Now, every Unmount() call takes a burden to parse the whole nine yards
of /proc/self/mountinfo to figure out whether the given mount point is
mounted or not (and returns an error in case parsing fails somehow).
Instead, let's just call umount() and ignore EINVAL, which results
in the same behavior, but much better performance.
Note that EINVAL is returned from umount(2) not only in the case when
`target` is not mounted, but also for invalid flags. As the flags are
hardcoded here, it can't be the case.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: a1d095199ddb9b4811e1417b6adcdfadad7d73f4
Component: engine
The mountinfo parser implemented via `fmt.Sscanf()` is slower than the one
using `strings.Split()` and `strconv.Atoi()`. This rewrite helps to speed it
up to a factor of 8x, here is a result from go bench:
> BenchmarkParsingScanf-4 300 22294112 ns/op
> BenchmarkParsingSplit-4 3000 2780703 ns/op
I tried other approaches, such as using `fmt.Sscanf()` for the first
three (integer) fields and `strings.Split()` for the rest, but it slows
things down considerably:
> BenchmarkParsingMixed-4 1000 8827058 ns/op
Note the old code uses `fmt.Sscanf`, when a linear search for '-' field,
when a split for the last 3 fields. The new code relies on a single
split.
I have also added more comments to aid in future development.
Finally, the test data is fixed to now have white space before the first field.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: c611f18a7f16d8aa878a5a5c7537d23a0937c40a
Component: engine
The flow of getSourceMount was:
1 get all entries from /proc/self/mountinfo
2 do a linear search for the `source` directory
3 if found, return its data
4 get the parent directory of `source`, goto 2
The repeated linear search through the whole mountinfo (which can have
thousands of records) is inefficient. Instead, let's just
1 collect all the relevant records (only those mount points
that can be a parent of `source`)
2 find the record with the longest mountpath, return its data
This was tested manually with something like
```go
func TestGetSourceMount(t *testing.T) {
mnt, flags, err := getSourceMount("/sys/devices/msr/")
assert.NoError(t, err)
t.Logf("mnt: %v, flags: %v", mnt, flags)
}
```
...but it relies on having a specific mount points on the system
being used for testing.
[v2: add unit tests for ParentsFilter]
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: 871c957242df9f8c74faf751a2f14eb5178d4140
Component: engine
Use mount.SingleEntryFilter as we're only interested in a single entry.
Test case data of TestShouldUnmountRoot is modified accordingly, as
from now on:
1. `info` can't be nil;
2. the mountpoint check is not performed (as SingleEntryFilter
guarantees it to be equal to daemon.root).
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: d3ebcde82aae79be8cbecab365367b17adac4b3e
Component: engine
Functions `GetMounts()` and `parseMountTable()` return all the entries
as read and parsed from /proc/self/mountinfo. In many cases the caller
is only interested only one or a few entries, not all of them.
One good example is `Mounted()` function, which looks for a specific
entry only. Another example is `RecursiveUnmount()` which is only
interested in mount under a specific path.
This commit adds `filter` argument to `GetMounts()` to implement
two things:
1. filter out entries a caller is not interested in
2. stop processing if a caller is found what it wanted
`nil` can be passed to get a backward-compatible behavior, i.e. return
all the entries.
A few filters are implemented:
- `PrefixFilter`: filters out all entries not under `prefix`
- `SingleEntryFilter`: looks for a specific entry
Finally, `Mounted()` is modified to use `SingleEntryFilter()`, and
`RecursiveUnmount()` is using `PrefixFilter()`.
Unit tests are added to check filters are working.
[v2: ditch NoFilter, use nil]
[v3: ditch GetMountsFiltered()]
[v4: add unit test for filters]
[v5: switch to gotestyourself]
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: bb934c6aca3e77541dd4fd51b9ab2706294dadda
Component: engine
The unit test is checking that setting of non-default StopTimeout
works, but it checked the value of StopSignal instead.
Amazingly, the test was working since the default StopSignal is SIGTERM,
which has the numeric value of 15.
Fixes: commit e66d21089 ("Add config parameter to change ...")
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: 743f5afcd13659e2b6b76791415876797e2ede52
Component: engine
This moves the platform specific stuff in a separate package and keeps
the `volume` package and the defined interfaces light to import.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 6a70fd222b95643a8a6b88e2634d5f085ae4122a
Component: engine
All `plugins` tests that require an `ExperimentalDaemon` are migrated
to `integration/plugin/*` and start an experimental daemon to test on
it.
The end goal being to remove the `experimental` build.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 69bab3832ce1d72dd1d3ed2f2b53143ec9ff102c
Component: engine
This makes sure that if the daemon root was already a self-binded mount
(thus meaning the daemonc only performed a remount) that the daemon does
not try to unmount.
Example:
```
$ sudo mount --bind /var/lib/docker /var/lib/docker
$ sudo dockerd &
```
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: c403f0036b9945bd58a84e2c93f794ed9861fe99
Component: engine
The primary need for this is x/net/context now is just a type alias to
the stdlib context package.
This makes issues with conflicts between "golang.org/x/net/context" and
the stdib "context" go away (primarily a concern in interface
definitions/implementations).
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 848ef1da8b0d1c01a84fbe215f24f00fa741690d
Component: engine
Also starts to create more "poll/check" function to `internal/test/daemon`.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: aa0db6f9e1d0fd0420271f419d0d225089a95bbd
Component: engine
Instead of using a global store for volume drivers, scope the driver
store to the caller (e.g. the volume store). This makes testing much
simpler.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 977109d808ae94eb3931ae920338b1aa669f627e
Component: engine
Since the volume store already provides this functionality, we should
just use it rather than duplicating it.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 63826e291ba3b88443b64802084bbb3931857b56
Component: engine
This unblocks the client to take other restore requests and makes sure
that a long/stuck request can't block the client forever.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 806700e410a1b30aa1033d71d825e57880c75298
Component: engine
… and change a bit the method signature
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 42f6fdf059807ecbe66cce90676021363a541154
Component: engine
Porting helpers from `integration-cli/daemon.Daemon` to this struct
and use the API instead of the cli.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 9722214c8add2a83f6c4974848139cadc79d9f0e
Component: engine
Update all build stages to output artefacts to /build
Signed-off-by: Jeff Hajewski <jeff.hajewski@gmail.com>
Upstream-commit: 00555f7b261111084b966920da607a504b068953
Component: engine
- Move go package used by both `integration-cli` and `integration` to
`internal/test/fixtures`.
- Remove fixtures that are not used anymore (moved to `docker/cli` a
while ago) : deploy, notary, secrets.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 5f56503f583f21d655394f755f71849381bd58c7
Component: engine
This fix converts some `client.ContainerCreate` to `container.Create`,
and removes some unneeded `name` fields when test containers are created.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: ab9bb47b05b1dde445a5e4ba78ae97303208dc8b
Component: engine
This fix migrates image tag tests from integration-cli to api tests.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 9bcb960508a6066811cffcca1e35ca44d7f1cf94
Component: engine
- Move the code from `integration-cli` to `internal/test`.
- Use `testingT` and `assert` when creating the registry.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 66de2e6e3b6d927a3396743cd7c363aa9f7b776e
Component: engine
Kir Kolyshkin
Brian Goff
Vincent Demeester
Vincent Demeester
Sebastiaan van Stijn
Alexandre Jomin
Akihiro Suda
Sebastiaan van Stijn
Jeff Hajewski
Anusha Ragunathan
Lorenzo Fontana
Yong Tang
Tibor Vass