On Tuesday 29 January 2008, Alan Cox wrote: >> not one problem but lots---is sufficiently widespread that a Mini HOWTO, >> say, would be really welcome and, I'm guessing, widely used. > >We don't see very many libata problems at the distro level and they for >the most part boil down to > >- error messages looking different - Most bugs I get are things like >media errors (timeout looks different, UNC report looks different) > >- broken hardware - I've closed a whole raft of bugs that turn out to be >new PC systems where even the BIOS doesn't see the drives > >- faulty hardware being picked up because we actually do real error >checking now. We now check for and give some devices more slack while >still doing error checking. Both IDE layers also added blacklists for >stuff like the TSScorp DVD drives. Qemu has now had its bugs patched. > >- sata_nv with >4GB of RAM, knowing being worked on, no old IDE driver >anyway > >- pata_ali MWDMA with ATAPI, PIO works fine, all a bit of a mystery and >as it affects only a few chip variants hard to figure out. Workaround >libata.dma=1 > >- CS handling. On a few boxes using cable select (particularly on one >drive and not the other) shows up a problem, normally a failed SRST. >That's still under investigation. > >- Promise timeouts. The old IDE times out then polls the device and finds >the IRQ was never sent and then recovers so the user sees a short stall >but no errors. The new libata doesn't do this and pdc202xx_old thus >produces some error messages on some boxes. Backup polling is on my todo >list. As slight change here, I was going to use the same .config as 2.6.24-rc8, but just discovered that neither rc8 nor final is finding the drivers for my dvd writer while using libata, so its not useable. So I've enable a couple of things in the 2.6.24 build that aren't in the 2.6.24-rc8. When I find the magic twanger, I'll rebuild -rc8 with it too. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) River: "He didn't lie down. They never lie down." --"Serenity" - 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
