The problem is that a swapfile in btrfs cannot have CoW activated on the
file, and cannot be compressed. Also, you should not leave the file in
the root filesystem (even if it would work with the above settings)
because it will make snapshots of /@ messy.
If you manually do this, it will work:
-
I can confirm that with the proper Ubuntu 22.04 Beta on baremetal. I get
the error message on bootup. Is there a workaround?
(output of `swapon -s` is empty).
15:41:11 systemd-oomd: Swap is currently not detected; memory pressure usage
will be degraded
15:41:11 systemd: swap.target: Job
** Also affects: partman-swapfile (Ubuntu)
Importance: Undecided
Status: New
** Changed in: ubiquity (Ubuntu)
Status: Confirmed => Invalid
** Changed in: partman-swapfile (Ubuntu)
Status: New => Confirmed
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** No longer affects: ubuntu-mate
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Title:
The swapfile on the Btrfs file system is not activated
Status in linux package in
What do you actually mean by "xubuntu-22.04-core-amd64.iso"? Is it
official daily image?
** Tags added: jammy
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Title:
The swapfile
This bug still remains in the latest Xubuntu CORE 22.04
(xubuntu-22.04-core-amd64.iso from the end of Feb 2022). During boot
process, I can briefly see "[FAILED] Failed to activate swap /swapfile"
and "[DEPEND] Dependency failed for Swaps". When I execute "sudo dmesg |
grep -i swap", I get some
Latest Ubuntu MATE 21.10 20210812 - btrfs rootfs, swapfile is not
attached (output of `swapon -s` is empty).
** Also affects: ubuntu-mate
Importance: Undecided
Status: New
** Tags removed: disco
** Tags added: impish iso-testing
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubiquity (Ubuntu)
Status: New => Confirmed
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Thanks for your work.
Can you please open a merge request at [1]? Thanks!
[1]https://salsa.debian.org/installer-team/partman-swapfile
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Hello. I finally managed to work and locate the files and the code to change to
make the swapfile work on Btrfs, I have tested it on several installations for
a few months and the swapfile is created both if you choose ext4 or btrfs.
I'm not a developer, so I don't know if the changes are
Hello. I finally managed to work and locate the files and the code to change to
make the swapfile work on Btrfs, I have tested it on several installations for
a few months and the swapfile is created both if you choose ext4 or btrfs.
I'm not a developer, so I don't know if the changes are
Hello. I finally managed to work and locate the files and the code to change to
make the swapfile work on Btrfs, I have tested it on several installations for
a few months and the swapfile is created both if you choose ext4 or btrfs.
I'm not a developer, so I don't know if the changes are
Hello. I finally managed to work and locate the files and the code to change to
make the swapfile work on Btrfs, I have tested it on several installations for
a few months and the swapfile is created both if you choose ext4 or btrfs.
I'm not a developer, so I don't know if the changes are
I tried to make it work, doing a Ubuntu ISO chroot (I used Cubic
software), I saw the part where the Btrfs subvolts are created and tried
to modify them, obviously not having the skills in an advanced way, I'm
not managed to make it work.
I ran it manually after installation:
mount -t btrfs -o
Hello. Are there any news? Will it be correct for the 20.04 LTS release?
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Title:
The swapfile on the Btrfs file system is not
Now it works, swapfile will activate and work.
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Title:
The swapfile on the Btrfs file system is not activated
Status in linux
So the swapfile needs to be NOCOW before allocation [1]:
# truncate -s 0 /swapfile
# chattr +C /swapfile
# fallocate -l 512M /swapfile
We should make the installer use these steps instead.
[1] https://wiki.archlinux.org/index.php/Swap#Swap_file_creation
** Also affects: ubiquity (Ubuntu)
I don't know if it's useful, but I paste my "/etc/fstab" configuration
$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if
Unfortunately it doesn't help.
mar 29 12:01:18 notebook-Lenovo-V110 sudo[11977]:emanu : TTY=pts/1 ;
PWD=/home/emanu ; USER=root ; COMMAND=/usr/bin/chattr +C /swapfile
mar 29 12:02:20 notebook-Lenovo-V110 kernel: BTRFS warning (device sda1):
swapfile must not be copy-on-write
Does "sudo chattr +C /swapfile" help?
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Title:
The swapfile on the Btrfs file system is not activated
Status in linux package in
I forgot to mention that the swapfile was created during the
installation of Ubuntu 19.04, not selecting any swap partition, knowing
that the swapfile would be activated and that the support would be
shortly arrived for the swapfile, on the 5. * kernel
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