Re: AIX 4.3 Stale LVs

On Oct 24, 4:21 am, MJB <helios...@xxxxxxx> wrote:
Hi All,

I've inherited an old AIX 4.3 system with 1GB drives in it. Yesterday
I noticed some stale LVs. I googled the issue and ran some commands I
found in other results. Here is what the system looked like before I
started:

rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT
POINT
hd5 boot 2 4 2 closed/syncd N/A
hd6 paging 128 256 2 open/stale N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 2 4 2 open/stale /
hd2 jfs 146 292 2 open/stale /usr
hd9var jfs 1 2 2 open/stale /var
hd3 jfs 15 30 3 open/stale /tmp
hd1 jfs 1 2 2 open/syncd /home
lv01 jfs 1 1 1 closed/syncd N/A
lv00 jfs 5 10 1 open/syncd /local
lv02 jfs 360 360 2 open/syncd #

After running 'syncvg -v rootvg':
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT
POINT
hd5 boot 2 4 2 closed/syncd N/A
hd6 paging 128 256 2 open/stale N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 2 4 2 open/syncd /
hd2 jfs 146 292 2 open/syncd /usr
hd9var jfs 1 2 2 open/syncd /var
hd3 jfs 15 30 3 open/stale /tmp
hd1 jfs 1 2 2 open/syncd /home
lv01 jfs 1 1 1 closed/syncd N/A
lv00 jfs 5 10 1 open/syncd /local
lv02 jfs 360 360 2 open/syncd #

Now only hd3 (/tmp) and paging space are stale

# syncvg -l hd6
0516-068 lresynclv: Unable to completely resynchronize volume. Run
diagnostics if neccessary.
0516-934 /usr/sbin/syncvg: Unable to synchronize logical volume hd6.

I see a missing device when I run this command:
# lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE
DISTRIBUTION
hdisk7 active 248 92
06..48..00..00..38
0516-304 lsvg: Unable to find device id 000048054d75e6b0 in the Device
Configuration Database.
000048054d75e6b0 missing 248 105
50..50..00..00..05
hdisk12 active 248 73
50..22..00..00..01
hdisk13 active 248 7
00..00..00..00..07
hdisk9 active 248 0
00..00..00..00..00

But this command shows all disks OK:
# lspv
hdisk7 00004805507bbe5d rootvg
hdisk9 0000145383ffebcf rootvg
hdisk12 0000145384007ccf rootvg
hdisk13 000014538402b614 rootvg

In more detail:
# lspv -l hdisk7
hdisk7:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
hd5 2 2 02..00..00..00..00 N/A
hd2 146 146 41..01..43..49..12 /usr
hd4 2 2 01..00..01..00..00 /
hd1 1 1 00..01..00..00..00 /home
hd8 1 1 00..00..01..00..00 N/A
hd9var 1 1 00..00..01..00..00 /var
hd3 3 3 00..00..03..00..00 /tmp

# lspv -l hdisk9
hdisk9:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
lv02 247 247 50..49..49..49..50 #
lv01 1 1 00..01..00..00..00 N/A

# lspv -l hdisk12
hdisk12:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
lv00 5 10 00..10..00..00..00 /local
hd2 146 146 00..01..47..49..49 /usr
hd5 2 2 00..02..00..00..00 N/A
hd8 1 1 00..01..00..00..00 N/A
hd1 1 1 00..01..00..00..00 /home
hd3 12 12 00..12..00..00..00 /tmp
hd9var 1 1 00..01..00..00..00 /var
hd4 2 2 00..00..02..00..00 /

# lspv -l hdisk13
hdisk13:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
lv02 113 113 50..05..00..15..43 #
hd6 128 128 00..45..49..34..00 N/A

So, 2 questions:
#1 How do I get the stale LVs to read open/synced
#2 How do I get the missing 000048054d75e6b0 out of the ODM?

without too onerous a lecture, this is why documentation and regular
backups are so valuable.
it looks like you have had a disk failure.
the AIX error log will hopefully tell you what happened, and when. try
the "errpt" command. Also look through the syslog (check /etc/
syslog.conf for setup)

run
lsdev -Cc disk
lscfg -vl hdisk\*
lslv -l lvname (hd6 etc; will probably fail)

hope you have some good backups :)
when was the last mksysb or other backups ?

seriously, you will probably be able to remove the half of the mirrors
that are on the problem PV, replace the failing disk (if that's the
problem) and remirror.
I had problems with AIX 4.3 and failing disks years back.
I wouldn't suggest removing ODM entries, it's very easy to corrupt the
VGDA on the PV's as it synchronises itself with the ODM and then
you'll really be in the do-do's.
.

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