[Ocfs-users] Strange "feature"

[Bluth, Gunnar]

Hi all!

Doing my first steps with OCFS (1.0.9), I ran across a nifty little 
"feature"....

We've been trying if DMP with QLogic 2300 HBAs works without having DMP 
activated (ok, blame on me...).
ocfstool allows you to mount different partitions on the same mountpoint, but 
after we tried that, everything went to state "D" and we chose to reboot the 
whole cluster (4 nodes).

After rebooting, ocfstool shows 6 (!) slots per partition, with 2 nodes 
configured twice, each with two different GUIDs.

Since documentation is rare for this kind of stuff, I sniffed around a little 
bit and found out that these mappings are written to the first "line" of the 
raw partition.
E. g. "head -n1 /dev/sda8" shows:
OracleCFS/mnt/oraocfs-v0øû
                          Ü\àà$ 
²}àDTíÂæÿÿÿÿoracleM3¾v(UõmD}æi¡sÿÿÿÿNODECFGÿÿÿÿrac04F36051760F4649D402B90040A5B16206130.21.169.24Xÿÿÿrac03132F09F13442E03CD23D0040A5B1C2C9130.21.169.23Xÿÿÿrac026C00E52AF09EA8F0193C0040A5B1C235130.21.169.22Xÿÿÿrac017FBEFF358A2950CF25F90002A5CE4B1C130.21.169.21Xÿÿÿrac02556B3D40EA87C7AD58280040A5B1C235130.21.169.22Xÿÿÿrac042A2F091A36FF8E2085C80040A5B16206130.21.169.24XÿÿÿNODECFGæ7ò0«%­

As you might be able to see ;-), "rac04" and "rac02" are mentioned twice...

fsck.ocfs doesn't see any errors.

Everything works (except some mount problems we also experienced before...), 
so it's more a kind of cosmetic problem, but I'd really like to know how I can clean this up again....

Thx in advance, and regards,
-- 
Nick (Gunnar) Bluth
Linux Systems Administrator

on behalf of:
Dresdner Kleinwort Wasserstein
Dresdner Bank AG
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