----- Original Message ----- > It's GFS2 . > Without any use of gfs2_grow, > All options are equal .. > No, > > There is many many block types (http://linux.die.net/man/8/gfs2_edit), > Do we find 4 (Dinode)? instead of for example 3 (Resource Group Bitmap)? > > How we could fine bitmaps? Hi, To use gfs2_edit properly, you should have an understanding of how the gfs2 file system is kept on disk. If you are a Red Hat customer, I have several videos on the Red Hat customer portal on how to use gfs2_edit. The dinode blocks are type 4. There are two kinds of bitmaps: bitmaps associated with rgrps (type 2) and bitmaps that follow rgrps (type 3). The rgrps are indexed by the rindex system file in the master directory, and ri_length tells you how many bitmap blocks follow each rgrp block. In newer versions (RHEL6+) there are little helper functions in gfs2_edit that can tell you the bitmap status, and alter it. For example: gfs2_edit -p <block number> blocktype /dev/your/device This command will tell you the block type, for example: # gfs2_edit -p root blocktype /dev/mpathc/scratch 4 (Block 22 is type 4: Dinode) gfs2_edit -p <block number> blockalloc /dev/your/device This command will tell you the current bitmap setting. The bitmap setting may be changed to "3" (dinode) with: gfs2_edit -p <block number> blockalloc 3 /dev/your/device So you could write a script to do it, but again, you would have to be careful, and work on a copy, never the original. Regards, Bob Peterson Red Hat File Systems -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
