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   Linux FAQ > 10. Frequently Encountered Error Messages
Question:  10.9. Warning--bdflush Not Running.

Modern kernels use a better strategy for writing cached disk blocks. In addition to the kernel changes, this involves replacing the old update program which used to write everything every 30 seconds with a more subtle daemon (actually a pair), known as bdflush. Get bdflush-n.n.tar.gz from the same place as the kernel source code ("How To Upgrade/Recompile a Kernel.") and compile and install it. bdflush should be started before the usual boot-time file system checks. It will work fine with older kernels as well, so there's no need to keep the old update around.

This FAQ is from Linux Frequently Asked Questions with Answers, maintained by Robert Kiesling

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