[Linux-cluster] gfs 6.1 superblock backups
cma at analog.org
Tue Jun 3 18:27:13 UTC 2008
Bob and Wendy,
Thank you for your input on this. What I am trying to do
is upgrade a GFS 6.0 filesystems which are attached to various
RHEL3/CentOS3 systems. After performing the steps which outline the
process of going from 3 to 4, but on a CentOS 5 system, I get the problems
mentioned in my message yesterday Re: /sbin/mount.gfs thinks fs is gfs2?
Everyt time I reinstalled a system with CentOS 5 and tried to get gfs
running again I got the same error.
Since I know that this is an unsupported operation, I haven't sought
support for this. However, I noticed that my upgraded filesystem had
sb_fs_format = 1308. The mount code checks for sb_fs_format ==
GFS_FORMAT_FS for gfs 6.1 and GFS2_FORMAT_FS for gfs2. Since it was
neither of these, it kept dying saying that it was a gfs2 fs when mounting
it as gfs, and vice versa. Manually modifying sb_fs_format allowed it to
mount immediately afterward. A subsequent gfs_fsck completes all passes
Is that sufficient for upgrading the filesystem if the other steps are
performed? All fs operations appear to be successful at this point.
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