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persist: manage "hypervisor.json" with new store #1889

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merged 4 commits into from
Jul 23, 2019
Merged

persist: manage "hypervisor.json" with new store #1889

merged 4 commits into from
Jul 23, 2019

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WeiZhang555
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@WeiZhang555 WeiZhang555 commented Jul 18, 2019 •
edited

Fixes #803

This PR moved 3 files to new store, now new store can manage more parts:

  • hypervisor.json
  • agent.json
  • network.json

Signed-off-by: Wei Zhang weizhang555.zw@gmail.com

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/test

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codecov bot commented Jul 18, 2019 •
edited

Codecov Report

❗ No coverage uploaded for pull request base (master@d987a30). Click here to learn what that means.
The diff coverage is 43.08%.

@@            Coverage Diff            @@
##             master    #1889   +/-   ##
=========================================
  Coverage          ?   52.32%           
=========================================
  Files             ?      108           
  Lines             ?    14102           
  Branches          ?        0           
=========================================
  Hits              ?     7379           
  Misses            ?     5848           
  Partials          ?      875

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/test

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codecov bot commented Jul 19, 2019 •
edited

Codecov Report

❗ No coverage uploaded for pull request base (master@688732a). Click here to learn what that means.
The diff coverage is 29.84%.

@@            Coverage Diff            @@
##             master    #1889   +/-   ##
=========================================
  Coverage          ?   52.19%           
=========================================
  Files             ?      108           
  Lines             ?    14192           
  Branches          ?        0           
=========================================
  Hits              ?     7408           
  Misses            ?     5905           
  Partials          ?      879

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/test

bergwolf
bergwolf reviewed Jul 20, 2019
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virtcontainers/qemu.go
}

func (q *qemu) load(s persistapi.HypervisorState) {
q.state.UUID = s.UUID
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qemu pid is not restored. Then why do we need to persist it?

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fc and ACRN use it.

virtcontainers/sandbox.go
@@ -574,8 +572,20 @@ func newSandbox(ctx context.Context, sandboxConfig SandboxConfig, factory Factor
}
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nit: the defer function should be combined with the above one.

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Yep, nice catch!

virtcontainers/sandbox.go
s.devManager = deviceManager.NewDeviceManager(sandboxConfig.HypervisorConfig.BlockDeviceDriver, nil)

// Ignore the error. Restore can fail for a new sandbox
s.Restore()
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Why is it safe to ignore errors here? The old store relies on restore to determine if it should really create new guest. What is the workflow of newstore here?

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They're almost same. s.Restore() always fail when it's first sandbox.

https://github.com/kata-containers/runtime/pull/1889/files#diff-bca2c2b5b04e0e74533b492fd23a3cc8R478

this part will check if s.state.State=="", if state is empty, then we need to create a new sandbox; else this is an existing sandbox.

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How about capturing the error and adding it to a logger.WithError(err).Debug("found expected restore error")?

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@jodh-intel
Actually I think it can be expected or unexpected, we can't know so we can't print debug message saying "it's expected"

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Ack ;)

@WeiZhang555 WeiZhang555 force-pushed the persist-data branch 2 times, most recently from e747833 to 3dad0b1 Compare July 22, 2019 04:02
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ping @kata-containers/runtime @bergwolf @sboeuf @egernst

Please help review it, before I make the PR too huge...

jodh-intel
jodh-intel reviewed Jul 22, 2019
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Thanks @WeiZhang555.

This is a large PR so if you can add some more unit tests to assert the expected behaviour, that would be great.

virtcontainers/bridgedmacvlan_endpoint.go Outdated
ID: endpoint.NetPair.TapInterface.ID,
Name: endpoint.NetPair.TapInterface.Name,
TAPIface: persistapi.NetworkInterface{
Name: endpoint.NetPair.TapInterface.TAPIface.Name,
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It would be clearer if you create a variable to refer to endpoint.NetPair (and maybe others for referring to endpoint.NetPair.TapInterface and endpoint.NetPair.VirtIface) I think.

