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тАО04-21-2009 08:49 AM
тАО04-21-2009 08:49 AM
I've been wrestling with perplexing LVM behaviors this morning, and before I call HP Support, I wanted to give you fine folks a crack at it.
Platform: Two-node MCSG cluster, HP-UX 11.31 VSE OE on Integrity rx6600 servers
Physical volume is a single 1.25TB LUN on a Promise Vtrak 610f SAN (SCSI3 signaling) connected via 4Gb FC to redundant Brocade 5000 4gb FC switches.
We're using the Agile DSF via the Next Generation Storage Stack.
The volume was provided as overflow storage for some of our long-term archive data, as our HDS9960 (~XP512) is filling up. We never see these symptoms on the HDS SAN.
root@thor:/dev# mkdir vg_board_archive
root@thor:/dev# mknod vg_board_archive/group c 64 0x0a0000
root@thor:/dev# timex vgimport -v -s -N -m /tmp/map.vg_board_archive vg_board_archive
Beginning the import process on Volume Group "vg_board_archive".
vgimport: Physical volume "" could not be added to "/etc/lvmtab" and
therefore was not added to the volume group.
Logical volume "/dev/vg_board_archive/lv_7FEB2009" has been successfully created
with lv number 1.
Logical volume "/dev/vg_board_archive/lv_8AUG2008" has been successfully created
with lv number 2.
vgimport: Volume group "/dev/vg_board_archive" has been successfully created.
Warning: A backup of this volume group may not exist on this machine.
Please remember to take a backup using the vgcfgbackup command after activating the volume group.
real 8:06.61 (8 minutes to vgcreate)
user 0.01
sys 0.09
root@thor:/dev# timex vgchange -a e vg_board_archive
Activated volume group in Exclusive Mode.
Volume group "vg_board_archive" has been successfully changed.
real 1:20.94 (1.5 minutes to activate!)
user 0.00
sys 0.01
root@thor:/dev# timex vgchange -a n vg_board_archive
Deactivated volume group in Exclusive Mode.
Volume group "vg_board_archive" has been successfully changed.
real 0.01 (Instantaneous deactivation)
user 0.00
sys 0.01
I've tried creating the Volume Group using legacy DSFs instead. No change.
Still more confusing, once the volume is activated, all other operations are fast. (mount operations, filesystem operations, throughput, etc.)
I've looked at a number of scsimgr(1m) options and tinkered with the disable_flags attributes with no success.
I'd be glad to hear the thoughts of all. Thanks in advance.
Dave
Solved! Go to Solution.
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тАО04-21-2009 08:53 AM
тАО04-21-2009 08:53 AM
Solution- is the storage device supported with hp-ux?
- is the storage device supported 11.31?
- are all settings on the device correct for 11.31?
Hope this helps!
Regards
Torsten.
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тАО04-21-2009 08:58 AM
тАО04-21-2009 08:58 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
http://www.promise.com/upload/datasheet/VTrak-VTE610f_std_112807.pdf
HTH
Duncan
I am an HPE Employee
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тАО04-21-2009 09:01 AM
тАО04-21-2009 09:01 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
Supported Operating Systems
Mac OS X, Mac OS X server, versions 10.5.2 and later, Windows 2003, Linux (Red Hat, SuSE)
Can you confirm?
Hope this helps!
Regards
Torsten.
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тАО04-21-2009 09:20 AM
тАО04-21-2009 09:20 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
You are all 100% correct. It does seem to imply that this is not an supported hardware configuration.
We were hoping to use this to meet unfunded storage needs.
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тАО04-21-2009 09:26 AM
тАО04-21-2009 09:26 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
;-)
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО04-21-2009 09:48 AM
тАО04-21-2009 09:48 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
Thanks!
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тАО04-21-2009 09:51 AM
тАО04-21-2009 09:51 AM
Re: LVM volume creation and vgchange command are incredibly slow. Throughput is very fast.
Thanks again!