mirror of
https://github.com/libguestfs/libguestfs.git
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76 lines
2.5 KiB
Python
Executable File
76 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# libguestfs
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# Copyright (C) 2025 Red Hat Inc.
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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 as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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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, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Test btrfs subvolume list and btrfs subvolume default-id.
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import sys
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import os
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import guestfs
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# Allow the test to be skipped since btrfs is often broken.
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if 'SKIP_TEST_BTRFS_SUBVOLUME_DEFAULT_PY' in os.environ:
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sys.exit(77)
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g = guestfs.GuestFS()
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g.add_drive_scratch(1024 * 1024 * 1024)
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g.launch()
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# If btrfs is not available, bail.
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if not g.feature_available(["btrfs"]):
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print(f"{sys.argv[0]}: skipping test because btrfs is not available", file=sys.stderr)
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sys.exit(77)
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g.part_disk("/dev/sda", "mbr")
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g.mkfs_btrfs(["/dev/sda1"])
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g.mount("/dev/sda1", "/")
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g.btrfs_subvolume_create("/test1")
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g.mkdir("/test1/foo")
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g.btrfs_subvolume_create("/test2")
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vols = g.btrfs_subvolume_list("/")
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# Check the subvolume list, and extract the subvolume ID of path 'test1',
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# and the top level ID (which should be the same for both subvolumes).
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if len(vols) != 2:
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raise Exception("expected 2 subvolumes, but got {} instead".format(len(vols)))
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ids = {}
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top_level_id = None
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for vol in vols:
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path = vol['btrfssubvolume_path']
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id_ = vol['btrfssubvolume_id']
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top = vol['btrfssubvolume_top_level_id']
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if top_level_id is None:
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top_level_id = top
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elif top_level_id != top:
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raise Exception("top_level_id fields are not all the same")
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ids[path] = id_
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if 'test1' not in ids:
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raise Exception("no subvolume path 'test1' found")
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test1_id = ids['test1']
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g.btrfs_subvolume_set_default(test1_id, "/")
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g.umount("/")
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g.mount("/dev/sda1", "/")
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# This was originally /test1/foo, but now that we changed the
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# default ID to 'test1', /test1 is mounted as /, so:
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g.mkdir("/foo/bar")
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g.btrfs_subvolume_set_default(top_level_id, "/")
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g.umount("/")
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g.mount("/dev/sda1", "/")
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# Now we're back to the original default volume, so this should work:
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g.mkdir("/test1/foo/bar/baz")
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g.shutdown()
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g.close()
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