May 2014

named: error sending response: host unreachable

Every day for weeks I’ve been seeing these entries in my logs: I could ignore them, but that’s not in my nature. I want to know why this is occurring and fix it. Attempting to find the source, I started a tcpdump on the host: That wasn’t much help. I think I should have logged it to a file. After seeing the log messages again today, and while a little bit of unexpected […]

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Nagios plugin for pkg audit (replacing portaudit) on FreeBSD

I’m using FreeBSD 9.2 and Nagios 3.5.1. A few weeks ago I wrote about freebsd-update reminding you to upgrade your affected systems. Since then, freebsd-update has continued to send me false positives about upgrading. Suggestions have been made that I track down Colin Percival at BSDCan 2014, which starts in few days. However, I know at least four people have already arrived, two days before any official event, the first of which is

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zfs receive stalled, filesystem 95% full

It seems that when I decided to send a filesystem from one server to another, I neglected to establish sufficient space existed. This morning, before I headed to BSDCan, I found that my server was very sluggish and slow to respond. Nagios was flagging all kinds of errors, some of which I’d never seen before. Looking at the system in question, I found the system 95% full: $ zpool list NAME SIZE ALLOC

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zfs send on FreeBSD over ssh using mbuffer

I have two ZFS servers which have several TB of space. One of the great ZFS features is the ability to send one filesystem to another filesystem, on the current or another server. I will do this over ssh. One of my servers has a lot of spare space, so I figure I will duplicate my backups there. The source This server contains a Bacula Storage Daemon with access to about 27TB, with

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