Testing Grub2

Gentoo is a distribution where you decide about software you install. This was reason enough for me to give Grub2 a spin. Installation wasn’t that hard after unmasking and keywording the grub package: echo “sys-boot/grub:2 **” >> /etc/portage/package.keywords echo “sys-boot/grub:2” >> /etc/portage/package.unmask emerge -av sys-boot/grub:2

Check XFS fragmentation

Using XFS means, that you have to deal with fragmentation of your files. Disregarding fragmentation, XFS is a wonderful filesystem which never caused any problems here. To check fragmentation, we use the xfs-debug tool in read-only mode: xfs_db -c frag -r /dev/sdX# At my server it would look like that: stargazer ~ # xfs_db -c frag -r /dev/sda7 […]

Bad RAM

I guess there are many ways to drive a sysadmin crazy – I even experienced a few by now; But the most effective one of all seems to be bad memory. Let me tell you: Nowadays most systems that I get to look at are Windows boxes which are acting weird in a not really reproducible way.

Today’s hint

Today I was trying to free some space on my server and came across my kernel sources which were a space hog here – especially if they’re already compiled: denkbrett src # du -sh linux-2.6.39.3 718M linux-2.6.39.3 denkbrett src # cd linux-2.6.39.3 denkbrett linux-2.6.39.3 # make distclean denkbrett src # du -sh 437M . As you see, a […]

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