Unsolved
This post is more than 5 years old
7 Posts
0
1252
powerpath upgrade issue
Hi
I am running some DBs on a Solaris Sparc server with PowerPath .The DBs are on raw LUNs from a Clariion array . I had to do a upgrade of Powerpath from 5.3 to 5.5 .I followed the normal steps
Unistall the earlier version and Install the new version
But after installing 5.5 the emcpower pseudo devices mapping got changed. i.e the LUN with pseudo device name emcpower1a earlier is now showing emcpower2a .This has happened to all the LUNs Needless to say the databases and the filesystems on the LUNs have become inaccessible I tried to copy the original emcp.conf file but it gets regenerated with each reboot and changes the contents
I tried to manually change the pseudo device names to their correct device files using emcpadm renamepseudo commands after which the filesystems became accessible but these changes do not persist over the reboot
How can I now restore the original mappings
For the time being I have now started the servers with the alternate boot environment
Is this a expected behaviour
Is there any configuration backup should be taken before installing the new PP version which can then be imported back
Appreciate any insights and help regarding this
daverush
51 Posts
1
February 9th, 2015 10:00
rkk1969,
You'll need to issue a "powermt save" for your renamed mapping to persist past a reboot.
To answer your questions:
sgtserge1
15 Posts
1
March 5th, 2015 05:00
Hi rkk1969,
after configuring the right pseudodevices have you tried the command:
/etc/powermt save
Also there's a command to export the exsisting pseudodevice config:
/opt/EMCpower/bin/emcpadm export_mappings -f pseudodevices.cfg
This save the conf to file "pseudodevices.conf" that can be used with the "import" switch.
hope this helps.
Sergio