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76 Commits

Author SHA1 Message Date
Guillaume J. Charmes 05d70cbcf4
More dm unit tests 2013-11-13 16:46:10 -08:00
Guillaume J. Charmes 3aaef96e36 Merge branch 'shykes-0.6.5-dm-plugin' into refactor_dm 2013-11-13 15:44:13 -08:00
Guillaume J. Charmes 4bebca848e
Add devmapper_test.go 2013-11-13 15:35:52 -08:00
Michael Crosby 6b3dd02bb8 Add test coverage for devicemapper driver.go 2013-11-13 14:56:26 -08:00
Michael Crosby 80e7319558 Make sure setInitialized is called when device is mounted 2013-11-13 14:54:47 -08:00
Guillaume J. Charmes 1d188c8737
Create devmapper_wrapper.go 2013-11-13 14:36:31 -08:00
Guillaume J. Charmes 46ab7d1e8a Merge pull request #15 from alexlarsson/dm-plugin-explicit-init 
Remove devicemapper lazy initialization
 2013-11-13 10:46:24 -08:00
Michael Crosby 5d9723002b Allow drivers to implement ApplyDiff in Differ interface 2013-11-11 19:09:57 -08:00
Michael Crosby 4d1a537433 Remove Differ and Changer interfaces 
Add the methods to the Driver interface
to force the drivers to implement the methods
 2013-11-11 12:10:53 -08:00
Alexander Larsson e82f8c1661 Implement fallback operation for driver.Diff() 
This moves the Diff() operation to a separate Differ interface and
implements a fallback that uses the Changes() results to encode
a diff tar.
 2013-11-11 17:46:07 +01:00
Alexander Larsson b5795749d1 Remove devicemapper lazy initialization 
We now always initialize devicemapper on startup, so
no need for the code that did lazy initialization, we
just delete it.
 2013-11-11 13:29:27 +01:00
Michael Crosby 9514767587 Allow driver to provide changes if it impl the Changer interface 2013-11-08 14:54:20 -08:00
Michael Crosby 51c93c0f33 Fix aufs error at startup 
Add String methods to other drivers
 2013-11-07 19:02:15 -08:00
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
Solomon Hykes f1127b9308 gofmt 2013-11-07 23:58:03 +00:00
Solomon Hykes 4a8a7d4edd devmapper: port to the new driver API and reactivate driver 2013-11-07 22:41:55 +00:00
Michael Crosby 752bfba2c5 Add graph driver registration 2013-11-04 15:22:34 -08:00
Solomon Hykes 6c77f2c189 devmapper: rename plugin*.go to driver*.go 2013-11-04 17:23:46 +00:00
Solomon Hykes b77c5c5984 devmapper: renamed DMBackend to Driver 2013-11-04 17:22:43 +00:00
Solomon Hykes d23b9e8734 devmapper: implement OnRemove 2013-11-02 21:25:06 +00:00
Solomon Hykes d2c2c2c116 devmapper: rename Create() to OnCreate(), cleanup tests 2013-11-01 19:30:30 +00:00
Solomon Hykes d64df7c765 Work In Progress: fix devmapper plugin, first independent test passes. 2013-11-01 19:04:08 +00:00
Solomon Hykes 86dd2473c1 Work In Progress: devmapper backend plugin 2013-11-01 05:06:49 +00:00
Alexander Larsson 2812baf395 devmapper: Fix prefix name to work with udev 
Udev escapes "," used in device names to 0\x2c which breaks libdevmapper.
Instead use : to escape minor and minor which works.
 2013-10-18 11:39:47 +02:00
Alexander Larsson 572b1fd9be devmapper: Fix major/minor extraction 
The way devices are mapped is a bit more complex than before.
This implements the method from new_decode_dev in:
https://github.com/mirrors/linux-2.6/blob/master/include/linux/kdev_t.h

