shuffled devices...
I was testing ASM (Oracle) some days ago and then my idea was to simulate the breakdown of one SAN.
The device disappeared and I thought ... good!
The I represented it to the server but nothing happend.
That's the short form :)
The long story.
There are two Servers, two SAN-devices, two SAN-switches ... so we're multipathing. There should be 4 pathes visible per Server and that should result in one device (/dev/sdn)
When I got the concept right SLES 10 should make one device (/dev/<something>) out of both Pathes from the SANswitch.
So... before i pulled the "presentation"plug i had /dev/sdn on my 200GB Lun
now i have some Lun that reserved /dev/sdn (and /dev/sdh it's the same LUN) and these are not to be seen in yast.
Both lunPathes I have to my orignal LUN (former /dev/sdn) are no /dev/sx<something> at all.
I can see one path as /dev/mapper/<lun>
scli tells me:
that
/dev/sdo
/dev/sdx
/dev/sdk
/dev/sdu
have the LUN i'm looking for.
/dev/sdo is visible in the partitioner with one partition (that's what the deivce had)
/dev/sdx is not visible
/dev/sdk is not visible
/dex/sdu is visible with one partition
so I have all 4 pathes BUT:
1. The order is destroyed
2. I have another device of the type (DM) in the partitioner with the LUN
what has happened? How can I restore my order? /dev/sdn is now reserved by another LUN (something with 120 GB)
kind regards
torgum
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