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Create new MPIO parent
- Thread starter Chapter11
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What type of LUNs? What vendor? I'm guessing you need to install (an) additional fileset(s) in order for the MPIO driver to recognize both hdisk devices as paths to the same LUN.
Native AIX MPIO's AIXPCM (a general purpose path control module) can't recognize all hdisk devices for all possible LUNs from all possible SAN vendors, so sometimes you need to install a PCM which is specific to your SAN vendor (or even your specific vendor's type/model of SAN server) in order to use MPIO as multi path driver.
Check your vendor's website for support for AIX MPIO...
HTH,
p5wizard
Native AIX MPIO's AIXPCM (a general purpose path control module) can't recognize all hdisk devices for all possible LUNs from all possible SAN vendors, so sometimes you need to install a PCM which is specific to your SAN vendor (or even your specific vendor's type/model of SAN server) in order to use MPIO as multi path driver.
Check your vendor's website for support for AIX MPIO...
HTH,
p5wizard
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- #4
It's actually the backend of a VIO server that I'm trying to get fixed.
We have two P5-570s, attached to the same EMC SAN.
When we got the first, the VIO server version we had at the time didn't recognize multiple paths.
The second unit (obtained months later) came with a later version of VIO, that recognized multiple paths out of the box.
We've since upgraded the first unit to a VIO version even later than the VIO that's on the second unit, but it still does not recognize multiple paths.
The weirder thing about it is that the VIOs on the first unit even have some EMC fileset installed, while the second does not.
We have two P5-570s, attached to the same EMC SAN.
When we got the first, the VIO server version we had at the time didn't recognize multiple paths.
The second unit (obtained months later) came with a later version of VIO, that recognized multiple paths out of the box.
We've since upgraded the first unit to a VIO version even later than the VIO that's on the second unit, but it still does not recognize multiple paths.
The weirder thing about it is that the VIOs on the first unit even have some EMC fileset installed, while the second does not.
Well, do you have the MPIO driver installed on that older VIO server? If not, then you'll need to plan some downtime because I think you'll have to remove all target devices and disks first, install MPIO driver, rediscover all disks as MPIO disks, re-serve the disks as target devices...
HTH,
p5wizard
HTH,
p5wizard
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