From: christophe varoqui <christophe.varoqui@free.fr>
To: device-mapper development <dm-devel@redhat.com>
Cc: Lars Marowsky-Bree <lmb@suse.de>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: [dm-devel] [multipath] SCSI device capacity mess
Date: Sat, 30 Oct 2004 10:22:43 +0200 [thread overview]
Message-ID: <1099124563.27274.50.camel@zezette> (raw)
In-Reply-To: <1099120870.27274.37.camel@zezette>
> > Plus, we only call sd_spinup_disk() during discovery and not on open,
> > unlike the calls to sd_media_changed().
> >
> Would it be workable to add a scsi_devinfo flag for devices with ghosts.
> If this flag is set and state is down, open calls sd_media_changed().
> The multipath-tools and device-mapper will try as hard as possible to
> avoid opening those device if not necessary, by grouping them in a low
> priority path group.
>
In fact the NOSTARTONADD flag seems just used for devices with ghosts
paths. So we could extend its logic : no start on add, but start on IO
is state is down.
SG_IO should not activate the path though, for the path checker not to
activate it.
regards,
--
christophe varoqui <christophe.varoqui@free.fr>
next prev parent reply other threads:[~2004-10-30 8:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-26 23:27 [multipath] SCSI device capacity mess christophe varoqui
2004-10-26 21:34 ` James Bottomley
2004-10-26 21:46 ` christophe varoqui
2004-10-27 8:17 ` [dm-devel] " Lars Marowsky-Bree
2004-10-27 8:42 ` Lars Marowsky-Bree
2004-10-27 18:51 ` Bryan Henderson
2004-10-29 14:12 ` Lars Marowsky-Bree
2004-10-29 16:48 ` Bryan Henderson
2004-10-27 19:02 ` christophe varoqui
2004-10-27 19:37 ` Eddie Williams
2004-10-27 20:19 ` christophe varoqui
2004-10-27 20:34 ` Greg Freemyer
2004-10-27 20:28 ` Philip R Auld
2004-10-27 21:57 ` James Bottomley
2004-10-28 11:37 ` Lars Marowsky-Bree
2004-10-28 18:14 ` Patrick Mansfield
2004-10-28 18:21 ` Lars Marowsky-Bree
2004-10-30 0:41 ` Patrick Mansfield
2004-10-30 1:01 ` Patrick Mansfield
2004-10-30 7:21 ` christophe varoqui
2004-10-30 8:22 ` christophe varoqui [this message]
2004-11-02 15:23 ` Lars Marowsky-Bree
2004-10-28 11:35 ` Lars Marowsky-Bree
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