linux-kernel - [RFC PATCH 0/2] block: Allow extending partition size online

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu,  1 Sep 2011 17:55:26 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	linux-kernel@...r.kernel.org, jaxboe@...ionio.com,
	dm-devel@...hat.com
Cc:	kzak@...hat.com, vgoyal@...hat.com
Subject: [RFC PATCH 0/2] block: Allow extending partition size online

Hi,

This is a patch to allow extending the partition size online. There are two
patches in the series. One is kernel patch and other is util-linux patch
to add another command "extendpart".

Kernel patch adds another ioctl to increase the size of partition even when
partition is in use. Currently limitation is that after modification to 
partition table, one needs to reboot the system/stop using the partition
before size changes become visible. It would be nice to allow changing
the size online, hence this change.

This ioctl changes only kernel view of data structures and does not
touch ondisk data structures. So right way to expand the partition
table would be to fist modify on disk copy using fdisk or so and then
extend partition in kernel so that kernel's table and ondisk table
are in sync.

Any feedback is welcome.

Thanks
Vivek
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/