Messages in this thread | | | Date | Tue, 19 Mar 2002 22:21:30 +0100 | From | Pavel Machek <> | Subject | Re: [patch] My AMD IDE driver, v2.7 |
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Hi!
> > > commands. With the proper sequencing, you can even do power management > > > of the drives in userspace. You don't want to do system suspend/resume > > > that way, but you can certainly have a userspace policy daemon running, > > > that powers-down and powers-up the drives, etc. > > > > See noflushd, Hdparm is able to powersave disks well, already, and it > > was in 2.2.X, too. > > Not all of them safely, though. Many a drive will corrupt data if it > receives a command when not spinned up. You need to issue a wake command > first, which hdparm doesn't, it just leaves it to the kernel to issue a > read command or whatever to wake the drive ...
Is this common disk bug, or are they permitted to behave like that?
Pavel -- Casualities in World Trade Center: ~3k dead inside the building, cryptography in U.S.A. and free speech in Czech Republic. - 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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