On Mon, Dec 03, 2007 at 05:09:54PM +0100, Krzysztof B??aszkowski wrote: > > I noticed also another failure when i removed a drive. The event was not > notified by anything (ie the block device and corresponding sg were > registered) so i run dd on this truly "virtual" drive. > > dd reached D state (as well as scsi_wq) . i think it shouldn't happen no > matter it was AIC failure or LSI expander failure. "It's wireless!" ;) Seriously, though, it's a good idea to tell the kernel that you're about to unplug a disk before actually doing it: echo 1 > /sys/block/sdX/device/delete This way, the kernel can tell the disk to flush its caches long before power actually gets removed. Otherwise, the device removal code can get hung up just like you observed, and whatever's in the write cache may or may not actually get written to the media. --D - 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
