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тАО05-08-2009 04:46 AM
тАО05-08-2009 04:46 AM
rx6600/HP-UX 11.31 - Panic'ing with "Unaligned reference fault in kernel"
Anyone experienced this kind of malaise yet?
It's been pretty stable until recently when we added 4 LTO-4 Drives.
The server has 8x4Gbit FC-HBAs. 4-HBAs are used for SAN Disk presentations, the other 4 for LTO-4 FC Tapes. It had 10 LTO-4 TapeDrives presented to it previously.
I know -- that is NutZ! 14 LTO-Drives on 4x4Gbit FC-HBAs? Well you see - this server is running NBU and it's designed to not use all 14 drives at once. The 14 Drives are SSO'd (shared) amongst SAN Media Clients -- in a NetBackup Configuration).
Other things:
It runs VxVM 5.0. It is connected to HDS Thunder, HP EVA and HP XP Storage arrays.
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тАО05-08-2009 05:02 AM
тАО05-08-2009 05:02 AM
Re: rx6600/HP-UX 11.31 - Panic'ing with "Unaligned reference fault in kernel"
PS. We have several servers with disk SAN and tape SAN access like yours. Nothing wrong there.
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тАО05-08-2009 05:24 AM
тАО05-08-2009 05:24 AM
Re: rx6600/HP-UX 11.31 - Panic'ing with "Unaligned reference fault in kernel"
Patches or possibly a scsi panic. With all those devices connected, maybe one of them is not terminated properly.
I know fiber is different, but it works and acts like scsi.
Check the 4 new LTO-4 drives.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО05-08-2009 05:54 AM
тАО05-08-2009 05:54 AM
Re: rx6600/HP-UX 11.31 - Panic'ing with "Unaligned reference fault in kernel"
When this thingy fiest staretd, the panic stck trace matched hose mentioned in a very recent patch for 11.31 estape. That was applied but to no avail.
Subsequent updates to CommonIO and SAS (SERIAL-00) were also done. Same thing.
Firmware was updated on the LTO Drives just to elimnate that as a possbibiliy. No dice too.
Only thing remaining is try movng back to just 10 LTO drives.
OR,
Try applying the week old VxVM/VxFS 5.0 GA patches.
My client's env is BIG, Different and the mix and match of HW is probably unparalleled. We did get a FULL dump this time and hopefully that will allow HP some clue to a possible "instrumented" kernel to dig deep into the panics as they did an 11.11 Env some years back.
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тАО05-08-2009 10:44 PM
тАО05-08-2009 10:44 PM
Re: rx6600/HP-UX 11.31 - Panic'ing with "Unaligned reference fault in kernel"
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тАО08-12-2009 07:59 AM
тАО08-12-2009 07:59 AM