[Jfs-discussion] Weird "lockup" problem with JFS v1.0.0 (kernel 2.2.19)

[Ivan P. <iv...@cy...>]

Hello,

Today, after hearing about the release of JFS 1.0.0, I decided to give 
it a try. So, I followed the instructions on how to convert an ext2 
filesystem to JFS, available at:

http://oss.software.ibm.com/developer/opensource/jfs/project/pub/jfsroot.html

, and I had an "interesting" problem, so I hope you guys can help me 
with it. :)

Up to section 3.2 of the document (Create the JFS Filesystem), no 
problems at all. My environment is as follows:

- /dev/hda2 : current root partition (ext2)
- /dev/hdc1 : JFS partition on a different HD (I'll boot from this HD 
  once the process is complete)
- /tmp/hdimg: directory with the image that I'll transfer to /dev/hdc1

I created the JFS filesystem with 'mkfs -t jfs /dev/hdc1', and all 
went well. I could also mount the JFS partition with 
'mount -t jfs -w /dev/hdc1 /mnt/hdc1' without problems, and then mount 
gives the following output:

/dev/hda2 on / type ext2 (rw)
none on /proc type proc (rw)
none on /dev/pts type devpts (rw,mode=0622)
/dev/hdc1 on /mnt/hdc1 type jfs (rw)

However, when I try to copy files from /tmp/hdimg to /mnt/hdc1 , the 
process hangs in D state.

# cp -a /tmp/imghd/* /mnt/hdc1
[prompt never comes back]

[Through another shell, I can check that ...]
# ps ax | grep cp
  476 ttyS0    D      0:00 cp -a /tmp/nl4000_img/System.map (...)
#

Any clues / suggestions?? Any help would be highly appreciated.

Later,
Ivan