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08-14-2002 02:58 AM
08-14-2002 02:58 AM
Cab be dump and swap on the same lvol? is it correct and not pottential problems?
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 790528 0 790528 0% 0 - 1 /dev/vg00/lvol2
dev 4096 0 4096 0% 0 - 1 /dev/vg00/lvol9
reserve - 794620 -794620
memory 1683580 687516 996064 41%
see fstab file
dev/vg00/lvol3 / hfs defaults 0 1
/dev/vg00/lvol1 /stand hfs defaults 0 1
/dev/vg00/lvol4 /home hfs defaults 0 2
/dev/vg00/lvol5 /opt hfs defaults 0 2
/dev/vg00/lvol6 /tmp hfs defaults 0 2
/dev/vg00/lvol7 /usr hfs defaults 0 2
/dev/vg00/lvol8 /var hfs defaults 0 2
/dev/vg00/lvol9 / dump defaults 0 0
/dev/vg01/lvol1 /var/opt/HP-AIN/cores hfs defaults 0 2
/dev/vg01/lvol2 /var/opt/HP-AIN hfs defaults 0 2
/dev/vg01/lvol3 /var/opt/HP-AIN/cpeun/checkpoint hfs defaults 0 2
/dev/vg02/lvol1 /var/opt/HP-AIN/cpeun hfs defaults 0 2
/dev/vg00/lvol9 ... swap pri=1 0 0
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08-14-2002 03:00 AM
08-14-2002 03:00 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
Pete
Pete
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08-14-2002 03:02 AM
08-14-2002 03:02 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
I will aplicate it
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08-14-2002 03:17 AM
08-14-2002 03:17 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
Actually, opinions vary on this subject. I think it's OK but see Bill McNamara's response in this thread:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x48d8f715edc6d5118ff10090279cd0f9,00.html
Pete
Pete
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08-14-2002 03:28 AM
08-14-2002 03:28 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
Only on mirrored disks, the dump is cannot and will not be mirrored.
See 'lvlnboot -v'.
Regards,
Ceesjan
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08-14-2002 03:29 AM
08-14-2002 03:29 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
Now there is an advantage to having a separate dump area. If you have plenty of disk space, you can allocate about 25% of the size of your RAM to dedicated dump area(s). Then, if the machine crashes, when it comes back up, you can have the savecrash configuration set to LOG_ONLY=1 and SAVECRASH=0. This will speed up the reboot process significantly after a crash (saving a 24Gb crash dump takes a *LONG* time).
Since swap is on separate volumes, you can manualy run savecrash at a later time once things are back to normal. You can also run savecrash out to a tape rather than to /var/adm/crash. The tape image is a series of files in tar format.
Bill Hassell, sysadmin
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08-14-2002 03:41 AM
08-14-2002 03:41 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
.....
/dev/vg00/lvol9 / dump defaults 0 0
....
dev/vg00/lvol9 ... swap pri=1 0 0
I have not too much choise.
I cannot tune kernel parameters because (I suppose it need reboot).
I can only choise free lvol.
As I understand. If system works it lvol9 will be used as swap area...
If sth happen swap area is not needen anymore and lvol9 will be used as dump.
Am I right.
So can I use this configuration?
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08-14-2002 03:44 AM
08-14-2002 03:44 AM
Re: Cab be dump and swap on the same lvol? is it correct and not pottential problems?
swap on
/dev/vg00/lvol2 and /dev/vg00/lvol9
and
dump on /dev/vg00/lvol9