Bug#244915: marked as done (Serious Bug: FAT32)
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Subject: Serious Bug: FAT32
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Date: Tue, 20 Apr 2004 18:25:00 +0200
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Package: Kernel
--
Frank Klemm
AIM Advanced Imaging Microscopy
phone: +49 (36 41) 64-27 21
fax: +49 (36 41) 64-31 44
mailto:f.klemm@zeiss.de
Subject:
Package:
- Kernel
Bug 1:
- When using FAT32 as file system on a 128 GB+ partition, you continuously
loss data.
Status:
- Serious, hidden data loss
Known background:
- It looks like directory entries are not updated correctly when there's
is
more than 128 GByte
used data on a FAT32 partition. You get files with a size of 0 bytes and
lost cluster clains.
No warning in log files. Often also the root directory of the partition
grows to fantastic sizes
(2...3 MByte for instance).
Other remarks:
- My experiences with Linux in the last 7 years show that systematic
testing is a serious problem
with Linux. When I bought my first 80 Gbyte HD, Linux was unable to
address 32+ Gbyte harddisks.
In the time where 300 Gbyte HD are available, still 128 GB+ is untested.
There must be systematic tests with up-to date hardware, currently there
should be all file systems
tested with partitions greater than 2^31 (RAID 0, 4xATA 300 GB) and
greater than 2^32 blocks
(RAID 0, 7xATA 300 GB). Fixing bugs when users trap into it is much too
late.
Bug 2:
- FAT32 Filenames which can be stored as 8.3 and which have no lower case
letters (ABBA, UB40, U2, TIPA)
are displayed wrong.
Status:
- No critical, but really ancient
$ mkdir ABBA
$ ls
abba
$ ls ABBA
ABBA
$ ls A*
No such file or directory: A*
$ rmdir A*
No such file or directory: A*
$ ls -la ABBA
ABBA
$ cd ABBA
$ pwd
/Audio/Artists/ABBA
$ ls ../A*
No such file or directory: ../A*
$ _
--
Frank Klemm
AIM Advanced Imaging Microscopy
phone: +49 (36 41) 64-27 21
fax: +49 (36 41) 64-31 44
mailto:f.klemm<-at->zeiss.de
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Date: Thu, 19 Aug 2004 18:26:38 +0200
From: Christoph Hellwig <hch@lst.de>
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The patch that fixes this has been in both 2.4 and 2.6 for a while.
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