linux-kernel - Re: [PATCH 0/6] detect online disk resize

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Message-ID: <x49prnett3p.fsf@segfault.boston.devel.redhat.com>
Date:	Mon, 08 Sep 2008 14:01:14 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Andrew Patterson <andrew.patterson@...com>
Cc:	linux-scsi@...r.kernel.org, James.Bottomley@...senPartnership.com,
	linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk,
	axboe@...nel.dk, andmike@...ux.vnet.ibm.com, mike.miller@...com,
	genanr@...phone.com
Subject: Re: [PATCH 0/6] detect online disk resize

Andrew Patterson <andrew.patterson@...com> writes:

> This is version 2 of a patch series I submitted back in May 2008. This
> version now checks for device size changes in the rescan_partitions()
> routine.  Which in turn is called when a device is opened and in the
> BLKRRPART ioctl.
>
> I am resubmitting this patch series as I got little response the
> previous time.  Al Viro has told me offline that he would look at it this
> time.

[...]

> I have tested this patch on SCSI and SmartArray (cciss)
> devices. Device mapper still does not recognize device size changes
> until the device is restarted.
>
> Jeff Moyer and Andy Ryan have done some light testing on the previous
> version of this series.

I re-tested this new patch series using an iSCSI target via the
following steps:

1) Connect to iSCSI storage, creating the /dev/sd* devices.
2) Create a file system on the block device
3) Mount the file system, and leave a shell active on the mount point.
4) resize the iSCSI LUN
5) rescan the iSCSI session
6) resize the file system

This procedure worked fine.

Cheers,

Jeff
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