forked from pool/cloud-init
21 lines
821 B
Diff
21 lines
821 B
Diff
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--- cloudinit/config/cc_resizefs.py
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+++ cloudinit/config/cc_resizefs.py 2017/11/27 11:55:37
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@@ -59,7 +59,16 @@
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def _resize_btrfs(mount_point, devpth):
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- return ('btrfs', 'filesystem', 'resize', 'max', mount_point)
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+# That btrfs utilities are using a path and not a device is bad,
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+# because the subvolume specified by '/' could be read-only
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+# and btrfs will wrongly fail. Correct fix would be to mount the
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+# real root of the filesystem (subvolid=5) and resize that. But
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+# using /.snapshots as workaround is Ok, too, since this is
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+# normally writeable.
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+ if mount_point == '/' and os.path.isdir("/.snapshots"):
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+ return ('btrfs', 'filesystem', 'resize', 'max', '/.snapshots')
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+ else:
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+ return ('btrfs', 'filesystem', 'resize', 'max', mount_point)
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def _resize_ext(mount_point, devpth):
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