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📄 __init__.py(1.4 KB)
📄 __init__.pyc(1.31 KB)
📄 __init__.pyo(1.31 KB)
📄 cc_apt_configure.py(32.8 KB)
📄 cc_apt_configure.pyc(30.2 KB)
📄 cc_apt_configure.pyo(30.2 KB)
📄 cc_apt_pipelining.py(2.44 KB)
📄 cc_apt_pipelining.pyc(2.48 KB)
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📄 cc_bootcmd.py(3.5 KB)
📄 cc_bootcmd.pyc(3.02 KB)
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📄 cc_byobu.py(3.1 KB)
📄 cc_byobu.pyc(3.09 KB)
📄 cc_byobu.pyo(3.09 KB)
📄 cc_ca_certs.py(4.09 KB)
📄 cc_ca_certs.pyc(4.1 KB)
📄 cc_ca_certs.pyo(4.1 KB)
📄 cc_chef.py(13.17 KB)
📄 cc_chef.pyc(10.79 KB)
📄 cc_chef.pyo(10.79 KB)
📄 cc_debug.py(3.08 KB)
📄 cc_debug.pyc(3.35 KB)
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📄 cc_disable_ec2_metadata.py(1.56 KB)
📄 cc_disable_ec2_metadata.pyc(1.57 KB)
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📄 cc_disk_setup.py(32.8 KB)
📄 cc_disk_setup.pyc(28.91 KB)
📄 cc_disk_setup.pyo(28.91 KB)
📄 cc_emit_upstart.py(2 KB)
📄 cc_emit_upstart.pyc(2.15 KB)
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📄 cc_fan.py(2.83 KB)
📄 cc_fan.pyc(3.09 KB)
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📄 cc_final_message.py(2.35 KB)
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📄 cc_foo.py(2.07 KB)
📄 cc_foo.pyc(702 B)
📄 cc_foo.pyo(702 B)
📄 cc_growpart.py(11.51 KB)
📄 cc_growpart.pyc(11.12 KB)
📄 cc_growpart.pyo(11.12 KB)
📄 cc_grub_dpkg.py(2.87 KB)
📄 cc_grub_dpkg.pyc(2.63 KB)
📄 cc_grub_dpkg.pyo(2.63 KB)
📄 cc_keys_to_console.py(2.36 KB)
📄 cc_keys_to_console.pyc(2.39 KB)
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📄 cc_landscape.py(3.93 KB)
📄 cc_landscape.pyc(4.02 KB)
📄 cc_landscape.pyo(4.02 KB)
📄 cc_locale.py(1.16 KB)
📄 cc_locale.pyc(1.16 KB)
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📄 cc_lxd.py(10.27 KB)
📄 cc_lxd.pyc(8.33 KB)
📄 cc_lxd.pyo(8.33 KB)
📄 cc_mcollective.py(5.08 KB)
📄 cc_mcollective.pyc(3.8 KB)
📄 cc_mcollective.pyo(3.8 KB)
📄 cc_migrator.py(3.07 KB)
📄 cc_migrator.pyc(3.18 KB)
📄 cc_migrator.pyo(3.18 KB)
📄 cc_mounts.py(17.24 KB)
📄 cc_mounts.pyc(14.59 KB)
📄 cc_mounts.pyo(14.59 KB)
📄 cc_ntp.py(20.19 KB)
📄 cc_ntp.pyc(15.74 KB)
📄 cc_ntp.pyo(15.74 KB)
📄 cc_package_update_upgrade_install.py(4.11 KB)
📄 cc_package_update_upgrade_install.pyc(4.01 KB)
📄 cc_package_update_upgrade_install.pyo(4.01 KB)
📄 cc_phone_home.py(3.92 KB)
📄 cc_phone_home.pyc(3.28 KB)
📄 cc_phone_home.pyo(3.28 KB)
📄 cc_power_state_change.py(7.65 KB)
📄 cc_power_state_change.pyc(7.8 KB)
📄 cc_power_state_change.pyo(7.8 KB)
📄 cc_puppet.py(8.86 KB)
📄 cc_puppet.pyc(7.06 KB)
📄 cc_puppet.pyo(7.06 KB)
📄 cc_resizefs.py(10.79 KB)
📄 cc_resizefs.pyc(9.15 KB)
📄 cc_resizefs.pyo(9.15 KB)
📄 cc_resolv_conf.py(3.43 KB)
📄 cc_resolv_conf.pyc(3.44 KB)
📄 cc_resolv_conf.pyo(3.44 KB)
📄 cc_rh_subscription.py(15.65 KB)
