VERITAS DMP : DMP path failures

VERITAS DMP : DMP path failures

Post by stef » Sat, 15 Nov 2003 16:58:47



Hello

We are running the following configuration

SF4800
Solaris 8
VRTSvxfs 3.4,REV=GA03
VRTSvxvm 3.1.1,REV=01.30.2001.22.21

The system is connected with two paths to the Storage Area Network
and we enabled VERITAS DMP in order to use the two paths.

The system has been in service for at least two years without any
problems.

Now we got the following messages in /var/adm/messages :

(..)

Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

Nov 13 13:58:14 sun31   offline
Nov 13 13:58:14 sun31 vxdmp: [ID 619769 kern.notice] NOTICE: vxdmp:
Path failure on 32/0x2c14
Nov 13 13:58:14 sun31 vxdmp: [ID 997040 kern.notice] NOTICE:
vxvm:vxdmp: disabled path 32/0x2c10 belonging to the dmpnode 227/0x3f0
Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

Nov 13 13:58:14 sun31   transport rejected (-2)
Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

Nov 13 13:58:14 sun31   offline
Nov 13 13:58:14 sun31 vxdmp: [ID 619769 kern.notice] NOTICE: vxdmp:
Path failure on 32/0x2c2c
Nov 13 13:58:14 sun31 vxdmp: [ID 997040 kern.notice] NOTICE:
vxvm:vxdmp: disabled path 32/0x2c28 belonging to the dmpnode 227/0x408

(..)

As there are so many entries at the same time stamps, I
do not see which one of a LUN's two SAN - paths actually was
temporarely
interrupted.

# format

(..)  

     205. c4t13d86 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

     206. c4t13d87 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

     207. c4t13d88 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

     208. c4t13d89 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

(..)

Question :

How can I figure out the name of the LUN (e.g. c4t13d87 )unter
<format>
which has lost one of its two DMP-paths according the messages

<vxvm:vxdmp: disabled path 32/0x2c28 belonging to the dmpnode
227/0x408>

?

I thank you for your efforts

Stefan Schmid

 
 
 

VERITAS DMP : DMP path failures

Post by Barton Fis » Mon, 17 Nov 2003 05:17:13



> Hello

> We are running the following configuration

> SF4800
> Solaris 8
> VRTSvxfs 3.4,REV=GA03
> VRTSvxvm 3.1.1,REV=01.30.2001.22.21

> The system is connected with two paths to the Storage Area Network
> and we enabled VERITAS DMP in order to use the two paths.

> The system has been in service for at least two years without any
> problems.

> Now we got the following messages in /var/adm/messages :

> (..)

> Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

> Nov 13 13:58:14 sun31      offline
> Nov 13 13:58:14 sun31 vxdmp: [ID 619769 kern.notice] NOTICE: vxdmp:
> Path failure on 32/0x2c14
> Nov 13 13:58:14 sun31 vxdmp: [ID 997040 kern.notice] NOTICE:
> vxvm:vxdmp: disabled path 32/0x2c10 belonging to the dmpnode 227/0x3f0
> Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

> Nov 13 13:58:14 sun31      transport rejected (-2)
> Nov 13 13:58:14 sun31 scsi: [ID 107833 kern.warning] WARNING:

> Nov 13 13:58:14 sun31      offline
> Nov 13 13:58:14 sun31 vxdmp: [ID 619769 kern.notice] NOTICE: vxdmp:
> Path failure on 32/0x2c2c
> Nov 13 13:58:14 sun31 vxdmp: [ID 997040 kern.notice] NOTICE:
> vxvm:vxdmp: disabled path 32/0x2c28 belonging to the dmpnode 227/0x408

> (..)

> As there are so many entries at the same time stamps, I
> do not see which one of a LUN's two SAN - paths actually was
> temporarely
> interrupted.

> # format

> (..)

>      205. c4t13d86 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

>      206. c4t13d87 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

>      207. c4t13d88 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

>      208. c4t13d89 <HITACHI OPEN-9 cyl 10014 alt 2 hd 15 sec 96>

> (..)

> Question :

> How can I figure out the name of the LUN (e.g. c4t13d87 )unter
> <format>
> which has lost one of its two DMP-paths according the messages

> <vxvm:vxdmp: disabled path 32/0x2c28 belonging to the dmpnode
> 227/0x408>

Use the Veritas command vxdmpadm,

vxdmpadm listctlr all
vxdmpadm getsubpaths ctlr=<controller#> ie. c1

might prove useful. man vxdmpadm for further options.

--
Barton Fisk, SCNA SCSA

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