Re: Loud "pop" coming from hard drive on reboot

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Alan Cox wrote:

Thought about that and querying power state before doing shutdown sequence but things get somewhat ugly because shutdown sequence is driven from sd->shutdown(). We'll have to snoop both sync and shutdown commands and check whether the system is shutting down. Also, I felt very uneasy about faking successful completion to SYNCHRONIZE_CACHE.

If you see a synchronize cache succeed and you then see the drive
shutdown succeed then you know that a sync cache can be faked as ok
safely. Any other command in between or after and it doesn't get faked

This seems pretty easy to deal with at command issue.

I dunno. It's already too late for 2.6.21. I was hoping we could get distros to update shutdown utilities in not-too-distant future but I have no experience with that. Is that just a wishful thinking?

Probably not, but it will take a year or so and throughout this time
period everyone with the wrong combination of shutdown and kernel (which
will be a lot of people who compile their own kernels) are going to have
problems caused by what is a very obscure piece of libata internal
behaviour they'll never even know about.

So this is the pop I hear on my new laptop that is using libata=combined_mode when I shut my system down. I didn't get the pop with the same disk drive in an older laptop that was only ide. It sounds like a relay closing or opening, but is really my
drive head doing an emergency retract/park?

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/



--

"They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin)

"The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson)



-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux