incorrect partition size in UI

[Gleb]

{
    "build_id": "2014-07-28_10-30-48",
    "ostf_sha": "8c328521b1444f22c50463b9432193e20ed33813",
    "build_number": "367",
    "auth_required": true,
    "api": "1.0",
    "nailgun_sha": "83cc9ed44ebc8dd97248483b6d414ebbc4cff3c0",
    "production": "docker",
    "fuelmain_sha": "9adfbf5a52cedbdd16ec1a74f6c44c5b3419b87c",
    "astute_sha": "aa5aed61035a8dc4035ab1619a8bb540a7430a95",
    "feature_groups": [
        "mirantis"
    ],
    "release": "5.1",
    "fuellib_sha": "d1c7f67b3cf51978d3178c8666ea398f2477dcb5"
}

I tryied to emulate Ceph Journals on SSD and created 0.3Gb disks on test VMs.
Fuel sees all 0.3Gb but when I click on "USE ALL ALLOWED SPACE" it allocate only 7Mb.

Screenshot is atached.

[Nastya Urlapova (aurlapova)]

Gleb, please try to reproduce on 5.1-9(RC3)

[Gleb (gleb-q)]

It reproduced on small volumes (1Gb or less)

{
    "build_id": "2014-09-17_21-40-34",
    "ostf_sha": "64cb59c681658a7a55cc2c09d079072a41beb346",
    "build_number": "11",
    "auth_required": true,
    "api": "1.0",
    "nailgun_sha": "eb8f2b358ea4bb7eb0b2a0075e7ad3d3a905db0d",
    "production": "docker",
    "fuelmain_sha": "8ef433e939425eabd1034c0b70e90bdf888b69fd",
    "astute_sha": "f5fbd89d1e0e1f22ef9ab2af26da5ffbfbf24b13",
    "feature_groups": [
        "mirantis"
    ],
    "release": "5.1",
    "release_versions": {
        "2014.1.1-5.1": {
            "VERSION": {
                "build_id": "2014-09-17_21-40-34",
                "ostf_sha": "64cb59c681658a7a55cc2c09d079072a41beb346",
                "build_number": "11",
                "api": "1.0",
                "nailgun_sha": "eb8f2b358ea4bb7eb0b2a0075e7ad3d3a905db0d",
                "production": "docker",
                "fuelmain_sha": "8ef433e939425eabd1034c0b70e90bdf888b69fd",
                "astute_sha": "f5fbd89d1e0e1f22ef9ab2af26da5ffbfbf24b13",
                "feature_groups": [
                    "mirantis"
                ],
                "release": "5.1",
                "fuellib_sha": "d9b16846e54f76c8ebe7764d2b5b8231d6b25079"
            }
        }
    },
    "fuellib_sha": "d9b16846e54f76c8ebe7764d2b5b8231d6b25079"
}

[Dmitry Pyzhov (dpyzhov)]

It happens because we lock 200Mb on each disk for boot image. It was done in order to avoid issues with incorrect boot settings in bios. We are going to get rid of it in future. There is a bug https://bugs.launchpad.net/fuel/+bug/1258347 and a blueprint https://blueprints.launchpad.net/fuel/+spec/volume-manager-refactoring for that.