Tejun Heo wrote: ..
sd forces disk revalidation (and thus ordered reconfiguration) if you change cache mode via /sys/class/scsi_disk/X\:0\:0\:0/cache_type.
That's not implemented for libata --> the emulation in libata-scsi rejects any attempt at a MODE_SELECT command, which is what the sysfs attr triggers. Wasn't there a patch to implement MODE_SELECT in libata once upon a time? Cheers -- Mark Lord Real-Time Remedies Inc. mlord@xxxxxxxxx - : 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
