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03-14-2012 06:16 AM
03-14-2012 06:16 AM
IOSCAN shows CLAIMED for unmaped disks from the server.
Hello everybody! LUNs from Clariion 700 are presented to the server with HP-UX 11.23. I have one little problem with unmapping disks. I make ioscan several times and restart NaviCli, but PowerPath shows: Logical device ID=60060160101916004DC59EB1DB8ADD11 state=alive; policy=CLAROpt; priority=0; queued-IOs=0 Owner: default=SP B, current=SP B ============================================================================== ---------------- Host --------------- - Stor - -- I/O Path - -- Stats --- ### HW Path I/O Paths Interf. Mode State Q-IOs Errors ============================================================================== 71 0/2/1/0.1.0.239.0.0.0 c71t0d0 SP B3 active dead 0 1 72 0/2/1/0.1.1.239.0.0.0 c72t0d0 SP A2 active dead 0 1 73 0/2/1/0.1.2.239.0.0.0 c73t0d0 SP B1 active dead 0 1 74 0/2/1/0.1.3.239.0.0.0 c74t0d0 SP A0 active dead 0 1 75 0/5/1/0.2.2.239.0.0.0 c75t0d0 SP B0 active dead 0 1 76 0/5/1/0.2.3.239.0.0.0 c76t0d0 SP A1 active dead 0 1 77 0/5/1/0.2.4.239.0.0.0 c77t0d0 SP B2 active dead 0 1 78 0/5/1/0.2.5.239.0.0.0 c78t0d0 SP A3 active dead 0 1 #ioscan -funCdisk disk 268 0/2/1/0.1.0.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c71t0d0 /dev/rdsk/c71t0d0 disk 282 0/2/1/0.1.1.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c72t0d0 /dev/rdsk/c72t0d0 disk 267 0/2/1/0.1.2.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c73t0d0 /dev/rdsk/c73t0d0 disk 283 0/2/1/0.1.3.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c74t0d0 /dev/rdsk/c74t0d0 disk 285 0/5/1/0.2.2.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c75t0d0 /dev/rdsk/c75t0d0 disk 286 0/5/1/0.2.3.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c76t0d0 /dev/rdsk/c76t0d0 disk 293 0/5/1/0.2.4.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c77t0d0 /dev/rdsk/c77t0d0 disk 272 0/5/1/0.2.5.239.0.0.0 sdisk CLAIMED DEVICE DGC CX700WDUNB /dev/dsk/c78t0d0 /dev/rdsk/c78t0d0 # diskinfo /dev/rdsk/c78t0d0 diskinfo: can't SIOC_INQUIRY /dev/rdsk/c78t0d0: I/O error What's wrong ?
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03-14-2012 07:59 AM
03-14-2012 07:59 AM
Re: IOSCAN shows CLAIMED for unmaped disks from the server.
Hope this helps!
Regards
Torsten.
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03-14-2012 08:17 AM
03-14-2012 08:17 AM
Re: IOSCAN shows CLAIMED for unmaped disks from the server.
PowerPath in HP-UX 11.23 doesn't create pseudo devicses
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03-14-2012 01:15 PM
03-14-2012 01:15 PM
Re: IOSCAN shows CLAIMED for unmaped disks from the server.
You're using the '-u' option in ioscan: it skips the actual hardware probe, so the results may not be accurate. Try without that option:
ioscan -fnCdisk
It may take somewhat longer, but it will give you the most up-to-date information.
In HP-UX 11.23 and older, I understand PowerPath essentially wedges itself somewhere in the middle of the HP-UX SCSI driver stack, causing the devices to automagically load-balance between all the available paths, sort of like what 11.31 does with legacy device nodes when the "leg_mpath_enable" is set to 1.
Since you know the paths are dead, you should follow EMC documented procedure for removing PowerPath-managed devices on HP-UX.
First remove the dead paths using their Hardware Paths:
rmsf -a -H 0/2/1/0.1.0.239.0.0.0 [...etc...]
Then run:
powermt check
PowerPath should tell you if it finds dead paths, and ask you if those devices should be removed.
Answering "y" or "a" (= yes to all) should remove the dead paths.
Finally, you should run:
powermt config