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The copy is deep so it's hard to be clear, I don't think separate some variables would help 😂

Fixing now.

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I've separated common parts to several functions, and added unit tests.
Please take another look. @jodh-intel

virtcontainers/bridgedmacvlan_endpoint.go Outdated

func (endpoint *BridgedMacvlanEndpoint) save() (s persistapi.NetworkEndpoint) {
s.Type = string(endpoint.Type())
s.BridgedMacvlan = &persistapi.BridgedMacvlanEndpoint{
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Nit: Would be clearer to add a blank line after s.Type = ....

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ok

virtcontainers/kata_agent.go Outdated
func (k *kataAgent) save() (s persistapi.AgentState) {
s.ProxyPid = k.state.ProxyPid
s.URL = k.state.URL
return
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This is of course correct, but would look more "conventional" as:

return persistapi.AgentState{
    ProxyPid: k.state.ProxyPid,
    URL: k.state.URL,
}

Same comment for load() below.

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Nice, let me do this.

virtcontainers/macvtap_endpoint.go Outdated

func (endpoint *MacvtapEndpoint) save() (s persistapi.NetworkEndpoint) {
s.Type = string(endpoint.Type())
s.Macvtap = &persistapi.MacvtapEndpoint{
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Again, maybe just:

return &persistapi.MacvtapEndpoint{
  // ...
}

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ok

virtcontainers/persist.go
case IPVlanEndpointType:
ep = &IPVlanEndpoint{}
default:
continue
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I wonder if it's worth adding atleast a warning log message here as this scenario shouldn't occur I think?

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Yep, it's good idea.

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Thanks. This should probably be a Warn() though since we can recover from it (by ignoring it ;)

virtcontainers/persist/api/hypervisor.go Outdated
@@ -0,0 +1,43 @@
// Copyright (c) 2016 Intel Corporation
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Incorrect copyright header?

virtcontainers/qemu.go
}
} else if q.state.UUID == "" { // new store
create = true
}
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This set of tets could do with a unit test if possible?

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Not sure how, let me take a shot.

virtcontainers/sandbox.go
s.devManager = deviceManager.NewDeviceManager(sandboxConfig.HypervisorConfig.BlockDeviceDriver, nil)

// Ignore the error. Restore can fail for a new sandbox
s.Restore()
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How about capturing the error and adding it to a logger.WithError(err).Debug("found expected restore error")?

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/test

@WeiZhang555 WeiZhang555 force-pushed the persist-data branch 3 times, most recently from 3d12efe to 4c972f5 Compare July 23, 2019 06:25
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@WeiZhang555
persist: manage "hypervisor.json" with new store
7d5e48f 
Fixes kata-containers#803

Merge "hypervisor.json" into "persist.json", so the new store can take
care of hypervisor data now.

Signed-off-by: Wei Zhang <weizhang555.zw@gmail.com>
@WeiZhang555
persist: merge "agent.json"
99cf3f8 
Manage "agent.json" with new store.

Signed-off-by: Wei Zhang <weizhang555.zw@gmail.com>
@WeiZhang555
persist: merge "network.json"
3bfbbd6 
Merge "network.json" into "persist.json" so that new store can manage
network part.

Signed-off-by: Wei Zhang <weizhang555.zw@gmail.com>
@WeiZhang555
persist: improve readability
f3d0978 
Address some comments for code readability, also add some unit tests.

