jbsnyder wrote: > Hi - > > I'm not yet filing a PR on this since I'm wondering if anyone else has > experienced this issue. I've got ZFS running on a raid-z with 4 disks, > C2Duo 2.33 Ghz, 64-bit FreeBSD 7 release, 4GB RAM. For the most part this > has been working perfectly, but I recently I tried using transmission-daemon > (a bittorrent client/daemon) to download a few things and noticed that if it > runs for an extended period of time, a lot of processes are waiting on zfs > and just hang. If I'm not logged in while this is happens, SSH access > hangs. Also, if I manage to be logged in, AFP access to the volume, and > some heavier disk access items (like building from ports at stages of > unzipping archives and checksumming) seem to hang as well. > > I've not done extensive testing, but the same behavior has been exhibited > both times I've tried it. The interesting thing is that the transmission > seems to keep on chugging, and does finish downloading eventually, it's just > that everything else doesn't get a chance at getting some IO, even if I kill > the transmission-daemon. > > I've done the recommended tweaks on the freebsd wiki for AMD64 machines, and > I'm running ULE. Otherwise things are pretty standard. > > I'll file a more detailed PR with some additional testing if nobody else has > encountered this and/or has a workaround.
http://wiki.freebsd.org/ZFSKnownProblems This looks like #1.
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