42624e5604
it is expected / understood that mknod would fail inside an lxc container. So, if thats the case, just log a debug message saying so.
83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2011 Canonical Ltd.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import cloudinit.util as util
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import subprocess
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import traceback
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import os
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import stat
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import tempfile
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def handle(name,cfg,cloud,log,args):
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if len(args) != 0:
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resize_root = False
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if str(value).lower() in [ 'true', '1', 'on', 'yes']:
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resize_root = True
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else:
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resize_root = util.get_cfg_option_bool(cfg,"resize_rootfs",True)
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if not resize_root: return
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# this really only uses the filename from mktemp, then we mknod into it
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(fd, devpth) = tempfile.mkstemp()
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os.unlink(devpth)
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os.close(fd)
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try:
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st_dev=os.stat("/").st_dev
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dev=os.makedev(os.major(st_dev),os.minor(st_dev))
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os.mknod(devpth, 0400 | stat.S_IFBLK, dev)
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except:
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if util.islxc():
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log.debug("inside lxc, ignoring mknod failure in resizefs")
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return
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log.warn("Failed to make device node to resize /")
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raise
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cmd = [ 'blkid', '-c', '/dev/null', '-sTYPE', '-ovalue', devpth ]
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try:
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(fstype,err) = util.subp(cmd)
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except subprocess.CalledProcessError as e:
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log.warn("Failed to get filesystem type of maj=%s, min=%s via: %s" %
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(os.major(st_dev), os.minor(st_dev), cmd))
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log.warn("output=%s\nerror=%s\n", e.output[0], e.output[1])
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os.unlink(devpth)
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raise
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log.debug("resizing root filesystem (type=%s, maj=%i, min=%i)" %
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(fstype.rstrip("\n"), os.major(st_dev), os.minor(st_dev)))
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if fstype.startswith("ext"):
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resize_cmd = [ 'resize2fs', devpth ]
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elif fstype == "xfs":
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resize_cmd = [ 'xfs_growfs', devpth ]
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else:
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os.unlink(devpth)
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log.debug("not resizing unknown filesystem %s" % fstype)
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return
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try:
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(out,err) = util.subp(resize_cmd)
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except subprocess.CalledProcessError as e:
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log.warn("Failed to resize filesystem (%s)" % resize_cmd)
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log.warn("output=%s\nerror=%s\n", e.output[0], e.output[1])
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os.unlink(devpth)
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raise
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os.unlink(devpth)
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return
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