Signed-off-by: Wei Zhang <weizhang555.zw@gmail.com>
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/test

bergwolf
bergwolf approved these changes Jul 23, 2019
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Thanks @WeiZhang555 ! Nice work!

jodh-intel
jodh-intel approved these changes Jul 23, 2019
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Thanks for adding the tests. It would be good to add that qemu one if possible but this...

lgtm

virtcontainers/persist.go
case IPVlanEndpointType:
ep = &IPVlanEndpoint{}
default:
continue
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Thanks. This should probably be a Warn() though since we can recover from it (by ignoring it ;)

virtcontainers/sandbox.go
s.devManager = deviceManager.NewDeviceManager(sandboxConfig.HypervisorConfig.BlockDeviceDriver, nil)

// Ignore the error. Restore can fail for a new sandbox
s.Restore()
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Ack ;)

@egernst egernst merged commit 6ce5f30 into kata-containers:master Jul 23, 2019
@WeiZhang555 WeiZhang555 deleted the persist-data branch July 23, 2019 15:30
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Thanks! @egernst @jodh-intel @bergwolf

@jodh-intel jodh-intel mentioned this pull request Jun 5, 2020
Closed
egernst pushed a commit to egernst/runtime that referenced this pull request Feb 9, 2021
@bergwolf
vendor: update grpc-go dependency
cd03e0c 
This updates grpc-go vendor package to v1.11.3 release, to fix server.Stop()
handling so that server.Serve() does not wait blindly.

