kern/116935: [ata] Intermittent error with Promise PDC40718

[Peter B]

The following reply was made to PR kern/116935; it has been noted by GNATS.

From: Peter B <pb at ludd.ltu.se>
To: ml at netfence.it (Andrea Venturoli)
Cc: bug-followup at freebsd.org
Subject: Re: kern/116935: [ata] Intermittent error with Promise PDC40718
Date: Tue, 26 Jun 2012 01:42:14 +0200 (MEST)

 >I've had gobs of troubles with this hardware and agreed with the "Don't 
 >use" statement (I also had troubles with other SATA controllers, however).
 >
 >With two HDs it used to crash and/or lock the system: I tried different 
 >HD vendors, different MBs, different FreeBSD versions and architectures, 
 >but nothing would help.
 
 After the Promise trouble, I bought a cheap S-ATA controller which
 "just worked".
 
 >This was however until I tried 9.0 release.
 >I don't know if the reason is the "new CAM-based ATA stack", but it's 
 >been working flawlessly with four HDs for weeks now.
 
 If there's one bug in the silicon. One might wonder if there's others too.
 Let's hope the new driver can handle the bug without suprises when the disc
 is full with important data.