[merged] Various syscontainers fixes #497

giuseppe · 2016-07-22T12:04:26Z

No description provided.

cgwalters · 2016-07-22T13:01:28Z

Atomic/syscontainers.py

+    # 1) Load it from libc.
+    # 2) Run "sync --file-system", supported by coreutils sync.
+    # 3) Use os.sync, available from Python 3.3.
+    # 4) Run "sync".


Holy sync batman! Do we really need any strategy other than the libc one? Why wouldn't ctypes work everywhere?

BTW I think we really want syncfs and not sync because the latter doesn't actually report errors.

I am using a fallback to sync, since sync --file-system FILE is a GNU extension that probably is not present on other implementations.

Hm...ostree is pretty aggressive about using linux extensions although I could imagine some BSD port for the core filesystem bits. But we hard require linux for runc/bubblewrap, so I don't see an issue with hard requiring syncfs to be available in libc either, right?

cgwalters · 2016-07-22T14:07:55Z

syncfs aside I scanned this and the high level looks sane to me.

giuseppe · 2016-07-22T15:02:20Z

I have pushed a new version where I use only syncfs.

I have not used a fixup patch as I wanted to try out signed git commits and that wouldn't work with it

cgwalters · 2016-07-22T15:12:51Z

Unfortunately, because Homu rewrites/rebases it conflicts with signed commits.

giuseppe · 2016-07-23T11:25:27Z

@rhatdan are you fine with these changes? They fix a few outstanding issues

rhatdan · 2016-07-24T11:19:20Z

Atomic/syscontainers.py

@@ -306,6 +346,19 @@ def get_system_containers(self):
            ret.append(container)
        return ret

+    def delete_image(self, image):
+        repo = self._get_ostree_repo()


I would prefer that this not return true/false, since it should really throw an exception on failure. And caller should not call if it is not an ostree image.

are you fine if I add an allow_no_image parameter? I would like that the delete_image does not need a time of check to time of use race condition, that can happen if another process deletes the same image between the time the caller check its existence and deletes it.

I am fine with catching the IMAGE DOES NOT EXIST and returning success. If the intent is to remove an object and the object does not exist, I consider that a success.

ok thanks, I have pushed a new version which implements this (and removed the allow_no_image parameter). We don't report the IMAGE DOES NOT EXIST anymore and attempt to delete the image from OSTree after checking there is one.

rh-atomic-bot · 2016-07-25T19:22:21Z

☔ The latest upstream changes (presumably 45c0902) made this pull request unmergeable. Please resolve the merge conflicts.

giuseppe · 2016-07-25T20:00:29Z

rebased ⬆️

rh-atomic-bot · 2016-07-26T12:09:29Z

☔ The latest upstream changes (presumably #499) made this pull request unmergeable. Please resolve the merge conflicts.

giuseppe · 2016-07-26T12:35:12Z

and rebased once again ⬆️ :)

@rhatdan is there anything more that should be changed?

rhatdan · 2016-07-26T14:46:23Z

@rh-atomic-bot r+

rh-atomic-bot · 2016-07-26T14:46:23Z

📌 Commit 36fe6ab has been approved by rhatdan

rh-atomic-bot · 2016-07-26T14:46:28Z

⌛ Testing commit 36fe6ab with merge d05a66b...

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rh-atomic-bot · 2016-07-26T14:55:36Z

💔 Test failed - status-atomicjenkins

jlebon · 2016-07-26T15:09:11Z

@rh-atomic-bot retry

Do not stop processing containers when encountering a container which was not started up correctly, so that has not runc state. Also fixes a "the JSON object must be str, not 'bytes'" error with Python3. Signed-off-by: Giuseppe Scrivano <[email protected]>

Signed-off-by: Giuseppe Scrivano <[email protected]>

If we had all the data layers, we would skip the creation of the metadata commit, so that the sequence: atomic images delete foo atomic images pull foo would not create the image foo to be again present in the repository, unless a prune would happen in between the two operations. Signed-off-by: Giuseppe Scrivano <[email protected]>

It avoids some random SIGPIPEs during the tests Signed-off-by: Giuseppe Scrivano <[email protected]>

It breaks the tests suite This reverts commit 7fcd49e.

giuseppe · 2016-07-26T15:42:09Z

@jlebon @cgwalters rebased again ⬆️

jlebon · 2016-07-26T15:52:22Z

@rh-atomic-bot r+ 0165fa5

rh-atomic-bot · 2016-07-26T15:52:27Z

⌛ Testing commit 0165fa5 with merge 1645062...

