Author: Trond Endrestøl
An exercise on ZFS clones
This is an exercise I made, just to remind myself of how snapshots and clones work in ZFS. Also, how to properly get rid of them when you’re short of diskspace, or the dataset listing is too long, etc. First, we have the shell script that demonstrates the rise and fall of the initial dataset, […]
Read More → An exercise on ZFS clonesUnofficial errata: FreeBSD Mastery: ZFS
I bought the ebook edition of FreeBSD Mastery: ZFS this June. While the authors’ intentions are good, the 2015-05-21 edition has some errors and mistakes. The table below is nothing more than an unofficial errata of said book. Beware, what you find below might be due to my lack of understanding FreeBSD, ZFS, or the […]
Read More → Unofficial errata: FreeBSD Mastery: ZFSUpgrading XenServer 6.2
Download the required updates. Extract the XS*.xsupdate files. Transfer the XS*.xsupdate files to, say, /tmp/xsup on the master. Login on the XenServer console. Delete old log files in /var/log, e.g. /bin/rm /var/log/*.gz. Create if necessary, and change directory to /tmp/xsup. Run: Run: Delete the XS*.xsupdate files from /tmp/xsup. Shutdown the running VMs and restart each […]
Read More → Upgrading XenServer 6.2Autorativ vs autoritativ
Jeg har lagt merke til at flere bruker ordet «autorativ» der jeg vil bruke ordet «autoritativ». Jeg har lest flere steder om «autorativ DNS-tjener» og lignende, men jeg ville ha skrevet dette som «autoritativ DNS-tjener».
Read More → Autorativ vs autoritativLoose camera connector in Dell Latitude E5540
A colleague came into my office claiming the camera in his Dell Latitude E5540 didn’t work. Here’s a link to the Dell Latitude E5540 Owner’s Manual. After a bit of troubleshooting, I removed the display bezel. Lo and behold, the camera connector was halfway out of its socket. Once I pressed the connector into place, […]
Read More → Loose camera connector in Dell Latitude E5540Microsoft’s support on the fringe lately?
Have you tried reading a Microsoft Knowledgebase article lately? It appears that every link like http://support.microsoft.com/kb/3023215 results in nothing.
Read More → Microsoft’s support on the fringe lately?Adding 24 hour clock to FreeBSD’s hardstatus string for GNU Screen
FreeBSD gives the user an option of installing the file /usr/local/etc/screenrc with some sensible defaults along with GNU Screen, aka sysutils/screen. Among the defaults are a format string for the hardstatus line. It shows the date using yy/dd/mm notation and the time as a 12 hour clock. That may be fine in the English speaking […]
Read More → Adding 24 hour clock to FreeBSD’s hardstatus string for GNU ScreenUpgrading PostgreSQL 9.2.10 to 9.4.1
I decided to upgrade my PostgreSQL server today. I did this upgrade slightly different than the last time. All commands were done as the root user unless indicated.
Read More → Upgrading PostgreSQL 9.2.10 to 9.4.1Strange spam
Apart from what I withheld by choice, the above is all that appears in this spam. Notice the strange Message-ID on line 8. Spam programming gone wrong? Maybe they should have used Erlang.
Read More → Strange spamAscertaining installed ports for a specific architecture
When upgrading from one major version of FreeBSD to another, in my case from FreeBSD/amd64 stable/9 to FreeBSD/amd64 stable/10, it’s customary to upgrade the installed ports afterwards, beginning with ports-mgmt/pkg. I forcefully upgraded all installed ports using portupgrade -afpv, but the upgrade of lang/ruby21 failed miserably. I removed all traces of Ruby 2.1, i.e. ports-mgmt/portupgrade […]
Read More → Ascertaining installed ports for a specific architecture