On Tue, Mar 18, 2014 at 9:00 PM, Bob Peterson <rpeterso@xxxxxxxxxx> wrote: > ----- 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 > What is your opinion about this scrip? for ((i = 17; i < 1756377984; ++i)); do gfs2_edit -p $i blockalloc 3 /dev/sdb >/dev/null 2>&1; done Could we change all of block allocations to "3"? > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
