> Nathan Kroenert wrote: > > For what it's worth, I started playing with USB + > flash + ZFS and was > > most unhappy for quite a while. > > > > I was suffering with things hanging, going slow or > just going away and > > breaking, and thought I was witnessing something > zfs was doing as I was > > trying to do mirror recovery and all that sort of > stuff. > > > > On a hunch, I tried doing UFS and RAW instead and > saw the same issues. > > > > It's starting to look like my USB hubs. Once they > are under any > > reasonable read/write load, they just make bunches > of things go offline. > > > > Yep - They are powered and plugged in. > > > > So, at this stage, I'll be grabbing a couple of > 'better' USB hubs (Mine > > are pretty much the cheapest I could buy) and see > how that goes. > > > > For gags, take ZFS out of the equation and validate > that your hardware > > is actually providing a stable platform for ZFS... > Mine wasn't... > > That's my experience too. USB HUBs are cheap [ expletive deleted ] > mostly...
What do you expect? They're mostly consumer-grade, which is to say garbage, rather than datacenter-grade. And it's not just USB hubs - I've got a consumer-grade external modem, and I swear it must have little or no ECC and/or watchdog, because I have to power-cycle it every so often. Wish I had a lead box to put it in to shield it from the cosmic rays, maybe that would help... This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
