linux-kernel - Re: [REGRESSION] 8a3e33cf92c7 "ata: ahci: find eSATA ports and flag them as removable" changes userspace behavior

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Message-ID: <CAOLZvyEheaW128Yw7MNqZHjOERry0-v=46kXKbazNE3Oha=-Mw@mail.gmail.com>
Date:	Thu, 25 Feb 2016 19:56:49 +0100
From:	Manuel Lauss <manuel.lauss@...il.com>
To:	Laura Abbott <labbott@...hat.com>
Cc:	Tejun Heo <tj@...nel.org>, Linux-IDE <linux-ide@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] 8a3e33cf92c7 "ata: ahci: find eSATA ports and flag
 them as removable" changes userspace behavior

On Thu, Feb 25, 2016 at 6:12 PM, Laura Abbott <labbott@...hat.com> wrote:
> Hi,
>
> We received a bugzilla report
> https://bugzilla.redhat.com/show_bug.cgi?id=1310682
> of partitions being automounted unexpectedly. Testing showed that
> 8a3e33cf92c7 ("ata: ahci: find eSATA ports and flag them as removable") was
> responsible.
> This seems to be classified as 'breaking' userspace given that this behavior
> results
> in partitions that were previously unmounted now being being mounted
> unwanted
> automatically which is unwanted behavior for the user. Can we revert this
> patch or
> give a fix to change this behavior?

Do the affected users have sata ports set to hotplug capable? Because that's
what the patch does: it flags ports which have the hotplug capability enabled
as "removable", and I guess redhat just automounts anything that is flagged
as a removable disk (like an usb drive).

Manuel