Parted 1.4.20 bug report

[ajs372]

Hello,

        The effect of the bug is as follows:
Summary:

  -I resized my extended partition to fill the disk.
  -I moved the contained partitions towards the end of the extended 
partition
  -I resized my extended partition to eliminate free space in the 
beginning of the partition.

  -As a result. One of the inner partitions has intact directory 
structure, but corrupted filenames.
  -The other seems to be in perfect condition.


Full description.

My original partition configuration was:

  Disk geometry for /dev/hda: 0.000-29333.390 megabytes
  Disk label type: msdos
  Minor    Start       End     Type      Filesystem  Flags
  1          0.031   3004.343  primary   FAT         boot
  2       3004.343   5004.624  primary   ext2
  4       5004.624   5130.131  primary   linux-swap
  3       5130.132  20010.651  extended              lba
  5       5130.163   9640.568  logical   FAT
  6       9640.600  20010.651  logical   FAT

I wanted to increase the size of my ext2 partition(minor=2), so I 
started by increasing the extended(minor=3) to fill the disk.

  (parted) resize 3 5130.132 29333.390
  (parted) print
  Disk geometry for /dev/hda: 0.000-29333.390 megabytes
  Disk label type: msdos
  Minor    Start       End     Type      Filesystem  Flags
  1          0.031   3004.343  primary   FAT         boot
  2       3004.343   5004.624  primary   ext2
  4       5004.624   5130.131  primary   linux-swap
  3       5130.132  29329.606  extended              lba
  5       5130.163   9640.568  logical   FAT
  6       9640.600  20010.651  logical   FAT

I then proceeded to reposition the last(minor=6).
20020.651 - 9640.600  = 10370.051 = size of 6
29329.606 - 10370.051 = 18959.555 = new beginning pos for 6

  (parted) resize 6 18959.555 29329.606
  (parted) print
  Disk geometry for /dev/hda: 0.000-29333.390 megabytes
  Disk label type: msdos
  Minor    Start       End     Type      Filesystem  Flags
  1          0.031   3004.343  primary   FAT         boot
  2       3004.343   5004.624  primary   ext2
  4       5004.624   5130.131  primary   linux-swap
  3       5130.132  29329.606  extended              lba
  5       5130.163   9640.568  logical   FAT
  6      18959.555  29329.606  logical   FAT         lba

I then proceeded to reposition the second to last(minor=5)
9640.600 - 9640.568    = 0.032    = previous distance between partitions
9640.568 - 5130.163    = 8510.405 = size of 5
18959.555 - 0.032 - 8510.405 = 10449.118 = new beginning pos for 5

  (parted) move 5 10449.118
  (parted) print
  Disk geometry for /dev/hda: 0.000-29333.390 megabytes
  Disk label type: msdos
  Minor    Start       End     Type      Filesystem  Flags
  1          0.031   3004.343  primary   FAT         boot
  2       3004.343   5004.624  primary   ext2
  4       5004.624   5130.131  primary   linux-swap
  3       5130.132  29329.606  extended              lba
  5      10448.525  14958.962  logical   FAT
  6      18959.555  29329.606  logical   FAT         lba

Finaly I resized the extended to trim out the free space.

  (parted) move 5 10449.118
  (parted) print
  Disk geometry for /dev/hda: 0.000-29333.390 megabytes
  Disk label type: msdos
  Minor    Start       End     Type      Filesystem  Flags
  1          0.031   3004.343  primary   FAT         boot
  2       3004.343   5004.624  primary   ext2
  4       5004.624   5130.131  primary   linux-swap
  3       5130.132  29329.606  extended              lba
  5      10448.525  14958.962  logical   FAT
  6      18959.555  29329.606  logical   FAT         lba

When It was finished I mounted 6 (mount -t vfat /dev/hda6 /mnt/win_e)
An "ls" showed the directory structure was intact, but decending into a 
subdiretory (music) performing an "ls" revealed a severly garbled set of 
files along with some completely intact. The garbled filnames were 
composed random alphabetic and non alphabetic characters. To be sure the 
files with correct file names were intact, I played several of the 
mp3's, which seemed to be completely ok.

I mouted 5 and examined the directory stucture and file listings, and 
everything on 5 seemed to be in perfect condition.

I have a list of the directory contents(/mnt/win_e/music) before the 
parted actions, if it would be of use. If you need any more info, please 
email me. I will attempt not to reboot as long as possible.

        Regards,
        Andy Somerville