Get rid of lingering file found with `lsof +L1`

MYZ

5/5/24, 10:28 AM

Ubuntu 20.04.4 LTS

Hi, I had a large database file that filled up my disk space and I deleted it with rm big-file.

Then when I wanted to install something (the CLion backend via SSH) I got the prompt that the system had not enough disk space. df -h shows that I should have 69G free fisk space on my main disk. Running sudo lsof +L1 tells me, that the command pulseaudi is holding on to a huge file (around the 69G I am looking for...).

I tried killing puleaudio, it kept respawning. I then disabled the system service from respawning it, which gave me another suprising result. Running sudo lsof +L1 now displays:

COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF NLINK     NODE NAME
Xorg      1854  ipc   36u   REG    0,1        4     0     3081 /memfd:xshmfence (deleted)
Xorg      1854  ipc   48u   REG    0,1        4     0     1035 /memfd:xshmfence (deleted)
Xorg      1854  ipc   49u   REG    0,1        4     0     3084 /memfd:xshmfence (deleted)
Xorg      1854  ipc   50u   REG    0,1        4     0     1033 /memfd:xshmfence (deleted)
Xorg      1854  ipc   52u   REG    0,1        4     0       23 /memfd:xshmfence (deleted)
gnome-she 1984  ipc   26u   REG    0,1 67108864     0     2054 /memfd:pulseaudio (deleted)
gnome-she 1984  ipc   30r   REG    8,2     4392     0 10224924 /home/ipc/.local/share/gvfs-metadata/root (deleted)
gnome-she 1984  ipc   34r   REG    8,2    32768     0 10233760 /home/ipc/.local/share/gvfs-metadata/root-2847cede.log (deleted)
gnome-she 1984  ipc   42u   REG    0,1 67108864     0     2053 /memfd:pulseaudio (deleted)
gsd-media 2184  ipc   13u   REG    0,1 67108864     0     1037 /memfd:pulseaudio (deleted)
gnome-ter 2406  ipc   18u   REG    0,1 67108864     0       24 /memfd:pulseaudio (deleted)

So somehow now gnome holds the file? In its name I can still see the hint to pulseaudio.

I tried to truncate the file cia its file descriptor but looking at /proc/pid-number/fd I cannot find the FD in question (you can see here that the FD is not a simple number, there is the u suffix to it, I do not know what that means).

I have restarted the device multiple times and I also have tried booting with a Ubuntu USB stick and running fsck -f /dev/sda2. The command completed with no error messages or warnings. Can anyone help me with this?

105

0 + 2

partitioning

pulseaudio

disk

lsof

20.04

guiverc

5/5/24, 10:32 AM

I'll suggest checking you've applied all security fixes & patches if your details are correct; as Ubuntu 20.04 LTS upgraded to 20.04.5 some time ago (refer https://fridge.ubuntu.com/2022/09/01/ubuntu-20-04-5-lts-released/ for ISO release date, but installed systems upgraded prior to this), and a fully-upgraded system currently reports as 20.04.6 (not 20.04.4 as per your question)

MYZ

5/5/24, 11:22 AM

Hi. Thank you for the quick reply. I have upgraded the system, it is now on `Ubuntu 20.04.6 LTS`. But the described problem still exists.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Get rid of lingering file found with `lsof +L1`

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