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Author SHA1 Message Date
Alexander Larsson
10cd902f90 Fix change detection when applying tar layers
The default gnu tar format has no sub-second precision mtime support,
and the golang tar writer currently doesn't support that either.
This means if we export the changes from a container we will not
get zeron in the sub-second precision field when the change is applied.

This means we can't compare that to the original without getting a
spurious change. So, we detect this case by treating a case where the
seconds match and either of the two nanoseconds are zero as equal.
2013-12-13 15:46:41 +01:00
Andrews Medina
8b2a7e35c3 Move syscall.Stats logic to os specific file.
related to #2909.
2013-11-28 00:22:47 -02:00
Alexander Larsson
5d76681c3d Implement fallback for getting the size of a container
This moves Driver.Size() to Differ.DiffSize(), removing the empty
implementations in devmapper and dummy, and renaming the one in aufs.

Then we fall back to a container.Changes() implementation in the non-aufs
case.
2013-11-19 10:36:54 +01:00
Alexander Larsson
d69a6a20f0 Use ExportChanges() in runtime.Diff()
This code was duplicated in two places, one which was unused. This
syncs the code and removes the unused version.
2013-11-15 09:49:42 +01:00
Michael Crosby
eace2dbe1d Merge branch 'dm-plugin-new-ChangesDirs' of https://github.com/alexlarsson/docker into alexlarsson-dm-plugin-new-ChangesDirs
Conflicts:
	archive/changes.go
2013-11-14 12:23:01 -08:00
Michael Crosby
2c7f50a77d Add ability to exclude files from tar 2013-11-11 14:30:38 -08:00
Alexander Larsson
b6ef4bc952 archive.ChagesDir() - faster and better implementation
This replaces the current version with the latest version from the
dm branch. Advantages in this version:

We only scan each directory tree once, which means less i/o and less chance
of container changes inbetween the two scans causing inconsistencies.

We avoid comparing some fields for change detection:

* Inode
* size-in-blocks
  These can change during a copy operation (e.g. in the dummy backend)
  without needing to actually reflect a change in content or metadata.

* Ctime
  Any copy operation will create a new Ctime value, and there is no
  API to change it to the "source" value.

* size for directories
  The size of a directory doesn't have to be the same just because you
  recreated the same content as another director. Internal details in
  the filesystem may make these different with no "real" change.
2013-11-11 14:51:19 +01:00
Solomon Hykes
99210c9c6e Don't rely on drivers for diff and export 2013-11-08 02:48:52 +00:00
Solomon Hykes
9ae4bcaaf8 Move Change to the archive package, and fix a leftover merge in
Container.Inject()
2013-11-08 00:45:07 +00:00
Renamed from changes.go (Browse further)