📄 cc_rh_subscription.pyc(13.5 KB)
📄 cc_rh_subscription.pyo(13.5 KB)
📄 cc_rightscale_userdata.py(3.76 KB)
📄 cc_rightscale_userdata.pyc(2.82 KB)
📄 cc_rightscale_userdata.pyo(2.82 KB)
📄 cc_rsyslog.py(14.1 KB)
📄 cc_rsyslog.pyc(10.56 KB)
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📄 cc_runcmd.py(3.11 KB)
📄 cc_runcmd.pyc(2.73 KB)
📄 cc_runcmd.pyo(2.73 KB)
📄 cc_salt_minion.py(4.66 KB)
📄 cc_salt_minion.pyc(3.78 KB)
📄 cc_salt_minion.pyo(3.78 KB)
📄 cc_scripts_per_boot.py(1.2 KB)
📄 cc_scripts_per_boot.pyc(1.2 KB)
📄 cc_scripts_per_boot.pyo(1.2 KB)
📄 cc_scripts_per_instance.py(1.38 KB)
📄 cc_scripts_per_instance.pyc(1.38 KB)
📄 cc_scripts_per_instance.pyo(1.38 KB)
📄 cc_scripts_per_once.py(1.31 KB)
📄 cc_scripts_per_once.pyc(1.31 KB)
📄 cc_scripts_per_once.pyo(1.31 KB)
📄 cc_scripts_user.py(1.42 KB)
📄 cc_scripts_user.pyc(1.38 KB)
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📄 cc_scripts_vendor.py(1.38 KB)
📄 cc_scripts_vendor.pyc(1.46 KB)
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📄 cc_seed_random.py(4.39 KB)
📄 cc_seed_random.pyc(4.53 KB)
📄 cc_seed_random.pyo(4.53 KB)
📄 cc_set_hostname.py(2.95 KB)
📄 cc_set_hostname.pyc(2.72 KB)
📄 cc_set_hostname.pyo(2.72 KB)
📄 cc_set_passwords.py(8.45 KB)
📄 cc_set_passwords.pyc(7.62 KB)
📄 cc_set_passwords.pyo(7.62 KB)
📄 cc_snap.py(8.11 KB)
📄 cc_snap.pyc(7.54 KB)
📄 cc_snap.pyo(7.54 KB)
📄 cc_snap_config.py(5.37 KB)
📄 cc_snap_config.pyc(5.03 KB)
📄 cc_snap_config.pyo(5.03 KB)
📄 cc_snappy.py(9.69 KB)
📄 cc_snappy.pyc(9.27 KB)
📄 cc_snappy.pyo(9.27 KB)
📄 cc_spacewalk.py(2.89 KB)
📄 cc_spacewalk.pyc(2.91 KB)
📄 cc_spacewalk.pyo(2.91 KB)
📄 cc_ssh.py(10.59 KB)
📄 cc_ssh.pyc(9.11 KB)
📄 cc_ssh.pyo(9.11 KB)
📄 cc_ssh_authkey_fingerprints.py(3.43 KB)
📄 cc_ssh_authkey_fingerprints.pyc(3.94 KB)
📄 cc_ssh_authkey_fingerprints.pyo(3.94 KB)
📄 cc_ssh_import_id.py(2.88 KB)
📄 cc_ssh_import_id.pyc(2.72 KB)
📄 cc_ssh_import_id.pyo(2.72 KB)
📄 cc_timezone.py(1.15 KB)
📄 cc_timezone.pyc(1.15 KB)
📄 cc_timezone.pyo(1.15 KB)
📄 cc_ubuntu_advantage.py(6.08 KB)
📄 cc_ubuntu_advantage.pyc(6.12 KB)
📄 cc_ubuntu_advantage.pyo(6.12 KB)
📄 cc_ubuntu_drivers.py(5.66 KB)
📄 cc_ubuntu_drivers.pyc(4.63 KB)
📄 cc_ubuntu_drivers.pyo(4.63 KB)
📄 cc_update_etc_hosts.py(3.33 KB)
📄 cc_update_etc_hosts.pyc(2.99 KB)
📄 cc_update_etc_hosts.pyo(2.99 KB)
📄 cc_update_hostname.py(1.58 KB)
📄 cc_update_hostname.pyc(1.66 KB)
📄 cc_update_hostname.pyo(1.66 KB)
📄 cc_users_groups.py(7.06 KB)
📄 cc_users_groups.pyc(6.76 KB)
📄 cc_users_groups.pyo(6.76 KB)
📄 cc_write_files.py(4.95 KB)
📄 cc_write_files.pyc(5.13 KB)
📄 cc_write_files.pyo(5.13 KB)
📄 cc_yum_add_repo.py(4.27 KB)
📄 cc_yum_add_repo.pyc(3.88 KB)
📄 cc_yum_add_repo.pyo(3.88 KB)
📄 cc_zypper_add_repo.py(7.62 KB)
📄 cc_zypper_add_repo.pyc(7.12 KB)
📄 cc_zypper_add_repo.pyo(7.12 KB)
📄 schema.py(14.06 KB)
📄 schema.pyc(13.83 KB)
📄 schema.pyo(13.83 KB)

