linux-kernel - Re: [PATCH] scsi: sd: Keep disk read-only when re-reading partition

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Message-ID: <20180302120038.4mgcn2lmft4ygqz4@linux-x5ow.site>
Date:   Fri, 2 Mar 2018 13:00:38 +0100
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     Jeremy Cline <jeremy@...ine.org>
Cc:     "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: sd: Keep disk read-only when re-reading partition

On Thu, Mar 01, 2018 at 02:08:10PM +0000, Jeremy Cline wrote:
> If the read-only flag is true on a SCSI disk, re-reading the partition
> table sets the flag back to false.
> 
> To observe this bug, you can run:
> 
> 1. blockdev --setro /dev/sda
> 2. blockdev --rereadpt /dev/sda
> 3. blockdev --getro /dev/sda

hi Jeremy,

Do you mind wiring up a testcase in blktest [1] for this? Given that
you already have a rather trivial reproducer.

[1] https://github.com/osandov/

Thanks,
	Johannes

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Johannes Thumshirn                                          Storage
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