From: Mike Christie <michaelc@cs.wisc.edu>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [PATCH] sd: do not set changed flag on all unit attention conditions
Date: Tue, 17 Jul 2012 12:45:00 -0600 [thread overview]
Message-ID: <5005B2AC.6020102@cs.wisc.edu> (raw)
In-Reply-To: <50059713.7090606@redhat.com>
On 07/17/2012 10:47 AM, Paolo Bonzini wrote:
> Il 17/07/2012 18:36, Christoph Hellwig ha scritto:
>>>> There's no such thing in the market today as a removable disk that's
>>>> resizeable. Removable disks are for things like backup cartridges and
>>>> ageing jazz drives. Worse: most removeable devices today are USB card
>>>> readers whose standards compliance varies from iffy to non existent.
>>>> Resizeable disks are currently the province of storage arrays.
>> The virtual disks exported by aacraid are both marked removable and
>> can be resized.
>
> Do they report resizing via unit attention? I can skip this part on
> removable virtio-scsi disks if that's what real hardware does, it would
> also work.
>
Not sure if we are talking about the same thing.
So can virtio-scsi send a UA with asc/ascq that indicates the lun
changed size? Other drivers do this. I updated Hannes's patches the
other day to support UAs like those in userspace.
I just saw the code in the patch where virtio-scsi gets that event.
next prev parent reply other threads:[~2012-07-17 18:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-16 16:06 [PATCH] sd: do not set changed flag on all unit attention conditions Paolo Bonzini
2012-07-16 16:18 ` James Bottomley
2012-07-16 17:20 ` Paolo Bonzini
2012-07-17 7:45 ` James Bottomley
2012-07-17 8:34 ` Paolo Bonzini
2012-07-17 8:40 ` James Bottomley
2012-07-17 8:54 ` Paolo Bonzini
2012-07-17 9:11 ` James Bottomley
2012-07-17 9:28 ` Paolo Bonzini
2012-07-17 12:21 ` James Bottomley
2012-07-17 12:31 ` Paolo Bonzini
2012-07-17 13:32 ` James Bottomley
2012-07-17 16:36 ` Christoph Hellwig
2012-07-17 16:47 ` Paolo Bonzini
2012-07-17 16:50 ` Christoph Hellwig
2012-07-17 18:45 ` Mike Christie [this message]
2012-07-17 18:49 ` Mike Christie
2012-07-17 21:12 ` Paolo Bonzini
2012-07-17 21:59 ` James Bottomley
2012-07-27 10:16 ` Hannes Reinecke
2012-07-27 10:16 ` Hannes Reinecke
2012-07-25 12:09 ` Hannes Reinecke
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