/dev/hd9var/ /var what should i do.

UNIX AIX
1

Hello

my df -k show me that the /var used 93%

Filesystem 1024-blocks Free %Used Iused %Iused Mounted on
/dev/hd4 196608 33920 83% 2253 3% /
/dev/hd2 1310720 352732 74% 25266 8% /usr
/dev/hd9var 262144 18724 93%:confused: 781 2% /var
/dev/hd3 196608 88772 55% 383 1% /tmp
/dev/hd1 196608 95496 52% 727 2% /home
/proc - - - - - /proc
/dev/hd10opt 65536 54988 17% 389 3% /opt

How ever, of i check using du command. show that /var having only 76721Kbytes.

#du -sk /var:confused:
76721 /var

Any help is really appreaciated. Thank you
Cheers.

2

Hi,

I would try following:

  • fuser -d /var, get a PID and check for the process. Kill or restart it maybe and check the FS again.
  • Try to umount it have a fsck running on it; might be difficult because of many processes have some file open in there. Maybe a reboot is easier if not already done.

GL!
Zaxxon

3

Thank you.

$ fuser -d /var
/var: 8000
$ ps -ef |grep 8000
root 8000 1 0 Jun 04 - 7:53 /usr/sbin/cron
xxxxka 23842 65348 0 12:17:27 pts/5 0:00 grep 8000
root 46994 8000 0 12:10:00 - 0:00 sh -c /zyq/sysinfo/vmstat.scr

$lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 16 32 2 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 3 6 2 open/syncd /
hd2 jfs 20 40 2 open/syncd /usr
hd9var jfs 4 8 2 open/syncd /var
hd3 jfs 3 6 2 open/syncd /tmp
hd1 jfs 3 6 2 open/syncd /home
hd10opt jfs 1 2 2 open/syncd /opt
paging00 paging 32 64 2 open/syncd N/A
pridumpdev sysdump 16 16 1 open/syncd N/A
secdumpdev sysdump 16 16 1 open/syncd N/A
paging01 paging 32 64 2 open/syncd N/A

$ lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 005c8bec00004c000000010505b2fc29
VG STATE: active PP SIZE: 64 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 1084 (69376 megabytes)
MAX LVs: 256 FREE PPs: 820 (52480 megabytes)
LVs: 13 USED PPs: 264 (16896 megabytes)
OPEN LVs: 12 QUORUM: 1
TOTAL PVs: 2 VG DESCRIPTORS: 3
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 2 AUTO ON: yes
MAX PPs per PV: 1016 MAX PVs: 32
LTG size: 128 kilobyte(s) AUTO SYNC: no
HOT SPARE: no

Can i increase the space since FREE PPs=820.? :confused:

4

hi guys,

I reading the old thread on how to extend or increase the fs.

# smit jfs2 or smit chfs :confused:

What is the different between them? Are they same. Which one is appropriate to use.

Please response. Thank you. Need help here.. fs is growing now..

5

Just do a "smitty fs", change fs, "enhanced..." for jfs2 or "journaled..." for jfs1, select "change" again, pick it from the list and add some units and go.
Yes, lsvg shows you in the "FREE PPs", how much space is left for increase on existing or for creation of new LV/FSes.
"man lsvg" will tell you that too ^^

Did you try the fsck or reboot or something to get a correct status of /var?

6

Have you checked the logs? Change directory to /var (cd /var) and run the command du . | more then check the listing of directories for excessive use. There should be no need to increase the size of /var. Also look in /var/adm and check the size of the wtmp file. If it is excessive you will find references on this forum to the method of clearing out the wtmp file.

7

He ran "du" already and found the difference displayed by "df" - so, before anything stops working or gets errors, better grant some of the free space to /var until you get a chance to find out what's going wrong.

8

Thank you zaxxon and johnf. Really appreaciate that.

It is a crusial system act as a application interface between the cluster. thus, rebooting the system is only can be done when there is a quaterly shechdule downtime. I did manage to free out some space.

As you can see, i do have mirror right? Correct me if i am wrong.
For example:
hd4 jfs 3 6 2 open/syncd /after Increasing of JFS, does the number increase also.?? automatically. or i need to do something??
example hd4 jfs 6 12 2 open/syncd / something like that.

Thank again.

9

Sorry, didn't have a look in here for some time.
You can see if you have a mirror if you do a "lsvg -l <insertvgnamehere>".

Example:

root@blabla:/usr/local/doc> lsvg -l rootvg
rootvg:
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT
hd5                 boot       1     2     2    closed/syncd  N/A
hd6                 paging     64    128   2    open/syncd    N/A
hd8                 jfs2log    1     2     2    open/syncd    N/A
hd4                 jfs2       2     4     2    open/syncd    /
hd2                 jfs2       25    50    2    open/syncd    /usr
hd9var              jfs2       4     8     2    open/syncd    /var
hd3                 jfs2       4     8     2    open/syncd    /tmp
hd1                 jfs2       2     4     2    open/syncd    /home
hd10opt             jfs2       4     8     2    open/syncd    /opt
lg_dumplv           sysdump    32    32    1    open/syncd    N/A
loglv00             jfslog     1     2     2    open/syncd    N/A
lv00                jfs        2     4     2    open/syncd    /var/adm/csd
lvrepos             jfs2       10    20    2    open/syncd    /repos
paging00            paging     64    128   2    open/syncd    N/A
lg_dumplv2          sysdump    32    32    1    open/syncd    N/A

When a LV is mirrored you have at least twice the number of PP than LPs. In the example above you can see, that all LVs are mirrored but the 2 sysdump devices lg_dumplv and lg_dumplv2.
Increasing a filesystem by blocks, megabytes or something will at least always allocate up to the full size of the next PP. So if you are at the "border" to the next PP and tell the system you need 200 MB more space in the FS, and have 100 MB left in the current PP, it will use it up and get the next full PP too. Let's say you have a size of 256 MB per PP, it would allocate 100 MB of the current PP and all 256 MB of the next PP. Your FS would be larger by 356 MB instead of only 200 MB. You will see more LPs & PPs allocated and if it is a mirrored LV, you will see even more PPs :wink:

But this is nothing to worry about - this is normal.