Editing: cc_resizefs.py

# Copyright (C) 2011 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

"""Resizefs: cloud-config module which resizes the filesystem"""

import errno
import getopt
import os
import re
import shlex
import stat
from textwrap import dedent

from cloudinit.config.schema import (
    get_schema_doc, validate_cloudconfig_schema)
from cloudinit.settings import PER_ALWAYS
from cloudinit import util

NOBLOCK = "noblock"

frequency = PER_ALWAYS
distros = ['all']

schema = {
    'id': 'cc_resizefs',
    'name': 'Resizefs',
    'title': 'Resize filesystem',
    'description': dedent("""\
        Resize a filesystem to use all avaliable space on partition. This
        module is useful along with ``cc_growpart`` and will ensure that if the
        root partition has been resized the root filesystem will be resized
        along with it. By default, ``cc_resizefs`` will resize the root
        partition and will block the boot process while the resize command is
        running. Optionally, the resize operation can be performed in the
        background while cloud-init continues running modules. This can be
        enabled by setting ``resize_rootfs`` to ``true``. This module can be
        disabled altogether by setting ``resize_rootfs`` to ``false``."""),
    'distros': distros,
    'examples': [
        'resize_rootfs: false  # disable root filesystem resize operation'],
    'frequency': PER_ALWAYS,
    'type': 'object',
    'properties': {
        'resize_rootfs': {
            'enum': [True, False, NOBLOCK],
            'description': dedent("""\
                Whether to resize the root partition. Default: 'true'""")
        }
    }
}

__doc__ = get_schema_doc(schema)  # Supplement python help()

def _resize_btrfs(mount_point, devpth):
    # If "/" is ro resize will fail. However it should be allowed since resize
    # makes everything bigger and subvolumes that are not ro will benefit.
    # Use a subvolume that is not ro to trick the resize operation to do the
    # "right" thing. The use of ".snapshot" is specific to "snapper" a generic
    # solution would be walk the subvolumes and find a rw mounted subvolume.
    if (not util.mount_is_read_write(mount_point) and
            os.path.isdir("%s/.snapshots" % mount_point)):
        return ('btrfs', 'filesystem', 'resize', 'max',
                '%s/.snapshots' % mount_point)
    else:
        return ('btrfs', 'filesystem', 'resize', 'max', mount_point)

def _resize_ext(mount_point, devpth):
    return ('resize2fs', devpth)

def _resize_xfs(mount_point, devpth):
    return ('xfs_growfs', mount_point)

def _resize_ufs(mount_point, devpth):
    return ('growfs', '-y', mount_point)

def _resize_zfs(mount_point, devpth):
    return ('zpool', 'online', '-e', mount_point, devpth)

