Author: adrian.chadd
Date: Sun Jul 5 03:56:09 2009
New Revision: 14120
Modified:
wiki/ProjectStoreRebuildChanges.wiki
Log:
Edited wiki page through web user interface.
Modified: wiki/ProjectStoreRebuildChanges.wiki
==============================================================================
--- wiki/ProjectStoreRebuildChanges.wiki (original)
+++ wiki/ProjectStoreRebuildChanges.wiki Sun Jul 5 03:56:09 2009
@@ -16,6 +16,7 @@
In the AUFS case, parallelising the rebuilds and using async IO for
reading large swaplogs will make the restart process take seconds or
minutes instead of potentially hours/days on a large cache. Rebuilding from
disk will occur completely transparently in the background without
affecting the main process - lusca can then start immediately
returning "HITs" where possible.
+In the COSS case, keeping a cyclic-type swaplog will make it much, much
easier to do a rebuild. Instead of reading the entire disk looking for
objects, the swaplog can be used to rebuild the index. Future work should
investigate an alternative COSS disk layout which doesn't require reading
the entire disk to recover objects.
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