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rh-atomic-bot · 2016-07-26T16:06:55Z

☀️ Test successful - status-atomicjenkins
Approved by: jlebon
Pushing 1645062 to master...

4abc3eb changed this to be done only when there are Docker images that are pruned as well. Change it back to the previous behavior. Closes: projectatomic#496 Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

This is required to process Docker whiteouts files in OSTree, which are not enabled by this patch. There is an issue in the way the RepoCheckoutOptions object is mapped by glib, as the C struct is using bit fields that are not supported by the introspection, so use the CLI version of OSTree for now. Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

By default OSTree uses `fsync' after each file is checked out. Disable `fsync' and use `syncfs' after every layer was checked out to the file system. Closes: projectatomic#491 Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

Use `os.path.lexists' to verify its presence. Delete the symlink before the deployments, so that the container doesn't look installed while its being deleted. Closes: projectatomic#495 Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

Do not stop processing containers when encountering a container which was not started up correctly, so that has not runc state. Also fixes a "the JSON object must be str, not 'bytes'" error with Python3. Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

If we had all the data layers, we would skip the creation of the metadata commit, so that the sequence: atomic images delete foo atomic images pull foo would not create the image foo to be again present in the repository, unless a prune would happen in between the two operations. Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

It avoids some random SIGPIPEs during the tests Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

It breaks the tests suite This reverts commit 7fcd49e. Closes: projectatomic#497 Approved by: jlebon

cgwalters reviewed Jul 22, 2016
View reviewed changes

giuseppe force-pushed the various-syscontainers-fixes branch from fdff99a to 233d8ad Compare July 22, 2016 15:02

giuseppe force-pushed the various-syscontainers-fixes branch from 233d8ad to 337ffdc Compare July 23, 2016 11:23

rhatdan reviewed Jul 24, 2016
View reviewed changes

giuseppe force-pushed the various-syscontainers-fixes branch 3 times, most recently from e104d01 to 15feab7 Compare July 25, 2016 13:14

giuseppe force-pushed the various-syscontainers-fixes branch from 15feab7 to 44c087c Compare July 25, 2016 19:51

giuseppe force-pushed the various-syscontainers-fixes branch from 44c087c to 36fe6ab Compare July 26, 2016 12:34

giuseppe added 5 commits July 26, 2016 17:29

delete: support images from the OSTree repository

90aa5cb

Signed-off-by: Giuseppe Scrivano <[email protected]>

tests: write to file before using grep

0c7f31d

It avoids some random SIGPIPEs during the tests Signed-off-by: Giuseppe Scrivano <[email protected]>

Revert "Migrate script should now work since we are after docker-1.10"

0165fa5

It breaks the tests suite This reverts commit 7fcd49e.

giuseppe force-pushed the various-syscontainers-fixes branch from 36fe6ab to 0165fa5 Compare July 26, 2016 15:41

rh-atomic-bot changed the title ~~Various syscontainers fixes~~ [merged] Various syscontainers fixes Jul 26, 2016

rh-atomic-bot closed this in c39386d Jul 26, 2016

giuseppe added a commit to giuseppe/atomic that referenced this pull request Jul 26, 2016

delete: support images from the OSTree repository

e188639

Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

giuseppe added a commit to giuseppe/atomic that referenced this pull request Jul 26, 2016

tests: write to file before using grep

a2a4479

It avoids some random SIGPIPEs during the tests Signed-off-by: Giuseppe Scrivano <[email protected]> Closes: projectatomic#497 Approved by: jlebon

giuseppe added a commit to giuseppe/atomic that referenced this pull request Jul 26, 2016

Revert "Migrate script should now work since we are after docker-1.10"

4755822

It breaks the tests suite This reverts commit 7fcd49e. Closes: projectatomic#497 Approved by: jlebon

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[merged] Various syscontainers fixes #497

[merged] Various syscontainers fixes #497

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[merged] Various syscontainers fixes #497

[merged] Various syscontainers fixes #497

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