> BTW, can you point me to the reasons for chosing XFS in such an
> environment?
XFS is very reliable and performs extremely consistently over the expected life of such devices? And XFS tends to perform better on NAS workloads than ext3/4 on the same hardware? And that mkfs doesn't make the user wait for a *long time* before they can use the device? And that there are tools in xfsprogs designed to optmise the manufacturing process (e.g. xfs_copy), and so on?
> By "consumer" are you referring to the sub-$200 stuff that can be
> bought at, say, BEST BUY?
Yes, exactly. Brands like thecus, netgear, dlink, etc either use XFS by default or recommend it over ext3/4 in most situations.
> I have a few Buffalo router/NAS devices.
I'm pretty sure they use XFS, too. Certainly google indicates that even the low end buffalo NAS boxes go faster with XFS on them....