Date: Wed, 8 Oct 2014 21:28:05 -0700 From: Nick Sivo <nick@ycombinator.com> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Next Steps to Debug ZFS Hang? Message-ID: <CAM72HBZvpXSeVMjQvWGiKhqeosMzxDBr9zAFJ8h7QByfhd7%2BUQ@mail.gmail.com> In-Reply-To: <DAA5D9129F9D691C69C7A2EF@192.168.1.50> References: <1412732931033.813626ca@Nodemailer> <DAA5D9129F9D691C69C7A2EF@192.168.1.50>
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Hi Daniel, > Not sure if this will be helpful, but at least it shouldn't hurt: When was > the last time you ran a scrub? Also, how much RAM do you have and where is > your swap? (The only times I've had permanent hangs from ZFS was when I ran > out of RAM and was trying to swap to ZFS...) The server has 64GB ECC RAM, and no swap at the moment. I've since rebooted the box, but a scrub today revealed no errors, and there was nothing in the console or any log files about disk or controller errors or timeouts. I was able to get kernel call stacks with procstat: https://gist.github.com/kogir/49ff76f95b0b3be3e80e Thanks, Nick
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