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| author | Igor Lvovsky <[email protected]> | 2014-01-16 11:41:27 +0200 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-01-23 13:31:51 -0800 |
| commit | 478d64fdaeb89c8f029f3dd1969447317eedaa6e (patch) | |
| tree | 8ab0284645a34b1d1b14d5ae544e290c2b6355fd /README.markdown | |
| parent | 93292b308178cb885e1b11ca1a270c36f5b08a23 (diff) | |
Add additional state TXG_STATE_WAIT_FOR_SYNC for txg.
In several cases when digging into kstats we can found two txgs
in SYNC state, e.g.
txg birth state nreserved nread nwritten ...
985452 258127184872561 C 0 373948416 2376272384 ...
985453 258129016180616 C 0 378173440 28793344 ...
985454 258129016271523 S 0 0 0 ...
985455 258130864245986 S 0 0 0 ...
985456 258130867458851 O 0 0 0 ...
However only first txg (985454) is really syncing at this moment.
The other one (985455) marked as SYNCED is actually in a post-QUIESCED
state and waiting to start sync. So, the new TXG_STATE_WAIT_FOR_SYNC
state between TXG_STATE_QUIESCED and TXG_STATE_SYNCED was added to
reveal this situation.
txg birth state nreserved nread nwritten ...
1086896 235261068743969 C 0 163577856 8437248 ...
1086897 235262870830801 C 0 280625152 822594048 ...
1086898 235264172219064 S 0 0 0 ...
1086899 235264936134407 W 0 0 0 ...
1086900 235264936296156 O 0 0 0 ...
Signed-off-by: Igor Lvovsky <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #2075
Diffstat (limited to 'README.markdown')
0 files changed, 0 insertions, 0 deletions