Matt Macy 90df93417e ZFS/MFV: Use cached feature info in spa_add_feature_stats() ... commit 417104bdd3 Author: Ned Bass <bass6@llnl.gov> Date: Thu Feb 26 12:24:11 2015 -0800 Use cached feature info in spa_add_feature_stats() Avoid issuing I/O to the pool when retrieving feature flags information. Trying to read the ZAPs from disk means that zpool clear would hang if the pool is suspended and recovery would require a reboot. To keep the feature stats resident in memory, we hang a cached nvlist off of the spa. It is built up from disk the first time spa_add_feature_stats() is called, and refreshed thereafter using the cached feature reference counts. spa_add_feature_stats() gets called at pool import time so we can be sure the cached nvlist will be available if the pool is later suspended. Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3082		2018-08-10 23:42:11 +00:00
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boot/zfs	Mark two things as unused (since they are only sometimes used) and	2017-12-03 04:55:33 +00:00
compat/opensolaris	opensolaris compat: fix compile error	2018-07-03 23:45:02 +00:00
contrib/opensolaris	ZFS/MFV: Use cached feature info in spa_add_feature_stats()	2018-08-10 23:42:11 +00:00
dev	dtrace/powerpc: Correct register indices for non-indexed registers in the trapframe	2018-07-16 19:47:29 +00:00