[DRBD-announce] drbd-8.4.8-0rc1.tar.gz

Lars Ellenberg lars.ellenberg at linbit.com
Mon Jul 11 18:16:49 CEST 2016

This is a release candidate. Please help testing,
and let us know of any problems or regressions, performance or otherwise.



Changes since 8.4.7:

 * compat fixes for linux kernels up to 4.7
 * fix potential deadlock with many parallel request on kernels >= 4.3
 * fix potential data divergence after write error on secondary
   with non-synchronous replication
 * performance improvement for kernel >= 2.6.39
   use request plugging again to help backends with merging batches

Already in 8.4.7-2:

 * compat: don't trigger BUG_ON on flush in kernel < 2.6.24 (e.g. RHEL 5)
 * al_write_transaction: skip re-scanning of bitmap page pointer array.
   Improves performance of random writes on "huge" volumes
   by burning less CPU and avoiding CPU cache pressure.

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