Curtis Gedak wrote: > It appears that parted does not detect the file system type when used > with a device with 4096 byte sector size. I performed my testing on > the Ubuntu 10.04 beta2 distribution using the latest version (April > 27, 2010) of parted from the git repository. > > Since I do not have a device with a 4096 byte sector size, I used the > SCSI_DEBUG module to emulate such a device. > > The steps I used are as follows: > > 1) Create a device with a 4096 byte sector size. > > $ modprobe scsi_debug dev_size_mb=96 sector_size=4096 > > NOTE: In my case this created device "/dev/sdc". > > 2) Create an msdos disk label on the device. > > $ parted -s /dev/sdc mklabel msdos > > 3) Create an ext2 partition that spans the device. > > $ parted -s /dev/sdc mkpart primary ext2 64s 100% > > 4) Create an ext2 file system on the partition. > > $ mkfs.ext2 /dev/sdc1 > > 5) Print out the partition table and discover the missing file system type. > > $ sudo parted /dev/sdc unit s print > Model: Linux scsi_debug (scsi) > Disk /dev/sdc: 24576s > Sector size (logical/physical): 4096B/4096B > Partition Table: msdos > > Number Start End Size Type File system Flags > 1 64s 24575s 24512s primary > > $ > > NOTE the missing "ext2" that should be listed under the "File > system" column. > > Please note that this problem did not occur when I created a > SCSI_DEBUG device using a sector size of 512 bytes.
Thank you for the report and detailed reproducer. This is not surprising, since I have made no effort whatsoever to adjust the bit-rotting file-system-specific code in parted to work with >512-byte sectors, and the ext[234] type-detecting code is part of that. Unless it's easy to fix, I would like to eliminate the code that parted currently uses for that and to use code from a well-maintained library instead, but haven't looked into it at all. _______________________________________________ parted-devel mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/parted-devel
