Hello - This is my 1st or 2nd posting to this listserv - - I've been a subscriber for a few years now and find the information here to be very helpful.
I've seen a few postings around OCFS2 and realize that there are a few
customers using this technology on Linux on z. Now I have a situation at
one of my customers that I'd appreciate your feedback on.
Here's the landscape: This customer has a 4TB OCFS2 file system. It is a
logical volume group that's composed of 208 3390 Mod-27's. The cluster is
composed of 2 nodes, and has 500 GB worth of files of various types stored
on the file system. They are running on SLES 10 SP3, and z/VM 5.4.
The customer wanted to expand the cluster to two additional nodes, for a 4
node cluster. They installed 2 additional servers, linked all the disks MW
in the user definitions, created the logical volume group on those servers,
and attempted a mount. They received the following error message:
linz3s08:~ # mount -a
mount.ocfs2: Bad magic number in superblock while opening
device /dev/mapper/system-attachments
Has anyone encountered this scenario? What should be done in this case?
What is the best way to expand an established OCFS2 cluster to include new
members?
Thank you.
Regards
Jin VanStee 33 Maiden Lane
System z IT New York,
Architect 10038-4518
IBM Sales & USA
Distribution,
Software
Sales
Phone: +1-212-493-2053
Mobile: +1-845-519-9430
e-mail: [email protected]
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