zfs+smb checksum errors

[Martin Simmons]

>>>>> On Tue, 28 Sep 2010 17:01:47 -0700 (PDT), Scott Johnson said:
> 
> I've been running FBSD 8.0-rel and now 8.1-rel for 6 months or so, with a 4 disk 
> raidz, weekly scrubs. Never saw a checksum error until last week when I got 
> about 5 during operation, followed by another 10 or so on the next scrub.
> 
> They all occurred when I was accessing the server through SMB from my WinXP 
> desktop. I've been doing this for months, transferring files to and from 
> regularly, but this was the first time I'd been doing simultaneous heavy reading 
> & writing.
> 
> I was running Imgburn on WinXP, creating an iso file from folders. Both source 
> files and destination iso file were on the same SMB share on the FBSD server.
> 
> After all the checksum errors, there was 1 unrecoverable error, on one of the 
> destination iso files.
> 
> There are 0 read errors, 0 write errors, and 0 new SMART errors on the 4 disks. 
> The checksum errors were spread roughly equally across the 4 disks. All of which 
> leads me to believe this is a software problem at the filesystem level.

Or maybe it is some other hardware problem, such as the disk controller or
RAM?

__Martin