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Previously, when the dosfsck and the dosfslabel utilities were executed on the S390x architecture using a FAT32 file system, they terminated with this error message: "Logical sector size is zero". This was caused by unaligned fields which were first byte-wise copied. With this fix, the fields are not pre-copied any more, but are accessed the same way as on the i686 architecture.
Description of problem:
Every time dosfsck or dosfslabel are executed on s390x, using an otherwise valid FAT file system, they print:
Logical sector size is zero.
and don't do what they're told to do.
Version-Release number of selected component (if applicable):
dosfstools-3.0.9-3.el6
How reproducible:
Always
Steps to Reproduce:
1. dd if=/dev/zero of=dosfs bs=1M count=33
2. mkdosfs dosfs
3. dosfslabel dosfs
or: dosfsck dosfs
Additional info:
This change fixed the problem for me:
# diff boot.c-unaligned boot.c
62c62
< #if defined __alpha || defined __arm || defined __ia64__ || defined __s390x__
\
---
> #if defined __alpha || defined __arm || defined __ia64__ \
Comment 1Jaroslav Škarvada
2010-10-06 12:08:21 UTC
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
Previously, when the dosfsck and the dosfslabel utilities were executed on the S390x architecture using a FAT32 file system, they terminated with this error message: "Logical sector size is zero". This was caused by unaligned fields which were first byte-wise copied. With this fix, the fields are not pre-copied any more, but are accessed the same way as on the i686 architecture.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2011-1552.html
Description of problem: Every time dosfsck or dosfslabel are executed on s390x, using an otherwise valid FAT file system, they print: Logical sector size is zero. and don't do what they're told to do. Version-Release number of selected component (if applicable): dosfstools-3.0.9-3.el6 How reproducible: Always Steps to Reproduce: 1. dd if=/dev/zero of=dosfs bs=1M count=33 2. mkdosfs dosfs 3. dosfslabel dosfs or: dosfsck dosfs Additional info: This change fixed the problem for me: # diff boot.c-unaligned boot.c 62c62 < #if defined __alpha || defined __arm || defined __ia64__ || defined __s390x__ \ --- > #if defined __alpha || defined __arm || defined __ia64__ \