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Finding Corrupt Files that cause a Kernel Error

There is a BTRFS bug in kernel 3.13 which is triggered by Kmail and causes Kmail index files to become seriously corrupt. Another bug in BTRFS causes a kernel GPF when an application tries to read such a file, that results in a SEGV being sent to the application. After that the kernel ceases to [...]

BTRFS Status March 2014

I’m currently using BTRFS on most systems that I can access easily. It’s not nearly reliable enough that I want to install it on a server in another country or an embedded device that’s only accessible via 3G, but for systems where I can access the console it’s not doing too badly.

Balancing and Space [...]

Cheap Bulk Storage

The Problem

Some of my clients need systems that store reasonable amounts of data. This is enough data that we can expect some data corruption on disk such that traditional RAID doesn’t work, that old fashioned filesystems like Ext3/4 will have unreasonable fsck fimes, and that the number of disks in a small server isn’t [...]