I am having problems with silent data corruption on (some) drives connected to an MCP55 SATA controller.
I have two servers, both running RELENG_7_0/amd64. One has the 570 Ultra chipset, the other has 570 SLI. Both chipsets have the MCP55 SATA controller. The server with 570 Ultra chipset has a bunch of older 250GB SATA-150 drives hooked up to the MCP55 controller and it is working just fine. The server with 570 SLI chipset has a bunch of new SATA-300 drives hooked up to the MCP55 controller and it is giving me silent data corruption (easily detectable by running ZFS scrub, every time I run it new checksum errors show up). I know the drives are good because when they are hooked up to another controller they work just fine. Unfortunately the drives does not have a jumper for setting SATA-150 speed (they are Samsung 1 TB drives), and trying to force the drives to SATA-150 speed with the "patch" provided by the manufacturer does not seem to work (the drives still negotiate SATA-300 speed). I will try to get my hands on another older SATA-150 drive (or a new that can be jumpered) to verify if the culprit is the MCP55 revision (see below) or the interface speed. NOT working (570 SLI) --------------------- [EMAIL PROTECTED]:0:5:0: class=0x010185 card=0x72501462 chip=0x037f10de rev=0xa2 hdr=0x00 vendor = 'Nvidia Corp' device = 'MCP55 SATA Controller' class = mass storage subclass = ATA Working (570 Ultra) ------------------- [EMAIL PROTECTED]:0:5:0: class=0x010185 card=0xcb8410de chip=0x037f10de rev=0xa3 hdr=0x00 vendor = 'Nvidia Corp' device = 'MCP55 SATA Controller' class = mass storage subclass = ATA This is most likely related to kern/120296 (http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/120296) and kern/121396 (http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/121396). If someone else is having data corruption problems with drives connected to an MCP55 controller it might be worth testing if limiting the drives to SATA-150 makes a difference. It will most likely take me a while before I can verify this. --- Daniel Eriksson (http://www.toomuchdata.com/) _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"