Re: Warnings on shutdown (Debian Etch and Kernel 2.6.22.9)
Renato S. Yamane wrote:
> Tejun Heo wrote:
> >Renato S. Yamane wrote:
> >>Jim Paris wrote:
> >>>For Debian, I don't think there are any complete solutions yet.
> >>>The related bug is
> >>>http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=426224
> >>
> >>I think that we can fix this if someone can answer this:
> >>
> >>$ man halt
> >>"-h flag: This is important for IDE drives, since the kernel doesn’t
> >>flush the write cache itself before power-off.."
> >>
> >>How can I know if kernel write cache itself? :-)
> >
> >Kernel has been flushing write cache for many many years now. Man page
> >needs update. Also, flushing cache from halt is okay. What's hurting
> >is spinning down the drive from halt.
>
> So, I think that halt script need know:
>
> - How many and who is IDE drives and SCSI/SATA drives.
> - Devices with manage_start_stop as "0" or without manage_start_stop
> need "halt -h".
> - Devices with manage_start_stop as "1" need only "halt".
>
> This is correct?
The real changes need to be made in the shutdown utility,
as described here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=426224#10
-jim
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