Posts

Benchmarking DRBD

We often see people on #drbd or on drbd-user trying to measure the performance of their setup. Here are a few best practices to do this.  Read more

“umount is too slow”

A question we see over and over again is

Why is umount so slow? Why does it take so long?

Part of the answer was already given in an earlier blog post; here’s some more explanation. Read more

DRBD causes too much CPU-load

The TL;DR version: don’t use data-integrity-alg in a production setup. Read more

“al-extents” explained

There is quite a bit of confusion about the DRBD configuration value al-extents (activity log extents), so here’s another shot at explaining it. Read more