Full commit list:
d11072e (tag: v1.11.3) Change version to 1.11.3
d06e756 clientconn: add support for unix network in DialContext. (kata-containers#1883)
452c2a7 Change version to 1.11.3-dev
d89cded (tag: v1.11.2) Change version to 1.11.2
98ac976 server: add grpc.Method function for extracting method from context (kata-containers#1961)
0f5fa28 Change version to 1.11.2-dev
1e2570b (tag: v1.11.1) Change version to 1.11.1
d28faca client: Fix race when using both client-side default CallOptions and per-call CallOptions (kata-containers#1948)
48b7669 Change version to 1.11.1-dev
afc05b9 (tag: v1.11.0) Change version to 1.11.0
f2620c3 resolver: keep full unparsed target string if scheme in parsed target is not registered (kata-containers#1943)
9d2250f status: rename Status to GRPCStatus to avoid name conflicts (kata-containers#1944)
2756956 status: Allow external packages to produce status-compatible errors (kata-containers#1927)
0ff1b76 routeguide: reimplement distance calculation
dfbefc6 service reflection can lookup enum, enum val, oneof, and field symbols (kata-containers#1910)
32d9ffa Documentation: Fix broken link in rpc-errors.md (kata-containers#1935)
d5126f9 Correct Go 1.6 support policy (kata-containers#1934)
5415d18 Add documentation and example of adding details to errors (kata-containers#1915)
57640c0 Allow storing alternate transport.ServerStream implementations in context (kata-containers#1904)
031ee13 Fix Test: Update the deadline since small deadlines are prone to flakes on Travis. (kata-containers#1932)
2249df6 gzip: Add ability to set compression level (kata-containers#1891)
8124abf credentials/alts: Remove the enable_untrusted_alts flag (kata-containers#1931)
b96718f metadata: Fix bug where AppendToOutgoingContext could modify another context's metadata (kata-containers#1930)
738eb6b fix minor typos and remove grpc.Codec related code in TestInterceptorCanAccessCallOptions (kata-containers#1929)
211a7b7 credentials/alts: Update ALTS "New" APIs (kata-containers#1921)
fa28bef client: export types implementing CallOptions for access by interceptors (kata-containers#1902)
ec9275b travis: add Go 1.10 and run vet there instead of 1.9 (kata-containers#1913)
13975c0 stream: split per-attempt data from clientStream (kata-containers#1900)
2c2d834 stats: add BeginTime to stats.End (kata-containers#1907)
3a9e1ba Reset ping strike counter right before sending out data. (kata-containers#1905)
90dca43 resolver: always fall back to default resolver when target does not follow URI scheme (kata-containers#1889)
9aba044 server: Convert all non-status errors to codes.Unknown (kata-containers#1881)
efcc755 credentials/alts: change ALTS protos to match the golden version (kata-containers#1908)
0843fd0 credentials/alts: fix infinite recursion bug [in custom error type] (kata-containers#1906)
207e276 Fix test race: Atomically access minConnecTimout in testing environment. (kata-containers#1897)
3ae2a61 interop: Add use_alts flag to client and server binaries (kata-containers#1896)
5190b06 ALTS: Simplify "New" APIs (kata-containers#1895)
7c5299d Fix flaky test: TestCloseConnectionWhenServerPrefaceNotReceived (kata-containers#1870)
f0a1202 examples: Replace context.Background with context.WithTimeout (kata-containers#1877)
a1de3b2 alts: Change ALTS proto package name (kata-containers#1886)
2e7e633 Add ALTS code (kata-containers#1865)
583a630 Expunge error codes that shouldn't be returned from library (kata-containers#1875)
2759199 Small spelling fixes (unknow -> unknown) (kata-containers#1868)
12da026 clientconn: fix a typo in GetMethodConfig documentation (kata-containers#1867)
dfa1834 Change version to 1.11.0-dev (kata-containers#1863)
46fd263 benchmarks: add flag to benchmain to use bufconn instead of network (kata-containers#1837)
3926816 addrConn: Report underlying connection error in RPC error (kata-containers#1855)
445b728 Fix data race in TestServerGoAwayPendingRPC (kata-containers#1862)
e014063 addrConn: keep retrying even on non-temporary errors (kata-containers#1856)
484b3eb transport: fix race causing flow control discrepancy when sending messages over server limit (kata-containers#1859)
6c48c7f interop test: Expect io.EOF from stream.Send() (kata-containers#1858)
08d6261 metadata: provide AppendToOutgoingContext interface (kata-containers#1794)
d50734d Add status.Convert convenience function (kata-containers#1848)
365770f streams: Stop cleaning up after orphaned streams (kata-containers#1854)
7646b53 transport: support stats.Handler in serverHandlerTransport (kata-containers#1840)
104054a Fix connection drain error message (kata-containers#1844)
d09ec43 Implement unary functionality using streams (kata-containers#1835)
37346e3 Revert "Add WithResolverUserOptions for custom resolver build options" (kata-containers#1839)
424e3e9 Stream: do not cancel ctx created with service config timeout (kata-containers#1838)
f9628db Fix lint error and typo (kata-containers#1843)
0bd008f stats: Fix bug causing trailers-only responses to be reported as headers (kata-containers#1817)
5769e02 transport: remove unnecessary rstReceived (kata-containers#1834)
0848a09 transport: remove redundant check of stream state in Write (kata-containers#1833)
c22018a client: send RST_STREAM on client-side errors to prevent server from blocking (kata-containers#1823)
82e9f61 Use keyed fields for struct initializers (kata-containers#1829)
