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200 commits

Author SHA1 Message Date
Scott Lystig Fritchie
fdf78bdbbc Tweak IsRelevantToMe_p in B10 (more)
Last night we hit a rare case of failed convergence.

f was out of sync with the rest of the world.
f: upi=[b,g,f] repairing=[a,c]
The "rest of the world" used a larger chain at:
*: upi=[c,b,g,a], repairing=[f]

And f refused to join the larger chain because of the way that
IsRelevantToMe_p was being calculated before this commit.

Hrrrm, though, I'm not convinced that this particular problem
is fixed 100% by this patch.  What if the chain lengths were
the same but also UPI incompatible?  e.g. if I remove 'a' from
the "real world (in the partition simulator)" example above:

f: upi=[b,g,f] repairing=[c]
*: upi=[c,b,g], repairing=[f]

Hrmmmmm, I may need to reintroduce the my-recent-adopted-projection-
flapping-like-counter thingie to try to break this kind of
incompatible deadlock.
2015-09-14 13:40:34 +09:00
Scott Lystig Fritchie
4fba6c0d33 Adjust converge test conditions slightly 2015-09-13 21:07:54 +09:00
Scott Lystig Fritchie
04369673b0 MaxFiles static file deletion isn't good for make_zerf(). Add some no-partition scenarios 2015-09-13 16:59:08 +09:00
Scott Lystig Fritchie
f3a0ee91cf WIP: thread P_calc_current all the way to C100 for CP mode assist 2015-09-13 15:58:45 +09:00
Scott Lystig Fritchie
5efec1b6cd Add upi_unanimous annotation to AP mode 2015-09-11 21:47:05 +09:00
Scott Lystig Fritchie
68f1ff68ee Bugfix: broken eunit test 2015-09-11 17:52:40 +09:00
Scott Lystig Fritchie
a0c129c16d Bugfix: wow, a chain state transition sanity check bug 2015-09-11 17:32:52 +09:00
Scott Lystig Fritchie
8df7d58365 Add partition simulator support to fitness service 2015-09-11 16:45:29 +09:00
Scott Lystig Fritchie
41737ae62a Add delete_admin_down API implementation, oops! 2015-09-10 18:05:18 +09:00
Scott Lystig Fritchie
d45c249e89 Add admin down status API to fitness server 2015-09-10 17:30:11 +09:00
Scott Lystig Fritchie
c14b9ce50f Minor cleanup, add more partitions to converge demo 2015-09-10 16:39:15 +09:00
Scott Lystig Fritchie
b7aa33c617 Yeah, nearly there. AP fails occasionally in multiple-asymmetric-partition sequence 2015-09-09 23:10:39 +09:00
Scott Lystig Fritchie
7af863d840 Add stubs of machi_fitness server 2015-09-08 16:13:07 +09:00
Scott Lystig Fritchie
185c9eb313 WIP: add failing eunit placeholder for spam 2015-09-07 15:38:23 +09:00
Scott Lystig Fritchie
4376ce9ec1 Remove all flap counting and inner projection stuff 2015-09-04 17:17:49 +09:00
Scott Lystig Fritchie
2e2f5f44c4 Another tweak to private_projections_are_stable() 2015-09-01 00:51:12 +09:00
Scott Lystig Fritchie
823b47bef3 Bugfix: convergence property for CP mode, again 2015-08-30 19:52:31 +09:00
Scott Lystig Fritchie
764708f3ef Fix private_projections_are_stable() for long CP mode chains 2015-08-30 00:03:51 +09:00
Scott Lystig Fritchie
94394d3429 Bugfix: allow none proj to re-emerge from flapping (more)
See comments added in this commit at A40.

So far, I've been doing CP mode testing with a handful of (very useful)
network partition combinations using:

    machi_chain_manager1_converge_demo:t(3, [{private_write_verbose,true}, {consistency_mode, cp_mode}, {witnesses, [a]}]).

Next steps:

