Created attachment 151384 [details] Screenshot from available disk sensors SUMMARY *** Mounted LUKS encrypted btrfs subvolume cannot be seen in System monitor (e.g. Disk Usage 1.0 widget). # fdisk -l Disk /dev/sda: 238.47 GiB, 256060514304 bytes, 500118192 sectors Disk model: HFS256G39TND-N21 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: 1ADD023E-D453-CF4C-B74D-F3CE22089BB8 Device Start End Sectors Size Type /dev/sda1 2048 526335 524288 256M EFI System /dev/sda2 526336 500118158 499591823 238.2G Linux filesystem # cryptsetup open --allow-discards /dev/sda2 crypteddisk # Opening the crypted volume with passwd # cat /etc/fstab # mounting of subvolume /dev/mapper/crypteddisk / btrfs subvol=root,noatime,discard 0 0 sda1 and/or subvolume is missing from sensors under "Disks", see attached image. *** STEPS TO REPRODUCE 1. create luks encrypted disk with btrfs formating which has subvolumes 2. decrypt the disk with cryptsetup 3. mount a subvolume of btrfs partition somewhere (e.g. /) 4. try to monitor the mounted subvolume or the encrypted disk itself OBSERVED RESULT The disk or the subvolume cannot be seen in disk sensors. EXPECTED RESULT The disk or the subvolume usage, throughput, ... can be seen and measured in disk sensors. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Gentoo Linux 2.8 (available in About System) KDE Plasma Version: 5.25.4 KDE Frameworks Version: 5.97.0 Qt Version: 5.15.5 ADDITIONAL INFORMATION
We use Solid for determining which devices are listed. Can you paste the output of these two commands: solid-hardware5 query 'IS StorageAccess' and solid-hardware5 query 'IS StorageDevice'
(In reply to Arjen Hiemstra from comment #1) > We use Solid for determining which devices are listed. Can you paste the > output of these two commands: > > solid-hardware5 query 'IS StorageAccess' > > and > > solid-hardware5 query 'IS StorageDevice' Hello! Thank you for your reply. Here is the output of these commands: --8<-- # solid-hardware5 query 'IS StorageAccess' udi = '/org/freedesktop/UDisks2/block_devices/sdb1' udi = '/org/freedesktop/UDisks2/block_devices/sda2' udi = '/org/freedesktop/UDisks2/block_devices/sda1' # solid-hardware5 query 'IS StorageDevice' --8<-- The latter gave empty response. BR, -Risto
I see something quite similar on openSUSE Leap 15.6, plasma5-workspace-5.27.11-bp156.3.3.1.x86_64. The interesting thing is, I have two laptops (different hardware) installed identically, they just have different hard disks (SATA SSD vs. NVME), both have encrypted disks. On one device I see "0 Bytes used" as well as "0 Bytes total", while the other one (installed on SATA SSD) shows at least the boot partition (I assume because of the partition sizes), so something around 134 MB used out of 487 MB. /boot is ext4, there are a couple of btrfs subvolumes as well. The requested output (solid-hardware query) is similar to the already reported, "IS StorageDevice" is empty. Anything else I could provide to narrow this down?