From: James Bottomley <jbottomley@parallels.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Mike Christie <michaelc@cs.wisc.edu>,
Hannes Reinecke <hare@suse.de>, Chanho Min <chanho.min@lge.com>,
Joe Lawrence <jdl1291@gmail.com>,
linux-scsi <linux-scsi@vger.kernel.org>,
David Milburn <dmilburn@redhat.com>, Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v12 3/6] Restrict device state changes allowed via sysfs
Date: Mon, 1 Jul 2013 14:51:03 +0000 [thread overview]
Message-ID: <1372690263.2385.21.camel@dabdike> (raw)
In-Reply-To: <51CC522A.4010805@acm.org>
On Thu, 2013-06-27 at 16:54 +0200, Bart Van Assche wrote:
> Restrict the SCSI device state changes allowd via sysfs to the
> OFFLINE<>RUNNING transitions. Other transitions may confuse
> the SCSI mid-layer. As an example, changing the state of a SCSI
> device via sysfs into "cancel" or "deleted" prevents removal of
> a SCSI device by scsi_remove_host().
This one's not ready for application. I would like a debate on what we
should be doing. Currently we don't apply any sanity checking at all.
Should we? And should we police user state changes. If so, What
changes should we allow? I opine that really only OFFLINE <-> RUNNING
make sense, but I've no idea what people actually use this field for (if
they use it at all).
James
next prev parent reply other threads:[~2013-07-01 14:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 14:51 [PATCH v12 0/6] SCSI device removal fixes Bart Van Assche
2013-06-27 14:52 ` [PATCH v12 1/6] Fix race between starved list and device removal Bart Van Assche
2013-06-27 14:53 ` [PATCH v12 2/6] Avoid calling __scsi_remove_device() twice Bart Van Assche
2013-07-01 7:05 ` James Bottomley
2013-07-01 7:14 ` Bart Van Assche
2013-07-01 14:38 ` James Bottomley
2013-06-27 14:54 ` [PATCH v12 3/6] Restrict device state changes allowed via sysfs Bart Van Assche
2013-07-01 8:23 ` Hannes Reinecke
2013-07-01 14:51 ` James Bottomley [this message]
2013-06-27 14:55 ` [PATCH v12 4/6] Avoid saving/restoring interrupt state inside scsi_remove_host() Bart Van Assche
2013-06-27 14:56 ` [PATCH v12 5/6] Avoid that scsi_device_set_state() triggers a race Bart Van Assche
2013-07-01 14:49 ` James Bottomley
2013-07-01 15:17 ` Bart Van Assche
2013-07-01 16:52 ` James Bottomley
2013-07-02 6:42 ` Bart Van Assche
2013-06-27 14:57 ` [PATCH v12 6/6] Avoid re-enabling I/O after the transport became offline Bart Van Assche
2013-07-01 8:27 ` Hannes Reinecke
2013-07-01 12:05 ` Bart Van Assche
2013-07-01 12:09 ` Hannes Reinecke
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