On Saturday 27 March 2010 03:09:35 am David Fries wrote: > On Fri, Mar 26, 2010 at 08:42:26PM -0400, Jeff Garzik wrote: > > On 03/26/2010 08:36 PM, David Fries wrote: > >> On Fri, Mar 26, 2010 at 08:12:26PM -0400, Jeff Garzik wrote: > >>> On 03/26/2010 07:21 PM, David Fries wrote: > >>>> The kernel fails to see the entire disk with 2.6.34-rc2 with VIA > >>>> vt82c586b chipset. I tracked it down to commit > >>>> f931a5d5785d7b7c44871bd7ad2762e29dfddf29 "via82cxxx: workaround h/w > >>>> bugs" and reverting just that one solves the problem, or just > >>>> commenting out just one outb write in that change. > >>>> > >>>> via82cxxx 0000:00:07.1: VIA vt82c586b (rev 41) IDE UDMA33 > >>>> via82cxxx 0000:00:07.1: IDE controller (0x1106:0x0571 rev 0x06) > >>>> via82cxxx 0000:00:07.1: not 100% native mode: will probe irqs later > >>>> > >>>> Note the kernel panic is intentional as I'm given the test kernel an > >>>> invalid root device, so that I can suspend to disk, try a kernel, > >>>> resume and pick up where I left off. It does have a side benefit of > >>>> dumping the size of all partitions. > >>>> > >>>> 2.6.34-rc2 unmodified, fails and sees 30985416 KiB for the last > >>>> partition. > >>>> ide-gd driver 1.18 > >>>> hda: max request size: 128KiB > >>>> hda: 66055248 sectors (33820 MB) w/7936KiB Cache, CHS=65531/16/63 > >>>> hda: cache flushes supported > >>>> hda: hda1 hda2 hda3 > >>>> hda: p3 size 236037312 exceeds device capacity, enabling native capacity > >>>> hda: p3 size 236037312 exceeds device capacity, limited to end of disk > >>>> ide-cd driver 5.00 > >>>> ... > >>>> Please append a correct "root=" boot option; here are the available partitions: > >>>> 0300 33027624 hda driver: ide-gd > >>>> 0301 49391 hda1 > >>>> 0302 1992816 hda2 > >>>> 0303 30985416 hda3 > >>>> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(22,2) > > > All these errors related to unknown-block(22,2) are it trying to find > > /dev/hdX, when libata uses the SCSI block devices /dev/sdX > > > > These errors are unrelated to HPA, and are a standard issue encountered > > when moving from legacy IDE driver to libata. > > added > libata.dma=0 libata.ignore_hpa=1 > and it's showing the full disk again, thanks for pointing that out, > I'm just not used to giving module parameters on the kernel command > line. Now I'll see what Bartlomiej Zolnierkiewicz has to say about > his patch which broke via82cxxx. Please bring upstream IDE problems with upstream kernel maintainer. I have very little control over what people are doing with some (taken out of much larger context) atang-specific patches posted for review to kernel mailing lists and over quality of integration/testing work that should always accompany upstream merge. The commit itself may also have a problem but since it was _never_ in linux-next tree it never saw a wider upstream testing. Moreover upstream doesn't use unified driver source (atang tree does) which makes makes debugging and long-term maintenance more time consuming than necessary. I'm sorry to hear about your problem but it is not my fault and I prefer using my _private_ time in more constructive ways.. -- Bartlomiej Zolnierkiewicz -- 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