* Expand number & types of partitions
* Expand to chain lengths of 5 and beyond
2015-08-29 21:36:53 +09:00
Scott Lystig Fritchie
ee19a0856b WIP: justincase 2015-08-29 19:59:46 +09:00
Scott Lystig Fritchie
dc5ae4047a Bugfix: react_to_env_A30 inner->norm fix, make_zerf() none proj derp fix 2015-08-29 18:01:13 +09:00
Scott Lystig Fritchie
85eb3567a3 Bugfix: convergence property for CP mode 2015-08-29 15:57:23 +09:00
Scott Lystig Fritchie
403cb5b7a6 WIP: improvements, but now flapping inner epoch keeps increasing {sigh} 2015-08-28 21:13:54 +09:00
Scott Lystig Fritchie
3dfe5c2677 WIP: fix annotation history on disk 2015-08-28 18:37:11 +09:00
Scott Lystig Fritchie
12b74a52fd WIP: pre-dinner paranoid checkin 2015-08-27 18:45:27 +09:00
Scott Lystig Fritchie
28335a1310 Add CP mode unwedge. All eunit tests are passing again. 2015-08-26 18:47:39 +09:00
Scott Lystig Fritchie
e8f3ab381d Add set_consistency_mode() to projection store API, use it 2015-08-26 14:57:51 +09:00
Scott Lystig Fritchie
833463f20d Merge branch 'master' into slf/chain-manager/cp-mode4 2015-08-26 14:39:42 +09:00
Scott Lystig Fritchie
27656eafaa Fix (via sleep, egadz) race condition in machi_flu_psup_test 2015-08-26 14:38:56 +09:00
Scott Lystig Fritchie
c12231c7b6 Fix other tests to accomodate new semantics 2015-08-25 19:45:31 +09:00
Scott Lystig Fritchie
c0ee323637 Our new unit test works, yay 2015-08-25 19:42:33 +09:00
Scott Lystig Fritchie
83f49472db WIP: intermediate refactoring 2015-08-25 19:31:05 +09:00
Scott Lystig Fritchie
0a4c0f963e Add failing test case for annotating private projections via dbg2 list 2015-08-25 19:12:23 +09:00
Scott Lystig Fritchie
1c5a17b708 WIP: adjust throttle of flapping 'shut up' 2015-08-25 17:01:14 +09:00
Scott Lystig Fritchie
9a86453753 WIP: half-baked idea, stopping for the night (more)
So, I'm 50% sure this is a good idea for CP mode: if there's
a later public projection than P_current, then who knows what
we might have missed.  So, call make_zerf() to find out the
absolute latest.  Problem: flapping state appears to be lost,
booo.
2015-08-24 21:54:30 +09:00
Scott Lystig Fritchie
2f82fe0487 WIP: cp_mode improvements 2015-08-24 19:04:26 +09:00
Scott Lystig Fritchie
f6e81e6cd0 Add damper check for flapping of *inner* projections, whee! 2015-08-23 20:01:44 +09:00
Scott Lystig Fritchie
2b2facaba2 Add more FLU choices to converge demo 2015-08-22 14:56:26 +09:00
Scott Lystig Fritchie
14fad2d704 End-to-end chain state checking is still broken (more)
If we use verbose output from:

    machi_chain_manager1_converge_demo:t(3, [{private_write_verbose,true}, {consistency_mode, cp_mode}, {witnesses, [a]}]).

And use:

    tail -f typescript_file | egrep --line-buffered 'SET|attempted|CONFIRM'

... then we can clearly see a chain safety violation when moving from
epoch 81 -> 83.  I need to add more smarts to the safety checking,
both at the individual transition sanity check and at the converge_demo
overall rolling sanity check.

Key to output: CONFIRM by epoch {num} {csum} at {UPI} {Repairing}

    SET # of FLUs = 3 members [a,b,c]).
    CONFIRM by epoch 1 <<96,161,96,...>> at [a,b] [c]
    CONFIRM by epoch 5 <<134,243,175,...>> at [b,c] []
    CONFIRM by epoch 7 <<207,93,225,...>> at [b,c] []
    CONFIRM by epoch 47 <<60,142,248,...>> at [b,c] []
    SET partitions = [{c,b},{c,a}] (1 of 2) at {22,3,34}
    CONFIRM by epoch 81 <<223,58,184,...>> at [a,b] []
    SET partitions = [{b,c},{b,a}] (2 of 2) at {22,3,38}
    CONFIRM by epoch 83 <<33,208,224,...>> at [a,c] []
    SET partitions = []
    CONFIRM by epoch 85 <<173,179,149,...>> at [a,c] [b]
2015-08-13 22:16:28 +09:00
Scott Lystig Fritchie
e956c0b534 Fix (yet again) converge demo stable criteria 2015-08-13 21:26:07 +09:00
Scott Lystig Fritchie
eecf5479ed Tweak stability criteria for converge demo 2015-08-13 16:18:33 +09:00
Scott Lystig Fritchie
30a5652299 WIP: refining stable success for machi_chain_manager1_converge_demo, even better 2015-08-07 15:06:23 +09:00
Scott Lystig Fritchie
c8ddce103e WIP: refining stable success for machi_chain_manager1_converge_demo 2015-08-07 12:28:51 +09:00
Scott Lystig Fritchie
3ca0f4491d WIP: always start chain manager with none projection 2015-08-06 19:24:14 +09:00
Scott Lystig Fritchie
0d7f6c8d7e WIP: chain transitions are now fully (?) aware of witness servers 2015-08-06 17:48:31 +09:00
Scott Lystig Fritchie
e9c4e2f98d WIP: rearrange CP mode projection calc 2015-08-06 15:22:04 +09:00
Scott Lystig Fritchie
dcf532bafd WIP: Witness test expansion 2015-08-05 18:23:44 +09:00
Scott Lystig Fritchie
e3d9ba2b83 WIP: Witness test expansion 2015-08-05 17:17:25 +09:00
Scott Lystig Fritchie
6e521700bd WIP: Adding witness_smoke_test_ but it's broken (more)
So, the problem is that the chain manager isn't finishing repair
because UPI=[a], and a is a witness, and a can't do the list files etc etc
repair stuff that repairer FLUs need to do.

The best (?) way forward is to add some advance smarts to the
chain manager so that it doesn't propose a UPI of 100% witnesses?
2015-07-21 19:05:04 +09:00
Scott Lystig Fritchie
432190435e Add witness_mode to FLU 2015-07-21 17:29:33 +09:00