Phillip Susi wrote:
On Tue, 13 Apr 2010 13:01:42 -0600
Curtis Gedak <[email protected]> wrote:
The problem occurs when partition and file system changes are made to
a partition lower (e.g., sda1) than a mounted partition (e.g.,
sda2). When this occurs parted does not recognize the file system on
the lower partition.
What exactly do you mean by "not recognize"?
I apologize for the lack of clarity Phillip. By "not recognize" I mean
that "parted ... print" does not show the file system on /dev/sda1 as
"ext2", as shown in the following terminal session sample:
ubu...@ubuntu:~$ sudo parted /dev/sda unit s print
Model: ATA VMware Virtual I (scsi)
Disk /dev/sda: 2097152s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 63s 1220939s 1220877s primary
2 1220940s 2088449s 867510s primary ntfs
ubu...@ubuntu:~$ sudo blkid -c /dev/null
/dev/loop0: TYPE="squashfs"
/dev/sda1: UUID="3775e530-e9a4-4eeb-8c42-34cab4d90564" TYPE="ext2"
/dev/sda2: UUID="1F6A66977B9DD3E2" TYPE="ntfs"
/dev/ramzswap0: TYPE="swap"
ubu...@ubuntu:~$
Note the missing "ext2" file system type for partition number 1 in the
"parted ... print" output.
However if I mount the second partition and proceed to delete the
first partition, then when I recreate the first partition and format
it, parted is unable to recognize the file system on the first
partition.
Again, please be more specific.
My apologies again.
I have not been able to recreate the problem using parted alone.
The steps I use to demonstrate the problem in gparted are:
1) Begin with a disk device that has an msdos disk label, and two
primary partitions (/dev/sda1 and /dev/sda2 with file systems ext2 and
ntfs respectively).
2) Create a mount point, and mount /dev/sda2 on the mount point.
(e.g., mount /dev/sda2 /mnt/tempmnt)
3) Start gparted, select and delete /dev/sda1, and apply this operation.
4) Now select the unallocated space where /dev/sda1 used to be and
create a new partition with a file system (I used ext2). Apply this
operation.
5) After gparted finishes the device refresh, the /dev/sda1 partition
is shown, but with an unrecognized file system.
6) Exit gparted.
7) The parted print command will also "not recognize" the file system
as shown above.
8) The blkid command will display the file system as the proper type
("ext2" in this case). Also the /dev/sda1 partition can be mounted and
data written to the file system.
After thinking about this some more, this problem reminds me of another
problem in which gparted and parted did not recognize file systems after
partitions were re-ordered by fdisk:
http://parted.alioth.debian.org/cgi-bin/trac.cgi/ticket/201
https://bugzilla.gnome.org/show_bug.cgi?id=545361
This file system recognition problem seemed to disappear with
parted-1.9.0, but perhaps a regression has occurred?
It is also possible that the problem resides in the GParted code which I
maintain.
Regards,
Curtis Gedak
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