Olaf Faaland 3c9e0d673e Dump unique configurations and Uberblocks in zdb -lu ... For zdb -l, detect when the configuration nvlist in some label l (l>0) is the same as a configuration already dumped. If so, do not dump it. Make a similar check when dumping Uberblocks for zdb -lu. Check whether a label already dumped contains an identical Uberblock. If so, do not dump the Uberblock. When dumping a configuration or Uberblock, state which labels it is found in (0-3), for example: labels = 1 2 3 Detecting redundant uberblocks or configurations is accomplished by calculating checksums of the uberblocks and the packed nvlists containing the configuration. If there is nothing unique to be dumped for a label (ie the configuration and uberblocks have checksums matching those already dumped) print nothing for that label. With additional l's or u's, increase verbosity as follows: -l Dump each unique configuration only once. Indicate which labels it appears in. -ll In addition, dump label space usage stats. -lll Dump every configuration, unique or not. -u Dump each unique, valid, uberblock only once. Indicate which labels it appears in. -uu In addition, state which slots are invalid. -uuu Dump every uberblock, unique or not. -uuuu Dump the uberblock blockpointer (used to be -uuu) Make exit values conform to the manual page. Failing to unpack a configuration nvlist is considered an error, as well as failing to open or read from the device. Add three tests, zdb_00{3,4,5}_pos to verify the above functionality. An example of the output: ------------------------------------ LABEL 0 ------------------------------------ version: 5000 name: 'pool' state: 1 txg: 880 < ... redacted ... > features_for_read: com.delphix:hole_birth com.delphix:embedded_data labels = 0 Uberblock[0] magic = 0000000000bab10c version = 5000 txg = 0 guid_sum = 3038694082047428541 timestamp = 1487715500 UTC = Tue Feb 21 14:18:20 2017 labels = 0 1 2 3 Uberblock[4] magic = 0000000000bab10c version = 5000 txg = 772 guid_sum = 9045970794941528051 timestamp = 1487727291 UTC = Tue Feb 21 17:34:51 2017 labels = 0 < ... redacted ... > ------------------------------------ LABEL 1 ------------------------------------ version: 5000 name: 'pool' state: 1 txg: 14 < ... redacted ... > com.delphix:embedded_data labels = 1 2 3 Uberblock[4] magic = 0000000000bab10c version = 5000 txg = 4 guid_sum = 7793930272573252584 timestamp = 1487727521 UTC = Tue Feb 21 17:38:41 2017 labels = 1 2 3 < ... redacted ... > Reviewed-by: Tim Chase <tim@chase2k.com> Reviewed-by: Don Brady <don.brady@intel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Olaf Faaland <faaland1@llnl.gov> Closes #5738		2017-03-06 16:01:45 -08:00
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linux.run	Dump unique configurations and Uberblocks in zdb -lu	2017-03-06 16:01:45 -08:00
Makefile.am	Add the ZFS Test Suite	2016-03-16 13:46:16 -07:00
perf-regression.run	OpenZFS - Performance regression suite for zfstest	2016-09-08 16:18:28 -07:00