From: James Bottomley <James.Bottomley@SteelEye.com>
To: christophe varoqui <christophe.varoqui@free.fr>
Cc: device-mapper development <dm-devel@redhat.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: [dm-devel] [multipath] SCSI device capacity mess
Date: 27 Oct 2004 17:57:21 -0400 [thread overview]
Message-ID: <1098914250.1588.1.camel@mulgrave> (raw)
In-Reply-To: <1098903759.12464.32.camel@zezette>
On Wed, 2004-10-27 at 15:02, christophe varoqui wrote:
> I wonder if it's not simpler just to remove the NOSTARTONADD flag on
> this devices in scsi_devinfo.c. I tested that and all the READ CAPACITY
> succeed as expected (DEC HSG80 / COMPAQ HSV*).
>
> Wasn't this flag in part motivated by the lack of multipath support
> anyway ?
>
> Even in a cluster context, I don't really buy the annoyance of
> occasional LUN ping-pong.
It's not occasional, it happens every time a single machine in the
cluster reboots and the HSG80 can take a while to transfer luns.
Configure one with several hundred luns in a 32 node cluster and you'll
see why this flag exists...
James
next prev parent reply other threads:[~2004-10-27 21:57 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 [this message]
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
2004-11-02 15:23 ` Lars Marowsky-Bree
2004-10-28 11:35 ` Lars Marowsky-Bree
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