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. scsi0 : pata_via scsi1 : pata_via ata1: PATA max UDMA/33 cmd 0x1f0 ctl 0x3f6 bmdma 0xe400 irq 14 ata2: PATA max UDMA/33 cmd 0x170 ctl 0x376 bmdma 0xe408 irq 15 ata1.00: HPA unlocked: 66055248 -> 240121728, native 240121728 ata1.00: ATA-7: Maxtor 6Y120P0, YAR41BW0, max UDMA/133 ata1.00: 240121728 sectors, multi 16: LBA ata1.00: configured for PIO4 scsi 0:0:0:0: Direct-Access ATA Maxtor 6Y120P0 YAR4 PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 240121728 512-byte logical blocks: (122 GB/114 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sd 0:0:0:0: [sda] Attached SCSI disk ata2.01: ATAPI: PLEXTOR CD-R PX-W4012A, 1.06, max UDMA/33 ata2.01: configured for PIO4 scsi 1:0:1:0: CD-ROM PLEXTOR CD-R PX-W4012A 1.06 PQ: 0 ANSI: 5 ... VFS: Cannot open root device "1602" or unknown-block(22,2) Please append a correct "root=" boot option; here are the available partitions: 0800 120060864 sda driver: sd 0801 49391 sda1 0802 1992816 sda2 0803 118018656 sda3 Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(22,2) -- David Fries <david@xxxxxxxxx> http://fries.net/~david/ (PGP encryption key available) -- 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
