how to check AIO running on /usr2


 
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Operating Systems AIX how to check AIO running on /usr2
# 1  
Old 03-02-2012
how to check AIO running on /usr2

Hello guys, help me out on this..
I am not so well versed in this AIO.

How do tell if AIO is running for /usr2 ? From what i see / usr2 is JFS2.

Here some information:
Code:
Name Nodename Mount Pt VFS Size Options Auto Accounting
/dev/hd4 -- / jfs 1835008 -- yes no
/dev/hd1 -- /home jfs 2883584 -- yes no
/dev/hd2 -- /usr jfs 3407872 -- yes no
/dev/hd9var -- /var jfs 1310720 -- yes no
/dev/hd3 -- /tmp jfs 1572864 -- yes no
/proc -- /proc procfs -- -- yes no
/dev/hd10opt -- /opt jfs 1048576 -- yes no
/dev/fwdump -- /var/adm/ras/platform jfs 786432 -- no no
/dev/universe -- /universe jfs 3145728 rw yes no
/dev/com_d1 -- /usr2 jfs2 950009856 rw yes no    <----------------------------
/dev/cd0 -- /cdrom cdrfs -- ro yes no
/dev/com_d2 -- /usr2/backups jfs2 1006632960 rw yes no

AIO is defintely running in this server with LEGACY AIO.
Code:
pstat -a | egrep ' aioserver' | wc -l
80

Code:
command : lsattr -El mem0
 
goodsize 7808 Amount of usable physical memory in Mbytes False
size 7808 Total amount of physical memory in Mbytes False
 
AIO enabled ? = Yes
 
command : lsattr -El aio0
 
autoconfig available STATE to be configured at system restart True
fastpath enable State of fast path True
kprocprio 39 Server PRIORITY True
maxreqs 4096 Maximum number of REQUESTS True
maxservers 10 MAXIMUM number of servers per cpu True
minservers 1 MINIMUM number of servers True

Please help.
# 2  
Old 03-03-2012
yes your filesystem is jfs2
and if the application running on your box is capable to use AIO and has to access /usr2 than it will do so in async mode if required (a DB for example)
Regards
zxmaus
This User Gave Thanks to zxmaus For This Post:
# 3  
Old 03-03-2012
thanks zxmaus,

is this true, if AIO is enabled, then this feature will enabled across all the filesystems in the server ?
# 4  
Old 03-03-2012
yes it is a system setting, not a filesystem setting ...

Regards
zxmaus
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