ATA FLUSHCACHE

[Ollivier Robert]

According to Ollivier Robert:
> As soon as I try to get it working in a more disk-intensive (raidz in that
> case) way, it blows up with a panic.  It seems to point to a flaw in the
> ata driver which may not be managing semaphores/mutex correctly or maybe in
> the way it uses UMA zones (the panic starts there).

Allowing retries on ATA_FLUSHCACHE operations (by default they are not --
see ata-disk.c around line 280) gets me further but it still panics.
-- 
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto at keltia.freenix.fr
Darwin sidhe.keltia.net Kernel Version 8.8.2: Thu Sep 28 20:43:26 PDT 2006 i386