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IOSCAN shows CLAIMED for unmaped disks from the server.
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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.
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.
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.
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.
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
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