On Tue, Mar 18, 2014 at 9:25 PM, Bob Peterson <rpeterso@xxxxxxxxxx> wrote: > ----- Original Message ----- >> What is your opinion about this scrip? >> >> for ((i = 17; i < 1756377984; ++i)); do gfs2_edit -p $i blockalloc 3 >> /dev/sdb >/dev/null 2>&1; done >> >> Could we change all of block allocations to "3"? > > Hi, > > That would be dangerous. I would hope that the resource groups would be > ignored, but I've never done it. I wouldn't be surprised if you had > gfs2_edit segfault for some of it. At the very least, you would be turning > all your journal blocks to appear like dinodes, as well as all the > extended attributes, directory leaf blocks, etc., which will confuse > fsck.gfs2. The fsck.gfs2 will do a much better job if you only change > the dinode blocks from 0 to 3. > > You would be much better off writing a loop that first checked the > block's current type, with -p <block number> blocktype, and only > change its bit to 3 if it is type 4 (dinode). > > Also, the script would take a very long time, because it's going to > invoke gfs2_edit a trillion and a half times. Writing a program to > do this once would be quicker. > > Regards, > > Bob Peterson > Red Hat File Systems > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster Hi, Do you mean program likes this? for ((i = 17; i < 1756377984; ++i)); do ss=$(gfs2_edit -p $i blocktype /dev/sdc | cut -d " " -f 1); if [[ $ss -eq 4 ]]; then gfs2_edit -p $i blockalloc 3 /dev/sdb >/dev/null 2>&1; fi done I'm a C/C++ programmer, if you trust program logic, i would try to implement with C/C++. and would public in reply. Regards. Pine. -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
