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Full Discussion: Asvc_t values in iostat output
Operating Systems Solaris Asvc_t values in iostat output Post 302948567 by jim mcnamara on Tuesday 30th of June 2015 01:03:28 PM
Old 06-30-2015
The ascv_t time varies all over the place. A SATA 7200rpm disk will be saturated at a lower asvc_t number than a disk with higher rpms.

The point is that those numbers are relative. You have to work with them under various system conditions to really understand what you are seeing. MadeInGermany is giving a good start, but do not jump onto 'fixing' things until you are sure you understand the problems. It could simply be a poorly written piece of code eating a disk for lunch.

That 25 number is mostly baloney. IMO. I have a SAN with huge IOPS capacity. A number like 24 would indicate an unbelievably high load. I could see that by looking at r/s and w/s for that disk. On some other device, it is okay.

If you need help with tuning, consider sarcheck - it does a good job of sroting through sar data and telling you what is happening. IMO
 

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LEARN ABOUT HPUX

vximportdg

vximportdg(1M)															    vximportdg(1M)

NAME

       vximportdg - import a disk group into the Veritas Volume Manager configuration

SYNOPSIS

       vximportdg daname new_dgname

DESCRIPTION

       The  vximportdg	utility  performs  a temporary import of the disk group contained on the disk device specified by daname to the disk group
       specified by new_dgname.  As the persistent disk group information is not changed within the private partition of the  affected	disk,  the
       import is only valid for the duration of the bootload or until a vxdg deport is performed.

ARGUMENTS

       daname	 Specifies  the  device name (disk access name) of one of the member disks of the disk group to be imported. The other members are
		 imported automatically.

       new_dgname
		 Specifies the disk group to be imported.

USAGE

       One reason to use the vximportdg utility is to import a second generation of the rootdg disk group so that its objects  are  available  for
       use  while a system is running on a different rootdg.  To prevent volumes on the second generation rootdg from having the same device minor
       numbers as volumes (such as rootvol) on the active rootdg, the importation assigns temporary non-conflicting device minor numbers.  If this
       occurs, vximportdg outputs warning messages detailing the mapping of the minor numbers.

SEE ALSO

       vxdg(1M)

VxVM 5.0.31.1							    24 Mar 2008 						    vximportdg(1M)
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