we have a vew boxes using MPIO and they are connected to some virtualization software managing some disk subsystems, offering volumes to the AIX boxes.
Sometimes when a cable has been plugged out for a test or when a real problem occurs, using lspath to show the state of the paths shows correct, that for example 1 path is failed, the other enabled. When the cable is plugged back in again or the problem has been recovered, that path still shows that it is failed. Even waiting some time, this will not recover. No matter what we tried will change that but a reboot of the box. I do not remember exactly if the path being shown as "failed" did still work (I thought I issued a fcstat and there was bytes counting up, not sure though, too long ago) even though the lspath showed.
Did anybody have had any similar experience with MPIO? We thought that since MPIO is some years on the market now, that an obvious problem like not updating the status of a path should be obsolete. So we came to the conclusion that it might be some kind of incompability with our virtualization software.
I never saw something like it on a box using Powerpath.
Additionally, this problem does not happen every time and not on all of the MPIO boxes.
Our boxes are running AIX 5.3 TL11 SP4.
Any hints are welcome.
---------- Post updated at 09:08 AM ---------- Previous update was at 08:54 AM ----------
Here the config of a path from a box that had no problem so far - the other boxes have same parameters for health check etc.:
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ioslevel 2.1.3.10-FP23
# oslevel -s
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For example server1
/ > lspv
hdisk0 00fa6d1288c820aa rootvg active
hdisk1 00fa6d1288c8213c vg_2 active
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