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Are they Informix raw partitions???

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Hugo Solano
Occasional Advisor

Are they Informix raw partitions???

SAM shows these lvos are unused, and I want to create a new mount point to store VxFS snapshots. Can I use any one of these? How would I know if they are being used by Informix for raw space?

lvol10 vg00 Unused 2000
lvol11 vg00 Unused 500
lvol12 vg00 Unused 500
lvol13 vg00 Unused 500
lvol14 vg00 Unused 500
6 REPLIES
Steven E. Protter
Exalted Contributor

Re: Are they Informix raw partitions???

They could be raw partitions.

I run adabase on raw partitions and they show unused on lvm reports.

Its not true, they are quite used.

:=)

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Steven E Protter
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Hugo Solano
Occasional Advisor

Re: Are they Informix raw partitions???

Is there a way to know from the informix side which lvols are used...?
A. Clay Stephenson
Acclaimed Contributor

Re: Are they Informix raw partitions???

It's been many years since I've run Informix Online but something like:
dbaccess ->Connect to Database -> Info

You should find a systable that lists all raw tablespaces.
If it ain't broke, I can fix that.
Tim D Fulford
Honored Contributor
Solution

Re: Are they Informix raw partitions???

1 - log as informix
# su - informix
2 - look at space listing
% onstat -d
3 - look at output and the chunks (LVs) will be listed.
4 - go to the directory holding these chunks from above
% cd
5 - look for links (if any)
% ls -l
6 - belt and braces look at end-point files
% ls -lL

This way you can trace ANY chunk back to its source. IBM-Informix reccomend that you put in soft links to the chunks, so /dev/vgdb/rchunk1 may be a soft link to /usr/informix/databaselinks//rchunk1
& Informix will know it as the latter in onstat -d

Regards

Tim
-
KCS_1
Respected Contributor

Re: Are they Informix raw partitions???

if the lvols are used by Infomix raw partition, their owner of lvols are " informix" in /dev/vg00/lvol*

# ll /dev/vg00


look at the owner of the lvols.

Easy going at all.
Hugo Solano
Occasional Advisor

Re: Are they Informix raw partitions???

As you all said, they show empty, but the owner is informix, also I looked into /dev/vg00 and the numbers matched the onstat -d list of chunks...

Thanks for the great help!