From mboxrd@z Thu Jan  1 00:00:00 1970
From: Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] add readonly overlay support for dmsquash
Date: Thu, 04 Mar 2010 14:07:49 +0100
Message-ID: <4B8FB0A5.2090309@redhat.com>
References: <1267195469-32522-1-git-send-email-jboggs@redhat.com> <20100226202326.GG8702@nb.net.home>
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To: Karel Zak <kzak-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Joey Boggs <jboggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

On 02/26/2010 09:23 PM, Karel Zak wrote:
> On Fri, Feb 26, 2010 at 09:44:29AM -0500, Joey Boggs wrote:
>>       # set up the snapshot
>> -    echo 0 `blockdev --getsize $BASE_LOOPDEV` snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create live-rw
>> +    echo 0 `blockdev --getsize $BASE_LOOPDEV` snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create $readonly_overlay live-rw
>                 ^^^^^^^^^^^^^^^^^
>
>   Don't use --getsize, this option is deprecated and it's based
>   on BLKGETSIZE ioctl that returns *32-bit* sector count (= 2TiB only).
>
>   Please, use --getsz. For more details see blockdev(8) man page.
>
>      Karel
>

patched to use --getsize64