From 0e2030ca7fe783ead06100c748f4714895461799 Mon Sep 17 00:00:00 2001 From: Steve Langasek Date: Tue, 28 Mar 2017 21:47:50 -0700 Subject: support resizing partition and rootfs on system booted without initramfs. When booted without an initramfs, the root device will be /dev/root, not a named device. There is partial support for this when resizing filesystems, but not for growing partitions, without which it doesn't do much good. Move the /dev/root resolution code to util.py and use it from cc_growpart.py. Also, booting without an initramfs only works with a root= argument that's either a kernel device name (which is unstable) or a partition UUID. Handle the case of root=PARTUUID=value, not just LABEL and UUID. LP: #1677376 --- cloudinit/config/cc_growpart.py | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'cloudinit/config/cc_growpart.py') diff --git a/cloudinit/config/cc_growpart.py b/cloudinit/config/cc_growpart.py index 832bb3fd..089693e8 100644 --- a/cloudinit/config/cc_growpart.py +++ b/cloudinit/config/cc_growpart.py @@ -247,7 +247,16 @@ def devent2dev(devent): result = util.get_mount_info(devent) if not result: raise ValueError("Could not determine device of '%s' % dev_ent") - return result[0] + dev = result[0] + + container = util.is_container() + + # Ensure the path is a block device. + if (dev == "/dev/root" and not os.path.exists(dev) and not container): + dev = util.rootdev_from_cmdline(util.get_cmdline()) + if dev is None: + raise ValueError("Unable to find device '/dev/root'") + return dev def resize_devices(resizer, devices): -- cgit v1.2.3