Red Hat Bugzilla – Bug 56757
mount -t cms hangs
Last modified: 2005-10-31 17:00:50 EST
Description of Problem:
The mount of cmsfs hangs.
Version-Release number of selected component (if applicable):
Linux version 2.4.9-17 (email@example.com) (gcc version 2.95.3
20010315 (release)) #1 SMP Fri Nov 23 19:45:36 CET 2001
But it hangs in all recent kernels in the same way.
Steps to Reproduce:
1. ipl cms
2. format 201 b
3. access 201 b
4. copyfile kern00t1 img a = = b
5. release b
6. ipl 200 -- Linux
7. login as root
8. modprobe cmsfs
9. mount -t cms -r /dev/dasdb1 /mnt/a
[zaitcev@test1 zaitcev]$ ps alx| grep mount
100 0 1040 1013 9 0 1684 608 down D pts/0 0:00 mount
Seems like a recursive semaphore somewhere.
^-t does not show stacks on s390
The cmsfs is not included into Linus or Marcelo trees,
it was in -ac only. We probably do not want to support cmsfs.
Maybe this only works if we have configured minidisks within VM? This
is at least unsupported at the moment, though it might be useful for
Florian La Roche
Created attachment 40507 [details]
I fixed it, but supporting cmsfs is not worth the trouble
unless someone wants to give non-root users access to CMS minidisks.
Good userspace tools are available.