Messages in this thread | | | Date | Tue, 15 Jan 2008 00:38:18 +0100 | From | "J.A. Magallón" <> | Subject | Re: Linux 2.6.24-rc7 |
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On Mon, 14 Jan 2008 08:57:35 +0900, Tejun Heo <htejun@gmail.com> wrote:
> J.A. Magallón wrote: > > I'm still pending to pysically remove the disks (or at least unplug the > > cable...), but I have realized a cusious thing: after some errors, the > > kernel is lowering the disk speed (UDMA/133, then 100, then 33): > > That's the standard error handling behavior. Timeouts are likely to > indicate transmission problems so libata puts it into slower gear. > > > Perhaps this gives a clue. > > Or I just had bad luck and 2 of my 4 disks broke at the same time. > > As I said, the first thing I would try is to connect the drives to a > separate PSU and re-seating cables as you're seeing problems on two > drives simultaneously. >
I finally found the bad drive (the most obvious one as I would expect, it was recycled from an older box...). I tried removing completely the drive from power and controller, and then running with it powered but not connected. No single error any more on any of the other 3 drives. I have been updating my distro, rebuilding the rpm database, moving big files between drives, even all at the same time. No error.
I can't believe it, but a bad drive was causing timeouts on other drive _on other controller_, the bad one was attached to the Promise and the good ones on the ICH5 SATA (both integrated in motherboard). Or there is a strange interaction in my board (Asus PC-DL), or there is a nasty bug in the kernel...
-- J.A. Magallon <jamagallon()ono!com> \ Software is like sex: \ It's better when it's free Mandriva Linux release 2008.1 (Cooker) for i586 Linux 2.6.23-jam05 (gcc 4.2.2 20071128 (4.2.2-2mdv2008.1)) SMP PREEMPT -- 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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