On Sat, Jul 06, 2002 at 04:01:18PM -0700, Terry Lambert wrote: > Darren Pilgrim wrote: > > > > I thought the limit for filesystems was 2TB? > > > > > > The Blocknumber is signed that gives: > > > 2^31 * 512Bytes > > > > Why sign the blocknumber? LBA uses an unsigned 32-bit integer, > > allowing 2TB, and IIRC SCSI uses an unsigned integer as well (though I > > can't remember if that one is 32 or 48 bits, or if they've gotten to > > 64 bits by now). > > To differentiate between direct (positive) and indirect (negative) > blocks within the inode, and within an indirect block.
Inodes hold fs blocks which are different from device blocks. On UFS they are sized equaly to fragments. And I never saw negative blocknumbers in inodes or indirect blocks. The difference is made just with the location of the entry. Do you have a special filesystem in mind? -- B.Walter COSMO-Project http://www.cosmo-project.de [EMAIL PROTECTED] Usergroup [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
