On Wed, 2006-12-20 at 20:16 -0800, Bob Stewart wrote: > Sorry, that should have been "logblocks". As shown below, it works unless the > partition is such that logblocks will be larger than 16383. In fdisk, that > number of cylinders anything greater than 16709. "Works" is relative, though. > When doing a copy of several gigabytes, the syslog shows periodic device > errors, which I have posted previously. Each time, it lowers the access rate > until it eventually reaches PI04. [...] > Here is the fdisk screen for the above disk. If I use a figure larger than > 16709 cylinders mkfs.xfs will not be successful. > > Disk /dev/sda: 200.0 GB, 200049647616 bytes > 255 heads, 63 sectors/track, 24321 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/sda1 1 16709 134215011 83 Linux Its probably significant that the problem appears at >137GB. I've got a similar issue with a 320GB drive I've just tried to use. I've not pinned down the limit but I partitioned the drive in two and the first half works, the second half gives corrupt superblock errors when trying to mount it (ext3). I tried both the 2.6.19 version and one based on 2.6.20-rc4, same problem. Is there anything specific the driver needs to do work with disks > 137GB? I've just tried to grab the datasheet but the Initio webserver has chosen this moment to act up... Richard - 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