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View Code? Open in Web Editor NEWGet a nice tree-style view of your btrfs subvolumes/snapshots, including their size, a la 'zfs list'
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btrfs-list's Issues
Is it possible to add a path truncate option?
I have a path from docker: /var/lib/docker/btrfs/subvolumes/66281c586c95bc969e46ea749970d5d6f77a63a8c8fafec2580e5cc41486df34
That path is very large, because of that the table is not properly arranged in the terminal.
UUIDs not shown
UUIDs are not shown.
└> sudo btrfs filesystem show
Label: 'label' uuid: bd56f0a1-b50b-49a3-846b-f3f9b6fbe5a3
Total devices 1 FS bytes used 2.53TiB
devid 1 size 3.64TiB used 2.57TiB path /dev/sdc
versus
└> sudo ./btrfs-list -q -a
NAME ID PARENT TOPLVL GEN CGEN UUID PARENTUUID RCVD_UUID OTIME TYPE EXCL MOUNTPOINT
label - - - - - - - - - fs 2.53T (single/dup, 1.10T/3.64T free, 30.27%)
[main] 5 - - - - - - - - mainvol - /media/user/label
Truncated names of subvolumes and/or snapshots containing spaces
> btrfs-list --version
btrfs-list v2.2 using btrfs v5.4.1
Having a snapshot and a subvolume containing spaces in its name.
CAMERA_BACKUP/@2023-07-02 subvol -
CAMERA_BACKUP/.@2023-07-02 rosnap -
Original was something like CAMERA_BACKUP/.@2023-07-02 Some description
Insecure $ENV{ENV} while running with -T switch at /usr/share/perl5/IPC/Open3.pm line 281.
Doesn't work in Fedora 29:
Insecure $ENV{ENV} while running with -T switch at /usr/share/perl5/IPC/Open3.pm line 281.
After Restore of snapshot: No dependencies are shown
After I restored a snapshot the dependencies are not shown.
To reproduce the issue...
Generate a test volume and some snapshots
btrfs subvolume create test # Create new subvolume
btrfs subvolume snapshot test test-backup # Do a backup
btrfs subvolume snapshot test test-backup2 # Another backup
Show it with btrfs-list
btrfs-list /mnt/pro/ |grep -E 'NAME|single|test'
NAME TYPE REFER EXCL MOUNTPOINT
b04de56b fs - 374.04G (single, 546.00G free)
test subvol 16.00k 16.00k
test-backup snap 16.00k 16.00k
test-backup2 snap 16.00k 16.00k
If you now have to restore your test-backup2 you do
btrfs subvolume delete test
Delete subvolume (no-commit): '/mnt/pro/test'
btrfs subvolume snapshot test-backup2 test
Create a snapshot of 'test-backup2' in './test'
And after some days create a new backup
btrfs subvolume snapshot test test-backup-after-restore
Now btrfs-list didn't show dependencies ("test-backup-after-restore" should depend to "test")
btrfs-list /mnt/pro/ |grep -E 'NAME|single|test'
NAME TYPE REFER EXCL MOUNTPOINT
b04de56b fs - 374.04G (single, 546.00G free)
test-backup2 snap 16.00k 16.00k
test snap 16.00k 16.00k
test-backup snap 16.00k 16.00k
test-backup-after-restore snap 16.00k 16.00k
"test-backup-after-restore" is shown as snapshot with normal btrfs tool:
btrfs subvolume show test
test
Name: test
UUID: 8db29b7d-5331-7742-af40-92b65eb22884
Parent UUID: 57fadfee-483f-0b42-9229-c68bf12ddabc
Received UUID: -
Creation time: 2022-01-02 10:41:07 +0100
Subvolume ID: 474
Generation: 87841
Gen at creation: 87834
Parent ID: 5
Top level ID: 5
Flags: -
Send transid: 0
Send time: 2022-01-02 10:41:07 +0100
Receive transid: 0
Receive time: -
Snapshot(s):
test-backup-after-restore
Quota group: 0/474
Limit referenced: -
Limit exclusive: -
Usage referenced: 16.00KiB
Usage exclusive: 16.00KiB
Version info warning
When I run command
# ./btrfs-list
it prints warning message
WARNING: your kernel seems older (v4.13.x) than the btrfs-progs userspace tool (v4.4), some features might not be supported.
NAME ID TYPE REFER USED
backup - fs - 650.80M (5.45G free)
I wrote simple patch
diff --git a/btrfs-list b/btrfs-list
index 09b4100..900e191 100755
--- a/btrfs-list
+++ b/btrfs-list
@@ -1,6 +1,7 @@
#! /usr/bin/perl -T
use strict;
use warnings;
+use version;
use IPC::Open3;
use Symbol 'gensym';
use Getopt::Long;
@@ -123,7 +124,7 @@ if ($version lt '3.16')
@cmd = run_cmd( { can_fail => 0 }, qw{ uname -r } );
my ($kerver) = $cmd[1][0] =~ /^(\d+\.\d+)/;
my ($shortversion) = $version =~ /^(\d+\.\d+)/;
-if ($kerver lt $shortversion)
+if (version->declare($kerver)->numify lt version->declare($shortversion)->numify)
{
print STDERR "WARNING: your kernel seems older (v$kerver.x) than the btrfs-progs userspace tool (v$version), some features might not be supported.\n";
}alignment broken
indented snaps last 4 columns are not aligned correctly 2 spaces offset
NAME TYPE REFER EXCL MOUNTPOINT
dalivgdab9 fs - 4.87G (raid1, 818.28G/825.18G free, 99.16%)
[main] mainvol 16.00k 16.00k /vgd
adm subvol 32.00k 16.00k
snaps/adm-2023-02-11 rosnap 32.00k 16.00k
iso subvol 2.69G 16.00k
snaps/iso-2023-02-11 rosnap 2.69G 16.00k
jail/don subvol 2.29G 2.29G
snaps/jail-2023-02-11 rosnap 16.00k 16.00k
Automatically request root permissions
Could you add functionality to make the script automatically ask for root permissions when it is not run as root?
Because it requires it to function properly/at all...
- Fe. instead of the well-know
sudoyou could be usingpkexecwhich automatically generates Popup when run under a GUI?
(pkexecis the PolicyKit's version ofsudo) 😉
screenshots
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