I don't remember how UFS did this but I could go figure it out in 10 or 20 minutes if that helped. ext* - no idea. I'd expect that your "block number is 0" is a darn good guess, that's what I would do. That or -1. On Wed, Oct 15, 2008 at 03:43:10AM +0200, Carlo Wood wrote: > Hi, I don't know how to call them, but it seems > that ext3 grep allows files to be stored that > have a very large size (when doing an 'ls -l') > but do not actually allocate all blocks. > > I assume this is achieved by using 0 as blocknumber > for indirect blocks. > > What are the exact requirements for such files? > Is it allowed to have a double indirect block > that exists entirely of zeroes? Is it possible > there is are 0 entries in the tripple indirect > block? Etc. > > -- > Carlo Wood <carlo@xxxxxxxxxx> > > _______________________________________________ > Ext3-users mailing list > Ext3-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ext3-users -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
