diff options
Diffstat (limited to 'cloudinit/config/cc_resizefs.py')
| -rw-r--r-- | cloudinit/config/cc_resizefs.py | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/cloudinit/config/cc_resizefs.py b/cloudinit/config/cc_resizefs.py index 95bc7a4e..be406034 100644 --- a/cloudinit/config/cc_resizefs.py +++ b/cloudinit/config/cc_resizefs.py @@ -56,6 +56,25 @@ RESIZE_FS_PREFIXES_CMDS = [ NOBLOCK = "noblock" +def rootdev_from_cmdline(cmdline): + found = None + for tok in cmdline.split(): + if tok.startswith("root="): + found = tok[5:] + break + if found is None: + return None + + if found.startswith("/dev/"): + return found + if found.startswith("LABEL="): + return "/dev/disk/by-label/" + found[len("LABEL="):] + if found.startswith("UUID="): + return "/dev/disk/by-uuid/" + found[len("UUID="):] + + return "/dev/" + found + + def handle(name, cfg, _cloud, log, args): if len(args) != 0: resize_root = args[0] @@ -83,10 +102,20 @@ def handle(name, cfg, _cloud, log, args): info = "dev=%s mnt_point=%s path=%s" % (devpth, mount_point, resize_what) log.debug("resize_info: %s" % info) + container = util.is_container() + + if (devpth == "/dev/root" and not os.path.exists(devpth) and + not container): + devpth = rootdev_from_cmdline(util.get_cmdline()) + if devpth is None: + log.warn("Unable to find device '/dev/root'") + return + log.debug("Converted /dev/root to '%s' per kernel cmdline", devpth) + try: statret = os.stat(devpth) except OSError as exc: - if util.is_container() and exc.errno == errno.ENOENT: + if container and exc.errno == errno.ENOENT: log.debug("Device '%s' did not exist in container. " "cannot resize: %s" % (devpth, info)) elif exc.errno == errno.ENOENT: @@ -97,7 +126,7 @@ def handle(name, cfg, _cloud, log, args): return if not stat.S_ISBLK(statret.st_mode) and not stat.S_ISCHR(statret.st_mode): - if util.is_container(): + if container: log.debug("device '%s' not a block device in container." " cannot resize: %s" % (devpth, info)) else: |