Steven Hartland ca6505b818 Prevent ZFS leaking pool free space ... When processing async destroys ZFS would leak space every txg timeout (5 seconds by default), if no writes occurred, until the pool is totally full. At this point it would be unfixable without a pool recreation. In addition if the machine was rebooted with the pool in this situation would fail to import on boot, hanging indefinitely, as the import process requires the ability to write data to the pool. Any attempts to query the pool status during the hung import would not return as the import holds the pool lock. The only way to import such a pool would be to specify -o readonly=on to the zpool import. zdb -bb <pool> can be used to check for "deferred free" size which is where this lost space will be counted. MFC after: 3 days Sponsored by: Multiplay		2014-10-16 02:23:27 +00:00
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boot/zfs	Diff reduction with kernel code: instruct the compiler that the data of	2014-10-02 00:13:08 +00:00
compat/opensolaris	make userland __assfail from opensolaris compat honor 'aok' variable	2014-10-07 14:15:50 +00:00
contrib/opensolaris	Prevent ZFS leaking pool free space	2014-10-16 02:23:27 +00:00
dev	Fix the stack tracing for dtrace/powerpc.	2014-09-17 02:43:47 +00:00