From: Simone Gotti <simone.gotti@email.it>
To: device-mapper development <dm-devel@redhat.com>
Subject: Re: Missing path
Date: Tue, 11 Mar 2008 15:10:42 +0100 [thread overview]
Message-ID: <1205244642.3123.31.camel@localhost> (raw)
In-Reply-To: <000501c8837f$53f835c0$cf42e3c1@pitagora.it>
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Hi,
On Tue, 2008-03-11 at 14:53 +0100, Domenico Viggiani wrote:
> After adding a LUN from a EMC Clariion CX700 to a system with already many
> of these, I noticed that multipath doesn't see a path:
>
> 360060160eb241700284f88a159efdc11
> [size=450 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
> \_ round-robin 0 [prio=1][enabled]
> \_ 1:0:0:70 sdbo 68:32 [active][ready]
> \_ round-robin 0 [enabled]
> \_ 0:0:3:70 sdbn 68:16 [active][ready]
> \_ 1:0:1:70 sdbp 68:48 [active][ready]
>
> >From SCSI layer, it is OK:
>
> Host: scsi0 Channel: 00 Id: 02 Lun: 70
> Vendor: DGC Model: RAID 5 Rev: 0219
> Type: Direct-Access ANSI SCSI revision: 04
> Host: scsi0 Channel: 00 Id: 03 Lun: 70
> Vendor: DGC Model: RAID 5 Rev: 0219
> Type: Direct-Access ANSI SCSI revision: 04
> Host: scsi1 Channel: 00 Id: 00 Lun: 70
> Vendor: DGC Model: RAID 5 Rev: 0219
> Type: Direct-Access ANSI SCSI revision: 04
> Host: scsi1 Channel: 00 Id: 01 Lun: 70
> Vendor: DGC Model: RAID 5 Rev: 0219
> Type: Direct-Access ANSI SCSI revision: 04
>
> but one device is missing under /dev:
>
> brw-rw---- 1 root disk 68, 16 Mar 11 14:44 /dev/sdbn
> brw-rw---- 1 root disk 68, 32 Mar 11 14:45 /dev/sdbo
> brw-rw---- 1 root disk 68, 48 Mar 11 14:45 /dev/sdbp
>
> How can I fix this?
In RHEL4 until U5 there was a bug which caused the device with
major:minor=68:0 to be missing due to a too strong wrong udev rule for
capi devices:
https://bugzilla.redhat.com/show_bug.cgi?id=234170
duplicate of
https://bugzilla.redhat.com/show_bug.cgi?id=202792
http://rhn.redhat.com/errata/RHBA-2007-0784.html
Looking at your device names looks like the same.
I hope this helps.
Bye!
>
> Thanks in advance
--
Simone Gotti
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next prev parent reply other threads:[~2008-03-11 14:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-11 13:53 Missing path Domenico Viggiani
2008-03-11 14:10 ` Simone Gotti [this message]
2008-03-11 14:24 ` Domenico Viggiani
2008-03-11 14:15 ` Chandra Seetharaman
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