Bug #13662
Updated by Loïc Dachary over 8 years ago
h3. problem description Machines hosting OSDs with Debian jessie and running linux 3.16 crashed one after the other with the attached backtrace (photo of the console). They are all related to ext4 xattr but no trace is the same. Running hammer 0.94.5. It looks like something related to xattr propagated to all OSD and triggered an ext4 kernel bug that has the machine crash. h3. workaround Rebuilt the ubuntu trusty 3.19 kernel with the following patch: https://bugzilla.kernel.org/show_bug.cgi?id=107301#c6 The patch simply removes the mbcache code from ext4 xattr handing.