Messages in this thread | | | Date | Thu, 17 Nov 2005 23:33:40 +0100 | From | Pavel Machek <> | Subject | Re: Laptop mode causing writes to wrong sectors? |
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Hi!
> let me start by stating that the following is mainly guessed. I may be > completely wrong. Still I think you may be interested in my > observations, and perhaps you already got similar reports? > > On my laptop, running 2.6.14, I'm observing some strange file- and > filesystem corruptions. First, I thought it may have been caused by an > ext3 bug because the first corruption I did observe happened shortly > after an ext3 journal replay. > > I did report this to linux-kernel, but without any helpful response: > http://www.ussg.iu.edu/hypermail/linux/kernel/0511.0/0129.html > (Subject: ext3 corruption: "JBD: no valid journal superblock found") > > But now, I got another hint pointing to a possible cause of this > problem: I found a file - /usr/lib/libatlas.so.3.0 - which was corrupted > by 4k of it being overwritten by a different file, which I recognized. > And that file happened to be an uncompressed manual page. > > As usually the manual pages are only stored compressed, this must have > happened when I actually did look at that manual page, which causes the > uncompressed version to be written to a file in /tmp/. And the best is: > I actually remember when I did read that man page, and it was while the > notebook ran on battery power, which is quite seldom. On battery power, > I have laptop mode activated and the hard disk spun down after a short > idle time. > > Why do I think this is related to the corruption? Well, on the one hand, > I'm compiling kernels quite often, tracking linus' git repository, > and
Can you try some filesystem test while forcing disk spindowns via hdparm?
It may be bug in laptop mode, or a bug in ide (or something related)... trying spindowns without laptopmode would be helpful.
Pavel -- Thanks, Sharp! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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