On Sat, Jan 19, 2008 at 07:28:29PM -0700, Grant Grundler wrote: ... > Thanks for reminding me...I had collected strace output of udev and all > it's children a few days ago (probably with 2.6.22-14-generic (Ubuntu > kernel). I've appended everything for PID 17972 (which is only 12k, full > output is 559KB). Key bit is this: > 17972 _llseek(3, 31129600, [31129600], SEEK_SET) = 0 > 17972 read(3, <unfinished ...> > 17972 <... read resumed> 0x804dc80, 512) = -1 EIO (Input/output error) > > given the device reports "60801 512-byte hardware sectors (31 MB)" > and "31129600/512 == 60800"...it's obvious vol_id is trying to read > the last sector on the disk (I assume it's to verify the size). > ISTR "reading the last sector" caused problems else where. > I'll try to hunt that down. That was too easy. http://www.cs.helsinki.fi/linux/linux-kernel/2001-23/0960.html Is 1K alignment still a problem? Or I have to add the HP r707 to some list per comments from this patch: http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc2/2.6.17-rc2-mm1/broken-out/git-ieee1394.patch + * - fix capacity + * Tell sd_mod to correct the last sector number reported by read_capacity. + * Avoids access beyond actual disk limits on devices with an off-by-one bug. + * Don't use this with devices which don't have this bug. hunting more... grant - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
