Bug 156659 - mount does not autosense cramfs image
Summary: mount does not autosense cramfs image
Alias: None
Product: Fedora
Classification: Fedora
Component: e2fsprogs
Version: rawhide
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Thomas Woerner
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2005-05-02 22:51 UTC by Mike McLean
Modified: 2007-11-30 22:11 UTC (History)
2 users (show)

Clone Of:
Last Closed: 2005-09-01 12:53:57 UTC

Attachments (Terms of Use)
libblkid cramfs bugfix (1.69 KB, patch)
2005-05-03 12:37 UTC, Karel Zak
no flags Details | Diff

Description Mike McLean 2005-05-02 22:51:47 UTC
* util-linux-2.12p-8
* glibc-2.3.5-4
* kernel-2.6.11-1.1276_FC4

Take a cramfs image (like stage2.img from the install disc) and try to 
mount it with mount -o loop.  Mount fails to autosense the fstype and the mount
fails.  If -t cramfs is added to the command line, the mount succeeds.

Furthermore, when the mount -o loop fails, the loop device is not freed. So
after running this command a few times you find yourself completely out of loop

Comment 2 Karel Zak 2005-05-03 12:37:41 UTC
Created attachment 113959 [details]
libblkid cramfs bugfix

The problem is with the libblkid (from e2fsprogs package). There's wrong cramfs
magic number. The patch contains:

- fix of cramfs magic number
- support for cramfs LABELs

I sent it to e2fsprogs upstream too.

Comment 4 Karel Zak 2005-09-01 12:53:57 UTC
Fixed in FC4|5. The problem is unimportant for RHEL3|4 where is the mount
command without libblkid. Closing...

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