It is possible to create swapfile on a multi-device filesystem but it's
not reliable. The check that verifies that in kernel:
10698 } else if (device != map->stripes[0].dev) {
10699 btrfs_warn(fs_info, "swapfile must be on one device");
10700 ret = -EINVAL;
10701 goto out;
10702 }
This does not count devices but rather the actual placement of the
swapfile extents, so multi-device filesystem with single profile can
create it as long as there's enough space and the allocator decides to
place it properly.
[ci skip]
Pull-request: #839
Signed-off-by: David Sterba <dsterba@suse.com>
- use :file: and :command:
- simplify manual page references
- add more web links
- typo fixes
- more cross-references
Signed-off-by: David Sterba <dsterba@suse.com>
Clarify active vs. inactive swapfile regarding snapshotting and further minor
improvements.
Issue: #608
Pull-request: #618
Signed-off-by: Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>
Signed-off-by: David Sterba <dsterba@suse.com>
The fact that the +C attribute excludes compression is mentioned in
<https://btrfs.readthedocs.io/en/latest/ch-compression.html#compatibility>.
Also mention it at the swapfile for clarity.
Pull-request: #530
Author: Nikolaos Chatzikonstantinou <nchatz314@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
swapon fails with an unclear error message, add some hints were to look
for more information.
Author: Torstein Eide
Pull-request: #491
Signed-off-by: David Sterba <dsterba@suse.com>
