On Fri, 2008-01-18 at 18:47 +0000, Christopher Probst wrote: > Hello, > > This is my first post/question on this mailing list, so I am sorry if > the question sound naive. I have a GFS formatted partition(dev/hdb1) > that is assigned to a cluster. I would like to know, if I can extract > the following info of a particular GFS formatted partition > > 1) Cluster name it is assigned to > 2) Number of journals; > 3) lock method used. > > Is there any way to do this without getting a mount point involved? > > Thank you in advance > Christopher Hi Christopher, 1. Cluster name is easy: gfs_tool sb /dev/sdb1 table 2. Number of journals is a bit more difficult. If the FS is mounted you can do: gfs_tool df <mount point> However, since you said "without getting a mount point involved" I'll assume that it's not mounted. You can still find out the number of journals. In RHEL5, Centos5 and equivalent, you can do this: gfs2_edit -p jindex /dev/sdb1 (The gfs2_edit program recognizes gfs1 file systems as well as gfs2) I'll warn you that the output is not very user-friendly. In RHEL4, Centos4 and equivalent there's no "good" way unless the file system is mounted (again, use gfs_tool df). There is a "not so good" way, which is to use "gfs_edit" to poke around, but you've got to know what you're doing. You basically have to jump from the superblock to the jindex and see how many entries are there. Unlike gfs2_edit, gfs_edit is primitive and has no print option. It may not be relevant at this point in time, but for gfs2 starting when RHEL5.2 is released (I think), I also added: "gfs2_tool journals <mountpoint>". 3. Lock method is easy: gfs_tool sb /dev/sdb1 table Regards, Bob Peterson Red Hat GFS -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
