Messages in this thread | | | Date | Thu, 30 Jul 1998 07:08:21 -0400 (EDT) | From | John Alvord <> | Subject | Re: Corruption Stats (fwd) |
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Is that why my work NT system pauses during shutdown, and the pause is much longer then OS/2 used to? john alvord
On Thu, 30 Jul 1998, Rob Hagopian wrote:
> It's not true though, Apple had a BIG problem with this at one point - > they started shipping computers with the write cache enabled on the > internal drives (and it was about time). Of course, the Macs all have > software power-off (<ob Macs rule> ;-) and the file system would get > corrupted. IIRC, the solution was simply to delay long enough for the > caches to flush automaticly. > -Rob H. > > On Wed, 29 Jul 1998, Linus Torvalds wrote: > > > On Thu, 30 Jul 1998, Stefan Traby wrote: > > > > > > BTW: A drive following the SCSI-specs may cause disk-corruption > > > under Linux (WCE=1). Data may still be in write-cache after > > > shutdown and power-off. (I miss "synchronize cache"). > > > This is for shure a theoretical problem, but a practical bug. > > > Or did I miss something ? > > > > No, you didn't miss anything. > > > > The thing has been discussed occasionally (very occasionally), and I don't > > know what the proper response is. According to some people the better > > drives make sure that they have enough rotational energy that they can > > make sure they get their data written out even after powerdown, but > > personally that sounds like science fiction to me (oh, I wouldn't be > > surprised if there are some drives that do it, but I'd be surprised if > > it's universal). > > > > Of course, Linux itself won't ever shut off the power, so it's more a > > matter of "when can you safely say 'System halted.'" than anything else. > > The kernel does support some shutdown features, but the disk is not on > > that list. > > > > Linus > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html >
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