Restore master node with custom path failed with error

[Egor Kotko]

{"build_id": "2015-06-02_16-28-25", "build_number": "497", "release_versions": {"2014.2.2-6.1": {"VERSION": {"build_id": "2015-06-02_16-28-25", "build_number": "497", "api": "1.0", "fuel-library_sha": "d757cd41e4f8273d36ef85b8207e554e5422c5b0", "nailgun_sha": "3830bdcb28ec050eed399fe782cc3dd5fbf31bde", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "4fc55db0265bbf39c369df398b9dc7d6469ba13b", "astute_sha": "cbae24e9904be2ff8d1d49c0c48d1bdc33574228", "fuel-ostf_sha": "f899e16c4ce9a60f94e7128ecde1324ea41d09d4", "release": "6.1", "fuelmain_sha": "bcc909ffc5dd5156ba54cae348b6a07c1b607b24"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "d757cd41e4f8273d36ef85b8207e554e5422c5b0", "nailgun_sha": "3830bdcb28ec050eed399fe782cc3dd5fbf31bde", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "4fc55db0265bbf39c369df398b9dc7d6469ba13b", "astute_sha": "cbae24e9904be2ff8d1d49c0c48d1bdc33574228", "fuel-ostf_sha": "f899e16c4ce9a60f94e7128ecde1324ea41d09d4", "release": "6.1", "fuelmain_sha": "bcc909ffc5dd5156ba54cae348b6a07c1b607b24"}

Steps to reproduce:
1. Deploy env Ubuntu 1Contr, 1Compute
2. Backup master with custom path for arch:
dockerctl backup /var/lib/docker/
3. Restore master
dockerctl restore /var/lib/docker/fuel_backup.tar.lrz

Actual result:
[root@nailgun docker]# dockerctl restore /var/lib/docker/fuel_backup.tar.lrz
Unable to parse timestamp in archive.
Restore failed!

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/188003

[Matthew Mosesohn (raytrac3r)]

This could have a big impact for our users, especially those who might move their backups to a different disk. Moving to high

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/188003
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=cf69b9e3eca30dfc4bba3de00620bf0524f81d8b
Submitter: Jenkins
Branch: master

commit cf69b9e3eca30dfc4bba3de00620bf0524f81d8b
Author: Matthew Mosesohn <email address hidden>
Date: Wed Jun 3 16:27:13 2015 +0300

    Fix backup filename for dockerctl backup

    The backup file should contain the timestamp
    of the time when the backup was run so that it
    can be parsed. This only affected custom backups
    because the default backups has the timestamp
    in the path.

    Change-Id: I184708a5b4077adda9810232a5ae205017a8238e
    Closes-Bug: #1461542

[Egor Kotko (ykotko)]

Verified on:
{"build_id": "2015-06-02_16-28-25", "build_number": "497", "release_versions": {"2014.2.2-6.1": {"VERSION": {"build_id": "2015-06-02_16-28-25", "build_number": "497", "api": "1.0", "fuel-library_sha": "d757cd41e4f8273d36ef85b8207e554e5422c5b0", "nailgun_sha": "3830bdcb28ec050eed399fe782cc3dd5fbf31bde", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "4fc55db0265bbf39c369df398b9dc7d6469ba13b", "astute_sha": "cbae24e9904be2ff8d1d49c0c48d1bdc33574228", "fuel-ostf_sha": "f899e16c4ce9a60f94e7128ecde1324ea41d09d4", "release": "6.1", "fuelmain_sha": "bcc909ffc5dd5156ba54cae348b6a07c1b607b24"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "d757cd41e4f8273d36ef85b8207e554e5422c5b0", "nailgun_sha": "3830bdcb28ec050eed399fe782cc3dd5fbf31bde", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "4fc55db0265bbf39c369df398b9dc7d6469ba13b", "astute_sha": "cbae24e9904be2ff8d1d49c0c48d1bdc33574228", "fuel-ostf_sha": "f899e16c4ce9a60f94e7128ecde1324ea41d09d4", "release": "6.1", "fuelmain_sha": "bcc909ffc5dd5156ba54cae348b6