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0582e40322
Add a callback to wake all running mmp threads when zfs_multihost_interval is changed. This is necessary when the interval is changed from a very large value to a significantly lower one, while pools are imported that have the multihost property enabled. Without this commit, the mmp thread does not wake up and detect the new interval until after it has waited the old multihost interval time. A user monitoring mmp writes via the provided kstat would be led to believe that the changed setting did not work. Added a test in the ZTS under mmp to verify the new functionality is working. Added a test to ztest which starts and stops mmp threads, and calls into the code to signal sleeping mmp threads, to test for deadlocks or similar locking issues. Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Olaf Faaland <faaland1@llnl.gov> Closes #6387 |
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| zcommon | ||
| zfs | ||
| zpios | ||
| .gitignore | ||
| Makefile.in | ||