PowerPath does not pring the second path up after failover

Hi.  Are you connected to a CLARiiON?  What failover mode did you configure for the host?

Thanks, Brion

Hi Brion,

Its connected to SYM , am using fast fail.

Thnx.

What version of PP?  What version of AIX?  Can you detail your exact steps and provide output of the "powermt display?"

Thanks, Brion

PP 5.3 , AIX 5.3. we removed the cable from HBA0 then wait few second , plug it again , powermt display shows dead paths , plugging the cables back does not bring up the path automatically ,you should run powermt config..

Hi.  What is the output of the "powermt display options" command?

Powerpath should bring the dead path back to alive after the issue is corrected (cable pluged back).

This may take some time, PP rescans the paths times in times. In order to force a rescan of the path you can run a "powermt restore", so PP will rescan the path right away.

I hope it helps. 

"Degraded"  ..

i will try the restore one and update you back , thanks

Attempting to manually restore using the "powermt restore" command is a good idea because PowerPath restores dead paths automatically based on the results of path testing.  PowerPath path testing is given a lower priority than application I/O.  If the system is busy, it may take longer for a path to be automatically restored.  Also, the output of the "powermt display options" should show whether or not the periodic autorestore is on or off.  If it is off, the path will not automatically restore.

Try:  "powermt display options"

You should see an output similar to this:

powermt display options:

Default storage system class: all

Show CLARiiON LUN names: true

Path Latency Monitor: On

Path Latency Threshold: 1 Sec.

Storage

System Class Attributes

------------ ----------

Symmetrix periodic autorestore = on

status = managed

CLARiiON periodic autorestore = on

status = managed

Hitachi periodic autorestore = on

status = managed

Invista periodic autorestore = on

status = managed

HP xp periodic autorestore = on

status = managed

Ess periodic autorestore = on

status = managed

Hi Brion,

Where can I find the mentioned autorestore ? I do not have an access to that machine now , but am trying to run powermt display on windows one with the below results ;

C:\Documents and Settings\yousef>powermt display

Symmetrix logical device count=20

CLARiiON logical device count=0

Generic logical device count=0

Hitachi logical device count=0

Invista logical device count=0

HP xp logical device count=0

Ess logical device count=0

HP HSx logical device count=0

==============================================================================

i can't find anything related to autorestore ?

Hello,

  The product guide is available on powerlink at (menu options)

Home > Support > Technical Documentation and Advisories > Software ~ P-R ~ Documentation > PowerPath Family > PowerPath > General Reference

http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-006-627.pdf?mtcs=ZXZlbnRUeXBlPUttQ2xpY2tDb250ZW50RXZlbnQsZG9jdW1lbnRJZD0wOTAxNDA2NjgwNTVhZDBjLG5hdmVOb2RlPVNvZndhcmVEb3dubG9hZHMtMg__

It should help with all your queries.

Hope this helps,

   Nollaig