Storage Replication in High-Performance High-Availability Environments

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An introduction to integrating Flashcache with DRBD and Pacemaker.

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Storage Replication in High-Performance High-Availability Environments

  1. 1. Storage Replication in High-PerformanceHigh-Availability Environments Florian Haas hastexo
  2. 2. flashcacheA general-purpose write-back block cache for Linux
  3. 3. "Facebook" and the Facebook logo are registered trademarks of Facebook, Inc.
  4. 4. +
  5. 5. dm+
  6. 6. App DRBD dm dm + +"DRBD" and the DRBD logo are registered trademarks of LINBIT Information Technologies GmbH.
  7. 7. App dmDRBD DRBD +
  8. 8. So, how does this help us?
  9. 9. https://github.com/fghaas/ flashcache/tree/ocf-ra
  10. 10. primitive p_drbd ocf:linbit:drbd params drbd_resource="flashcache" op monitor role="Master" interval="10" op monitor role="Slave" interval="20"clone cl_drbd p_drbd meta notify=trueprimitive p_flashcache_drbd ocf:flashcache:flashcache params name="fcdrbd" device="/dev/drbd0" cache_device="/dev/drbd1"primitive p_fs_flashcache ocf:heartbeat:filesystem params device="/dev/mapper/fcdrbd" directory="/srv/whatever" fstype="xfs"
  11. 11. So, everything is wonderful? Well, not quite.
  12. 12. Out-of-tree kernel code
  13. 13. Flashcache packaging
  14. 14. OCF resource agent
  15. 15. Further Information http://www.hastexo.comhttp://twitter.com/hastexo
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