From: Karel Zak <kzak@redhat.com>
To: Bertrand Jacquin <beber@meleeweb.net>
Cc: util-linux@vger.kernel.org
Subject: Re: sfdisk 2.20.1 --no-reread do BLKRRPART
Date: Mon, 20 May 2013 13:15:23 +0200 [thread overview]
Message-ID: <20130520111523.GB19935@x2.net.home> (raw)
In-Reply-To: <20120216201617.GD7482@lemonhead.scabb>
Sorry for the delay :-)
On Thu, Feb 16, 2012 at 09:16:18PM +0100, Bertrand Jacquin wrote:
> When creating partitions on a destination that is not a block device,
> sfdisk do a BLKRRPART ioctl even when --no-reread option is used, but
> looking at documentation --no-reread only apply to the beginning
> process.
>
> Would it be fine to extend that to the complete process ?
Not sure, but I think it should be enough to don't call BLKRRPART
ioctl for non-block devices.
> dd if=/dev/zero of=/tmp/disk.img bs=1024 count=4032
> strace -fF -s 1024 -e trace=ioctl \
> sfdisk --no-reread -C2 -H32 -S63 -q -f \
> /tmp/disk.img << EOF
> unit: sectors
>
> part1 : start= 63, size= 3969, Id=83
> part2 : start= 4032, size= 98784, Id=83
> part3 : start= 102816, size= 22176, Id=83
> part4 : start= 124992, size= 0, Id=83
> EOF
...
> Re-reading the partition table ...
> ioctl(3, BLKRRPART, 0) = -1 ENOTTY (Inappropriate ioctl for device)
> BLKRRPART: Inappropriate ioctl for device
This use case (disk images partitioning) should be fixed in the git
tree.
Thanks!
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
next prev parent reply other threads:[~2013-05-20 11:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-16 20:16 sfdisk 2.20.1 --no-reread do BLKRRPART Bertrand Jacquin
2013-05-20 11:15 ` Karel Zak [this message]
2013-05-21 13:35 ` Bertrand Jacquin
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