5ba054b encoding: Introduce new method for registering and choosing codecs (kata-containers#1813)
4f7a2c7 compare atomic and mutex performance in case of contention. (kata-containers#1788)
b71aced transport: Fix a data race when headers are received while the stream is being closed (kata-containers#1814)
46bef23 Write should fail when the stream was done but context wasn't cancelled. (kata-containers#1792)
10598f3 Explain target format in DialContext's documentation (kata-containers#1785)
08b7bd3 gzip: add Name const to avoid typos in usage (kata-containers#1804)
8b02d69 remove .please-update (kata-containers#1800)
1cd2346 Documentation: update broken wire.html link in metadata package. (kata-containers#1791)
6913ad5 Document that all errors from RPCs are status errors (kata-containers#1782)
8a8ac82 update const order (kata-containers#1770)
e975017 Don't set reconnect parameters when the server has already responded. (kata-containers#1779)
7aea499 credentials: return Unavailable instead of Internal for per-RPC creds errors (kata-containers#1776)
c998149 Avoid copying headers/trailers in unary RPCs unless requested by CallOptions (kata-containers#1775)
8246210 Update version to 1.10.0-dev (kata-containers#1777)
17c6e90 compare atomic and mutex performance for incrementing/storing one variable (kata-containers#1757)
65c901e Fix flakey test. (kata-containers#1771)
7f2472b grpclb: Remove duplicate init() (kata-containers#1764)
09fc336 server: fix bug preventing Serve from exiting when Listener is closed (kata-containers#1765)
035eb47 Fix TestGracefulStop flakiness (kata-containers#1767)
2720857 server: fix race between GracefulStop and new incoming connections (kata-containers#1745)
0547980 Notify parent ClientConn to re-resolve in grpclb (kata-containers#1699)
e6549e6 Add dial option to set balancer (kata-containers#1697)
6610f9a Fix test: Data race while resetting global var. (kata-containers#1748)
f4b5237 status: add Code convenience function (kata-containers#1754)
47bddd7 vet: run golint on _string files (kata-containers#1749)
45088c2 examples: fix concurrent map accesses in route_guide server (kata-containers#1752)
4e393e0 grpc: fix deprecation comments to conform to standard (kata-containers#1691)
0b24825 Adjust keepalive paramenters in the test such that scheduling delays don't cause false failures too often. (kata-containers#1730)
f9390a7 fix typo (kata-containers#1746)
6ef45d3 fix stats flaky test (kata-containers#1740)
98b17f2 relocate check for shutdown in ac.tearDown() (kata-containers#1723)
5ff10c3 fix flaky TestPickfirstOneAddressRemoval (kata-containers#1731)
2625f03 bufconn: allow readers to receive data after writers close (kata-containers#1739)
b0e0950 After sending second goaway close conn if idle. (kata-containers#1736)
b8cf13e Make sure all goroutines have ended before restoring global vars. (kata-containers#1732)
4742c42 client: fix race between server response and stream context cancellation (kata-containers#1729)
8fba5fc In gracefull stop close server transport only after flushing status of the last stream. (kata-containers#1734)
d1fc8fa Deflake tests that rely on Stop() then Dial() not reconnecting (kata-containers#1728)
dba60db Switch balancer to grpclb when at least one address is grpclb address (kata-containers#1692)
ca1b23b Update CONTRIBUTING.md to CNCF CLA
2941ee1 codes: Add UnmarshalJSON support to Code type (kata-containers#1720)
ec61302 naming: Fix build constraints for go1.6 and go1.7 (kata-containers#1718)
b8191e5 remove stringer and go generate (kata-containers#1715)
ff1be3f Add WithResolverUserOptions for custom resolver build options (kata-containers#1711)
580defa Fix grpc basics link in route_guide example (kata-containers#1713)
b7dc71e Optimize codes.String() method using a switch instead of a slice of indexes (kata-containers#1712)
1fc873d Disable ccBalancerWrapper when it is closed (kata-containers#1698)
bf35f1b Refactor roundrobin to support custom picker (kata-containers#1707)
4308342 Change parseTimeout to not handle non-second durations (kata-containers#1706)
be07790 make load balancing policy name string case-insensitive (kata-containers#1708)
cd563b8 protoCodec: avoid buffer allocations if proto.Marshaler/Unmarshaler (kata-containers#1689)
61c6740 Add comments to ClientConn/SubConn interfaces to indicate new methods may be added (kata-containers#1680)
ddbb27e client: backoff before reconnecting if an HTTP2 server preface was not received (kata-containers#1648)
a4bf341 use the request context with net/http handler (kata-containers#1696)
c6b4608 transport: fix race sending RPC status that could lead to a panic (kata-containers#1687)
00383af Fix misleading default resolver scheme comments (kata-containers#1703)
a62701e Eliminate data race in ccBalancerWrapper (kata-containers#1688)
1e1a47f Re-resolve target when one connection becomes TransientFailure (kata-containers#1679)
2ef021f New grpclb implementation (kata-containers#1558)
10873b3 Fix panics on balancer and resolver updates (kata-containers#1684)
646f701 Change version to 1.9.0-dev (kata-containers#1682)

Fixes: kata-containers#307

Signed-off-by: Peng Tao <bergwolf@gmail.com>
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[RFC] baseline persist data for live-upgrade
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@WeiZhang555 @bergwolf @jodh-intel @egernst