* Missing path
@ 2008-03-11 13:53 Domenico Viggiani
2008-03-11 14:10 ` Simone Gotti
2008-03-11 14:15 ` Chandra Seetharaman
0 siblings, 2 replies; 4+ messages in thread
From: Domenico Viggiani @ 2008-03-11 13:53 UTC (permalink / raw)
To: 'device-mapper development'
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?
Thanks in advance
--
Domenico Viggiani
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Missing path
2008-03-11 13:53 Missing path Domenico Viggiani
@ 2008-03-11 14:10 ` Simone Gotti
2008-03-11 14:24 ` Domenico Viggiani
2008-03-11 14:15 ` Chandra Seetharaman
1 sibling, 1 reply; 4+ messages in thread
From: Simone Gotti @ 2008-03-11 14:10 UTC (permalink / raw)
To: device-mapper development
[-- Attachment #1.1: Type: text/plain, Size: 1928 bytes --]
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
[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
[-- Attachment #2: Type: text/plain, Size: 0 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Missing path
2008-03-11 13:53 Missing path Domenico Viggiani
2008-03-11 14:10 ` Simone Gotti
@ 2008-03-11 14:15 ` Chandra Seetharaman
1 sibling, 0 replies; 4+ messages in thread
From: Chandra Seetharaman @ 2008-03-11 14:15 UTC (permalink / raw)
To: device-mapper development
On Tue, 2008-03-11 at 14:53 +0100, Domenico Viggiani wrote:
That is weird. Any other error messages in /var/log/messages ?
Anyways, you can try this
echo - - - > /sys/class/scsi_host/host0/scan
chandra
> 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?
>
> Thanks in advance
--
----------------------------------------------------------------------
Chandra Seetharaman | Be careful what you choose....
- sekharan@us.ibm.com | .......you may get it.
----------------------------------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: Missing path
2008-03-11 14:10 ` Simone Gotti
@ 2008-03-11 14:24 ` Domenico Viggiani
0 siblings, 0 replies; 4+ messages in thread
From: Domenico Viggiani @ 2008-03-11 14:24 UTC (permalink / raw)
To: 'device-mapper development'
> From: dm-devel-bounces@redhat.com
> [mailto:dm-devel-bounces@redhat.com] On Behalf Of Simone Gotti
> Sent: Tuesday, March 11, 2008 3:11 PM
>
> 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.
It's the second time that this list saves me (first one was the infamous
issue with /var/lib/multipath/bindings file under a different filesystem
from /).
I hope to be able to return someday.
Thanks thanks thanks
--
Domenico Viggiani
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2008-03-11 14:24 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-03-11 13:53 Missing path Domenico Viggiani
2008-03-11 14:10 ` Simone Gotti
2008-03-11 14:24 ` Domenico Viggiani
2008-03-11 14:15 ` Chandra Seetharaman
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.