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Known bugs:
-----------
- Support for 2.3.XX is broken now. It is uder development and is targeted
to 2.3.30 and higher. MMAP support for 2.3.XX is missing and MMAP will
lead to Oops.
- In some 2.1.XX kernels umsdos support is broken. Get at least 2.1.94
if you want to use umsdos-style long filenames in CVFs. For 2.0.xx
and 2.2.x kernels everything is okay.
- Advanced memory allocation (XMALLOC) may crash a 2.1.xx/2.2.xx system.
I once got a report of a serious crash with old dmsdosfs. The code
for XMALLOC has never been changed, but the kernel keeps changing...
It is known to work without problems under 2.0.xx.
- Writable mmap support must be turned *on* for newer 2.1.xx and all 2.2.xx
kernels. The code fails to compile if it is switched off, so you'll see it
quite early :)
- Mounting with the cvf_format=xxx mount option may succeed even if the
specified format xxx is not present. The CVF-FAT interface does auto-
detection if an invalid format is specified. This was meant as a feature
but seems to cause confusion. In rare cases it may lead to a CVF accessed
by the plain FAT driver (which does not complain on mount but it will
scream loudly when, for example, a 'ls' is done on the mount point).
This bug is fixed by updating the file cvf.c as described in INSTALL.TXT.
Kernel bugs related to using dmsdos
-----------------------------------
- vfat brelse bug
Priority: Serious.
Affected kernels: 2.2.0, 2.2.1, 2.2.2, probably late 2.1.xx.
Fixed since: --not yet fixed, hopefully fixed in 2.2.3 or 2.2.4--
Symptom: Kernel panics with "VFS: LRU list corrupted" and hangs.
Fix: See file patches/DIFFS.TXT for a patch.
- fat truncate bug
Priority: Minor.
Affected kernels: all 2.0.xx, all 2.1.xx, 2.2.0, 2.2.1, 2.2.2.
Fixed since: --not yet fixed, hopefully fixed in 2.2.3 or 2.2.4--
Symptom: Kernel can write to read-only mounted CVF and corrupt the FAT.
Happens very rarely and requires a slightly damaged filesystem
to provoke this bug.
Fix: See file patches/DIFFS.TXT for a patch.
- msdos rmdir bug
Priority: Minor.
Affected kernels: 2.0.34, 2.0.35, FAT32-patched 2.0.33 or earlier,
some 2.1.xx (unknown which ones)
Fixed since: 2.0.36, unknown for 2.1.xx
Symptom: Removing non-empty directories succeeds but leaves lost cluster
chains behind.
Fix: See file patches/DIFFS.TXT for a patch.
- fat add cluster / fat extend dir for 2.3.xx
Priority: Serious.
Affected kernels: 2.2.?-2.2.13+, 2.3.?-2.3.30+
Fixed since: --not yet fixed, hopefully fixed in 2.2.15 and 2.3.31--
Symptom: File or directory (only dir for 2.3.x) cannot be enlargered.
Fix: See file patches/DIFFS.TXT for a patch.
- fat read super
Priority: Serious.
Affected kernels: 2.3.?-2.3.30+
Fixed since: --not yet fixed, hopefully fixed in 2.3.31--
Symptom: Oops during CVF mount phase.
Fix: See file patches/DIFFS.TXT for a patch.
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