Am Di, 2003-08-12 um 22.45 schrieb Tupshin Harper:Yes, I'm already converting to such a setup as I type this. I thought that a data corruption issue was worth mentioning, however. ;-)
I have an LVM2 setup with four lvm groups. One of those groups sits on top of a two disk raid 0 array. When writing to JFS partitions on that lvm group, I get frequent, reproducible data corruption. This same setup works fine with 2.4.22-pre kernels. The JFS may or may not be relevant, since I haven't had a chance to use other filesystems as a control. There are a number of instances of the following message associated with the data corruption:
raid0_make_request bug: can't convert block across chunks or bigger than 8k 12436792 8
The 12436792 varies widely, the rest is always the same. The error is coming from drivers/md/raid0.c.
Why don't you try using an LVM2 stripe? That's the same as raid0 does.
And I'm sure it doesn't suffer from such problems because it's handling
bios in a very generic and flexible manner.