From: "Randy.Dunlap" <rddunlap@osdl.org>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Andy <genanr@emsphone.com>, linux-kernel@vger.kernel.org
Subject: Re: Rereading disk geometry without reboot
Date: Tue, 07 Dec 2004 07:16:58 -0800 [thread overview]
Message-ID: <41B5C96A.5060909@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.53.0412071240300.18630@yvahk01.tjqt.qr>
Jan Engelhardt wrote:
>>I am using linux kernel 2.6.9 on a san. I have file systems on
>
>
> (What's a SAN?)
>
>
>>non-partitioned disks. I can resize the disk on the SAN, reboot and grow
>>the XFS file system those disks. What I would like to avoid rebooting or
>>even unmounting the filesystem if possible.
>>
>>Is there any way to get the kernel to re-read the disk geometry and change
>>the information it holds without rebooting or reloading the module (which is
>>as bad as a reboot in my case)?
>
>
> The `fdisk` tool will spit out an ioctl() to make the kernel reread the
> partition table (on normal computers, don't know about or what SAN). No need to
> reboot there at least.
There's 'blockdev --rereadpt' also, but neither of these work
on a mounted filesystem afaik.
--
~Randy
next prev parent reply other threads:[~2004-12-07 15:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-06 20:23 Rereading disk geometry without reboot Andy
2004-12-07 11:41 ` Jan Engelhardt
2004-12-07 15:16 ` Randy.Dunlap [this message]
2004-12-07 17:23 ` Jan Engelhardt
2004-12-07 16:37 ` Mark Haverkamp
2004-12-09 15:45 ` Andy
2004-12-07 17:28 ` Robin Holt
2004-12-07 21:12 ` Miquel van Smoorenburg
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