Which is what is needed on kernels > 2.6
 2013-10-18 11:38:21 +02:00
Solomon Hykes 4756ad248a devmapper: use major,minor of underlying device in devmapper device name, for readability. 2013-10-18 08:30:53 +00:00
Solomon Hykes dfb77274ce devmapper: clearer make the 'unknown base hash' error message more understandable 2013-10-18 08:22:42 +00:00
Solomon Hykes 73545199a8 Merge remote-tracking branch 'alexlarsson/dm-status' into dm 
Conflicts:
	devmapper/deviceset.go
 2013-10-18 07:17:13 +00:00
Solomon Hykes 0ad35c6746 devmapper: cleanup error reporting 2013-10-18 07:09:13 +00:00
Solomon Hykes 5e363072f5 Merge branch 'dm' of ssh://github.com/dotcloud/docker into dm 2013-10-18 06:51:50 +00:00
Solomon Hykes 9f85a967bb Merge pull request #2269 from alexlarsson/dm-blocksize 
devmapper: Use a smaller blocksize for the thin-pool
 2013-10-17 22:50:33 -07:00
Solomon Hykes 85a36b3b53 devmapper: rename deviceset_devmapper.go to deviceset.go 2013-10-18 05:19:22 +00:00
Solomon Hykes d3505d836a Merge remote-tracking branch 'alexlarsson/dm-readonly-images' into dm 
Conflicts:
	devmapper/deviceset_devmapper.go
 2013-10-18 03:40:46 +00:00
Solomon Hykes 4bd6021806 devmapper: Rename DeviceSetDM to DeviceSet 2013-10-18 00:07:56 +00:00
Guillaume J. Charmes 31b883b076
Add error checking and error messages 2013-10-17 15:04:14 -07:00
Alexander Larsson a14496ce89 Devmapper: Mount images readonly when calculating changes 
There is no need to have this be writable, and there is a chance
that e.g. atime updates will cause writes to the image which is
bad for disk use wrt sharing between all containers.
 2013-10-17 16:14:53 +02:00
Alexander Larsson 8abcc8e713 devmapper: Use a smaller blocksize for the thin-pool 
As per the thin provisioning docs for creating the pool:

   $data_block_size gives the smallest unit of disk space that can be
   allocated at a time expressed in units of 512-byte sectors.
   $data_block_size must be between 128 (64KB) and 2097152 (1GB) and a
   multiple of 128 (64KB). $data_block_size cannot be changed after the
   thin-pool is created. People primarily interested in thin provisioning
   may want to use a value such as 1024 (512KB). People doing lots of
   snapshotting may want a smaller value such as 128 (64KB).

The switch from 512 (which we used before) to 128 (recommended above
for lots of snapshoting) means a simple container creation (based on the
mattdm/fedora:f19 image) adds 1 MB of diskspace rather than 3.6.
This seems more in tune with how docker is typically used.
 2013-10-17 15:33:00 +02:00
Alexander Larsson d733cdcebb Show devicemapper status in "docker info" 
This shows the current global diskspace use in "docker info"
 2013-10-17 15:32:07 +02:00
Alexander Larsson e6a73e65a2 devicemapper: Use device/inode of the root dir, not the image 
This way the devicemapper prefix stays stable even if we're not
using loopback mounted devices.
 2013-10-17 09:53:09 +02:00
Solomon Hykes ad2fbd9e87 devmapper: error reporting workaround in waitRemove() 2013-10-17 01:49:51 +00:00
Solomon Hykes e5d7472a0d devmapper: small fixes in error reporting 2013-10-17 01:49:27 +00:00
Solomon Hykes 7d3c7e2b29 devmapper: debug messages 2013-10-17 01:47:03 +00:00
Solomon Hykes f1d07e2dbe devmapper: prefix device names with the dev_id+inode of the data image 2013-10-17 01:46:28 +00:00
Solomon Hykes ad968ef3ef devmapper: add useful comments 2013-10-17 01:42:05 +00:00
Solomon Hykes c688e9b5a6 devmapper: debug messages 2013-10-16 23:27:33 +00:00
Solomon Hykes ea04f3de72 devmapper: wait for devices to be effectively removed before returning a successful remove 2013-10-16 23:26:37 +00:00
Solomon Hykes 153248b60f devicemapper: remove unused code 2013-10-16 23:23:35 +00:00
Solomon Hykes 1711de4b09 devmapper: wait for devices to be effectively unmounted before removing them 2013-10-16 23:06:07 +00:00
Solomon Hykes 11d695a297 Add debug messages while testing devicemapper 2013-10-16 20:45:59 +00:00
Guillaume J. Charmes 3a246ac3d1 Change default values for devicemapper as variable instead of env 2013-10-16 20:42:50 +00:00