We are using the release version livecd tools we installed
using the yum tool. The version the package says is
PYTHON-IMGCREATE-17.11-1.FC17.I686. I am new to the mailing list and so
may not be exact about the terminologies you normally use. Pardon me for
We normally create custom fedora spins on top of Fedora
Electronic labs (FEL) using the base-on option. The ext partition size
in the FEL used to be 8gb and we had enough space to install over
packages. But now we wanted to create our custom spin over standard
fedora core image. But the partition size of the fedora core was 4GB and
there was not enough space in the partition to install our packages.
So we wanted to increase the partition size by 8gb and so we specified
the following in the kickstart file
part / --size=8192 --fstype ext4
The ext3.mg file size changed from 4Gb to 8Gb but the problem was the
partition size remained as 4 Gb only. So we tried to debug the issue.
After the ext3.img is copied from the base-on image, the following
code is executed.
in fs.py, the method _mount_instroot of class
LoopImageCreator, the following line (Line no:930)
calls the ExtDiskMount.mount() method (file:
fs.py Line no: 494). This method calls self.__create()
[ExtDiskMount.__create() file: fs.py line: 482] which calls
self.disk.create() (file: fs.py, line no:487). This function
[SparseLoopbackDisk.create() file: fs.py, line : 358] calls
self.expand(create=True) [SparseLoopbackDisk.expand(), file: fs.py,
line:331 ] and it changes the size of the file and does not change the
partition size. NOW IT SHOULD BE NOTED THAT THE SIZE OF THE FILE HAS
ALREADY INCREASED TO THE GIVEN SIZE BUT NOT THE PARTITION. Later in
ExtDiskMount.__create() [file: fs.py line: 482], the
self.__resize_filesystem() is called to resize the file system. In
__resize_filesystem() [ExtDiskMount.__resize_filesystem() file: fs.py
line: 467], the following logic checks [file: fs.py, line: 473]
size == current_size:
if the current size of the file (not
the partition size) is equal to the size asked to resize (which at this
stage will always be true) then return from the function.
So the logic
for resize2fs is never reached. So we commented out the above if
condition and tested the livecd and at this time the partition got
increased to 8gb and the custom spin was created successfully.
not very sure of the exact fix for the bug as I am not sure about the
reason behind calling expand [SparseLoopbackDisk.expand(), file: fs.py,
line:331 ] method.
It would be helpful for us if you rectify the bug
and let us know if our approach was right.
Karthikeyan G A
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