def _get_dumpfs_output(mount_point):
    return util.subp(['dumpfs', '-m', mount_point])[0]

def _get_gpart_output(part):
    return util.subp(['gpart', 'show', part])[0]

def _can_skip_resize_ufs(mount_point, devpth):
    # extract the current fs sector size
    """
    # dumpfs -m /
    # newfs command for / (/dev/label/rootfs)
      newfs -L rootf -O 2 -U -a 4 -b 32768 -d 32768 -e 4096 -f 4096 -g 16384
            -h 64 -i 8192 -j -k 6408 -m 8 -o time -s 58719232 /dev/label/rootf
    """
    cur_fs_sz = None
    frag_sz = None
    dumpfs_res = _get_dumpfs_output(mount_point)
    for line in dumpfs_res.splitlines():
        if not line.startswith('#'):
            newfs_cmd = shlex.split(line)
            opt_value = 'O:Ua:s:b:d:e:f:g:h:i:jk:m:o:L:'
            optlist, _args = getopt.getopt(newfs_cmd[1:], opt_value)
            for o, a in optlist:
                if o == "-s":
                    cur_fs_sz = int(a)
                if o == "-f":
                    frag_sz = int(a)
    # check the current partition size
    """
    # gpart show /dev/da0
=>      40  62914480  da0  GPT  (30G)
        40      1024    1  freebsd-boot  (512K)
      1064  58719232    2  freebsd-ufs  (28G)
  58720296   3145728    3  freebsd-swap  (1.5G)
  61866024   1048496       - free -  (512M)
    """
    expect_sz = None
    m = re.search('^(/dev/.+)p([0-9])$', devpth)
    gpart_res = _get_gpart_output(m.group(1))
    for line in gpart_res.splitlines():
        if re.search(r"freebsd-ufs", line):
            fields = line.split()
            expect_sz = int(fields[1])
    # Normalize the gpart sector size,
    # because the size is not exactly the same as fs size.
    normal_expect_sz = (expect_sz - expect_sz % (frag_sz / 512))
    if normal_expect_sz == cur_fs_sz:
        return True
    else:
        return False

# Do not use a dictionary as these commands should be able to be used
# for multiple filesystem types if possible, e.g. one command for
# ext2, ext3 and ext4.
RESIZE_FS_PREFIXES_CMDS = [
    ('btrfs', _resize_btrfs),
    ('ext', _resize_ext),
    ('xfs', _resize_xfs),
    ('ufs', _resize_ufs),
    ('zfs', _resize_zfs),
]

RESIZE_FS_PRECHECK_CMDS = {
    'ufs': _can_skip_resize_ufs
}

def can_skip_resize(fs_type, resize_what, devpth):
    fstype_lc = fs_type.lower()
    for i, func in RESIZE_FS_PRECHECK_CMDS.items():
        if fstype_lc.startswith(i):
            return func(resize_what, devpth)
    return False

def maybe_get_writable_device_path(devpath, info, log):
    """Return updated devpath if the devpath is a writable block device.

@param devpath: Requested path to the root device we want to resize.
    @param info: String representing information about the requested device.
    @param log: Logger to which logs will be added upon error.

@returns devpath or updated devpath per kernel commandline if the device
        path is a writable block device, returns None otherwise.
    """
    container = util.is_container()

# Ensure the path is a block device.
    if (devpath == "/dev/root" and not os.path.exists(devpath) and
            not container):
        devpath = util.rootdev_from_cmdline(util.get_cmdline())
        if devpath is None:
            log.warning("Unable to find device '/dev/root'")
            return None
        log.debug("Converted /dev/root to '%s' per kernel cmdline", devpath)

if devpath == 'overlayroot':
        log.debug("Not attempting to resize devpath '%s': %s", devpath, info)
        return None

