From: James Bottomley <jbottomley@parallels.com>
To: "Jörn Engel" <joern@logfs.org>
Cc: Hannes Reinecke <hare@suse.de>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
Ewan Milne <emilne@redhat.com>,
Ren Mingxin <renmx@cn.fujitsu.com>,
Bart van Assche <bvanassche@acm.org>
Subject: Re: [PATCHv2 0/7] Limit overall SCSI EH runtime
Date: Mon, 1 Jul 2013 19:23:25 +0000 [thread overview]
Message-ID: <1372706605.2385.37.camel@dabdike> (raw)
In-Reply-To: <20130701174423.GA10645@logfs.org>
On Mon, 2013-07-01 at 13:44 -0400, Jörn Engel wrote:
> If a single device is bad, don't ever do a host
> reset.
This isn't a tenable position. Sometimes a device looks bad because the
host state for it has gone insane. At that point, the only safe action
is a reset of the host to sane state.
I could be persuaded that you should never do the transport equivalent
of a bus reset (on non-SPI transports, at least), which is actually hard
to do on some of the modern transports, but I don't think you can get
away without having a host reset in the eh arsenal.
James
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next prev parent reply other threads:[~2013-07-01 19:23 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-01 6:50 [PATCHv2 0/7] Limit overall SCSI EH runtime Hannes Reinecke
2013-07-01 6:50 ` [PATCH 1/7] dpt_i2o: Remove DPTI_STATE_IOCTL Hannes Reinecke
2013-07-01 6:50 ` [PATCH 2/7] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in reset Hannes Reinecke
2013-07-01 6:50 ` [PATCH 3/7] advansys: Remove 'last_reset' references Hannes Reinecke
2013-07-01 6:50 ` [PATCH 4/7] tmscsim: Move 'last_reset' into host structure Hannes Reinecke
2013-07-01 6:50 ` [PATCH 5/7] dc395: Move 'last_reset' into internal " Hannes Reinecke
2013-07-01 6:50 ` [PATCH 6/7] scsi: remove check for 'resetting' Hannes Reinecke
2013-07-01 6:50 ` [PATCH 7/7] scsi: Add 'eh_deadline' to limit SCSI EH runtime Hannes Reinecke
2013-09-20 7:48 ` Ren Mingxin
2013-10-16 19:22 ` James Bottomley
2013-10-17 14:27 ` Ewan Milne
2013-10-23 9:25 ` Hannes Reinecke
2013-10-23 7:46 ` James Bottomley
2013-10-23 9:49 ` Hannes Reinecke
2013-07-01 17:44 ` [PATCHv2 0/7] Limit overall " Jörn Engel
2013-07-01 19:23 ` James Bottomley [this message]
2013-07-01 20:55 ` Jörn Engel
2013-07-02 5:48 ` Hannes Reinecke
2013-07-02 6:37 ` James Bottomley
2013-07-02 14:58 ` Jörn Engel
2013-07-02 16:33 ` James Bottomley
2013-07-02 15:50 ` Jörn Engel
2013-07-10 20:35 ` Ewan Milne
2013-07-12 5:54 ` Ren Mingxin
2013-07-12 13:30 ` Ewan Milne
2013-07-15 10:33 ` Ren Mingxin
2013-07-26 9:52 ` Ren Mingxin
2013-08-07 6:43 ` Ren Mingxin
2013-08-29 13:06 ` Hannes Reinecke
2013-09-24 20:51 ` Ric Wheeler
2013-09-25 5:48 ` Hannes Reinecke
2013-10-02 16:21 ` Hannes Reinecke
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