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Full Discussion: No Paging Space Available
Operating Systems AIX No Paging Space Available Post 302868079 by bakunin on Friday 25th of October 2013 06:56:14 PM
Old 10-25-2013
Quote:
Originally Posted by tugger
1) I can confirm that the system is AIX -
Code:
5300-12-05-1140

2) The file system is mount (called lv_test_3)
Code:
/dev/fslv12    272629760 272587472    1%        4     1% /lv_test_4

Good. Sorry for sometimes stating the obvious superfluously, the general experience of long-standing members here is that the painfully obvious is less obvious one might think to the better part of the audience.

Quote:
Originally Posted by tugger
3) I am aware all the dd process will run in parallel as that is the aim to look into the throughput on the LVM (SAN attached disks) and the benefit (if any) of having the inter policy set to maximum
If you are carrying out performance tests you might consider taking the file system driver out of the equation by addressing the raw device instead of the filesystem:

Code:
dd if=/dev/null of=/dev/somelv ....

or even the raw hard disk. I once did exactly that for the same reasons, you can read here an account of the risks involved - afterwards it was quite funny.

Quote:
Originally Posted by tugger
Therefore your theory of the bs being held in memory might be correct.

I was trying a bs of 512m with the thought that it might be faster than using a bs of 1m.
Give the LPAR more memory, then (6GB should suffice). Increase not the "max" alone in the profile, increase the "Desired" too. Fork()-ing 10 such processes will be done faster than the hypervisor can react.

I hope this helps.

bakunin
 

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LEARN ABOUT OPENSOLARIS

vgmerge

VGMERGE(8)                                                    System Manager's Manual                                                   VGMERGE(8)

NAME

       vgmerge - merge two volume groups

SYNOPSIS

       vgmerge  [-A|--autobackup  y|n]  [-d|--debug]  [-h|-?|--help]  [-l|--list] [-t|--test] [-v|--verbose] DestinationVolumeGroupName SourceVol-
       umeGroupName

DESCRIPTION

       vgmerge merges two existing volume groups. The inactive SourceVolumeGroupName will be merged into the DestinationVolumeGroupName if  physi-
       cal extent sizes are equal and physical and logical volume summaries of both volume groups fit into DestinationVolumeGroupName's limits.

OPTIONS

       See lvm for common options.  -l, --list Display merged DestinationVolumeGroupName like "vgdisplay -v".

       -t, --test
              Do a test run WITHOUT making any real changes.

Examples
       "vgmerge -v databases my_vg" merges the inactive volume group named "my_vg" into the active or inactive volume group named "databases" giv-
       ing verbose runtime information.

SEE ALSO

       lvm(8), vgcreate(8), vgextend(8), vgreduce(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                              VGMERGE(8)
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