# FreeBSD zpool can also just use gpt/<label>
    # with that in mind we can not do an os.stat on "gpt/whatever"
    # therefore return the devpath already here.
    if devpath.startswith('gpt/'):
        log.debug('We have a gpt label - just go ahead')
        return devpath
    # Alternatively, our device could simply be a name as returned by gpart,
    # such as da0p3
    if not devpath.startswith('/dev/') and not os.path.exists(devpath):
        fulldevpath = '/dev/' + devpath.lstrip('/')
        log.debug("'%s' doesn't appear to be a valid device path. Trying '%s'",
                  devpath, fulldevpath)
        devpath = fulldevpath

try:
        statret = os.stat(devpath)
    except OSError as exc:
        if container and exc.errno == errno.ENOENT:
            log.debug("Device '%s' did not exist in container. "
                      "cannot resize: %s", devpath, info)
        elif exc.errno == errno.ENOENT:
            log.warning("Device '%s' did not exist. cannot resize: %s",
                        devpath, info)
        else:
            raise exc
        return None

if not stat.S_ISBLK(statret.st_mode) and not stat.S_ISCHR(statret.st_mode):
        if container:
            log.debug("device '%s' not a block device in container."
                      " cannot resize: %s" % (devpath, info))
        else:
            log.warning("device '%s' not a block device. cannot resize: %s" %
                        (devpath, info))
        return None
    return devpath  # The writable block devpath

def handle(name, cfg, _cloud, log, args):
    if len(args) != 0:
        resize_root = args[0]
    else:
        resize_root = util.get_cfg_option_str(cfg, "resize_rootfs", True)
    validate_cloudconfig_schema(cfg, schema)
    if not util.translate_bool(resize_root, addons=[NOBLOCK]):
        log.debug("Skipping module named %s, resizing disabled", name)
        return

# TODO(harlowja): allow what is to be resized to be configurable??
    resize_what = "/"
    result = util.get_mount_info(resize_what, log)
    if not result:
        log.warning("Could not determine filesystem type of %s", resize_what)
        return

(devpth, fs_type, mount_point) = result

# if we have a zfs then our device path at this point
    # is the zfs label. For example: vmzroot/ROOT/freebsd
    # we will have to get the zpool name out of this
    # and set the resize_what variable to the zpool
    # so the _resize_zfs function gets the right attribute.
    if fs_type == 'zfs':
        zpool = devpth.split('/')[0]
        devpth = util.get_device_info_from_zpool(zpool)
        if not devpth:
            return  # could not find device from zpool
        resize_what = zpool

info = "dev=%s mnt_point=%s path=%s" % (devpth, mount_point, resize_what)
    log.debug("resize_info: %s" % info)

devpth = maybe_get_writable_device_path(devpth, info, log)
    if not devpth:
        return  # devpath was not a writable block device

resizer = None
    if can_skip_resize(fs_type, resize_what, devpth):
        log.debug("Skip resize filesystem type %s for %s",
                  fs_type, resize_what)
        return

fstype_lc = fs_type.lower()
    for (pfix, root_cmd) in RESIZE_FS_PREFIXES_CMDS:
        if fstype_lc.startswith(pfix):
            resizer = root_cmd
            break

if not resizer:
        log.warning("Not resizing unknown filesystem type %s for %s",
                    fs_type, resize_what)
        return

resize_cmd = resizer(resize_what, devpth)
    log.debug("Resizing %s (%s) using %s", resize_what, fs_type,
              ' '.join(resize_cmd))

if resize_root == NOBLOCK:
        # Fork to a child that will run
        # the resize command
        util.fork_cb(
            util.log_time, logfunc=log.debug, msg="backgrounded Resizing",
            func=do_resize, args=(resize_cmd, log))
    else:
        util.log_time(logfunc=log.debug, msg="Resizing",
                      func=do_resize, args=(resize_cmd, log))

action = 'Resized'
    if resize_root == NOBLOCK:
        action = 'Resizing (via forking)'
    log.debug("%s root filesystem (type=%s, val=%s)", action, fs_type,
              resize_root)

def do_resize(resize_cmd, log):
    try:
        util.subp(resize_cmd)
    except util.ProcessExecutionError:
        util.logexc(log, "Failed to resize filesystem (cmd=%s)", resize_cmd)
        raise
    # TODO(harlowja): Should we add a fsck check after this to make
    # sure we didn't corrupt anything?

# vi: ts=4 expandtab

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Editing: cc_resizefs.py

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