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3907
AIX :: change adapter settings online
Hi All,
i have the following challange; let me first explain what i can do, and what i want to do.
we have two fibre adapter, fcs0 and fcs1, both have 192 paths;
# powermt display
Symmetrix logical device count=96
CLARiiON logical device count=0
Hitachi logical device count=0
HP xp logical device count=0
Ess logical device count=0
Invista logical device count=0
==============================================================================
----- Host Bus Adapters --------- ------ I/O Paths ----- ------ Stats ------
### HW Path Summary Total Dead IO/Sec Q-IOs Errors
==============================================================================
0 fscsi1 optimal 192 0 - 0 0
1 fscsi0 optimal 192 0 - 0 0
We now need to change settings on the fcs0 and fcs1 adapters (setting is tme). For one of these adapters this is relatively easy, since the hdiskpowerxx devices are not attached to it:
# lsdev -C | grep fcs
fcs0 Available 04-00 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs1 Available 02-00 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
# lsdev -C | grep 04-00 | grep hdiskpower <-- shows all the hdiskpowers
# lsdev -C | grep 02-00 | grep hdiskpower <-- shows no hdiskpowers
So, we can disable hba=0
# powermt disable hba=0 dev=all
fscsi1 is now failed, with all paths dead.
# rmdev -Rl fcs1
Now all devices are on Defined, and i can change the device fcs1 and fscsi1, afterwards i run
# cfgmgr
# powermt enable hba=0 dev=all
And all paths are available again.
So far the easy part, now the challange; All hdiskpowerxx devices are mapped to fcs0 (lsdev -C | grep 04-00 | grep hdiskpower). I can disable this hba, but these devices stay on this HBA.
If i now do
# powermt remove hba=1
The devices get moved to the other HBA, and i can do the things i need on the fcs0 device... however i can not get this device back under powerpath control (without rebooting).
Things i tried;
powermt save, remove the hba, do the changes, powermt load -> errors, not working
powermt check force -> removes the dead paths and the hba, however the hdiskpowerxx devices stay on this adapter.
Thanks for reading so far :-) If you need more info let me know
ooh yeah, versions;
Vios 2.2.2.2 (AIX 6.1 TL8 SP2)
Powermt 5.5 P 06 (build 4)
Mike_van_Hoof
2 Posts
0
May 7th, 2014 01:00
Hi all, for now it seems you do not need to use "powermt disable" before "powermt remove".
So;
# powermt remove hba=0
# rmdev -Rl fcs0
fcnet0 Defined
sfwcomm0 Defined
hdisk2 Defined
….
fscsi0 Defined
fcs0 Defined
# cfgmgr
# powermt config