsize=4096   blocks=1200, version=1
         =                       sunit=0 blks
realtime =none                   extsz=65536  blocks=0, rtextents=0

# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or
OSF disklabel
Building a new sun disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
  .
  .
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  .

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