Messages in this thread | | | Date | Sat, 25 Dec 1999 17:34:49 -0500 | From | Vladislav Malyshkin <> | Subject | IDE signed/unsigned problem in /proc (2.2 Kernel) |
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It looks like there is a problem in 2.2.12-20 (RedHat 6.1) in signed/unsigned conversion for IDE disk geometry. On a computer with 4Gb IDE the cat /proc/ide/hda/geometry gives physical 8930/15/63 logical 525/255/63 which are correct values.
In the same time on a computer with 27 Gb IDE I have: cat /proc/ide/hda/geometry physical -12781/16/63 logical -12781/16/63
It prints negative values which are obviously incorrect. I expect some kind of signed/unsigned conversion problem.
The hdparm print correct values in both cases:
For 4Gb IDE: /sbin/hdparm /dev/hda
/dev/hda: multcount = 0 (off) I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 525/255/63, sectors = 8439184, start = 0
For 27 Gb IDE /sbin/hdparm /dev/hda
/dev/hda: multcount = 0 (off) I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 52755/16/63, sectors = 53177040, start = 0
Vladislav
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