[BUG] Disk not showing in some cases

[tomarus]

Describe the bug

I installed btop on 4 different servers, they have a slightly different disk layout. They all have a /data and a /zfs partition. On one of them /data is not showing in btop. Probably because the "filesystem" (zfs) has the same name as the other disks "mountpoint" (/zfs). This is just my wild random guess.

This is the problematic server's mountpoints:

$ findmnt -D
SOURCE                                      FSTYPE     SIZE   USED AVAIL USE% TARGET
zfs                                         zfs       14.1T   1.9T 12.1T  14% /data
tegile:/export/xxx/xxxxxxx-archive/xxx001 nfs4      18.1T 637.2G 17.5T   3% /zfs

The other servers have a different filesystem for /data and they seem to work ok.

SOURCE                                      FSTYPE     SIZE   USED AVAIL USE% TARGET
/dev/sda                                    xfs        5.2T   3.5T  1.7T  67% /data
tegile:/export/xxx/xxxxxxx-archive/xxx001 nfs4      18.1T 637.2G 17.5T   3% /zfs

Expected behavior

I expected /data to be present in the first screenshot :)

Info (please complete the following information):

• btop++ version: btop version: 1.2.13
• Binary: self compiled a couple of weeks or so ago from git
• Architecture: x86_64
• Platform: Linux. Debian 11/Bullseye
• (Linux) Kernel: 5.10.0-19-amd64

Additional context

contents of ~/.config/btop/btop.log:

2023/05/24 (20:23:49) | ===> btop++ v.1.2.13
2023/05/24 (20:23:49) | DEBUG: Starting in DEBUG mode!
2023/05/24 (20:23:49) | INFO: Logger set to DEBUG
2023/05/24 (20:23:49) | DEBUG: Using locale en_US.UTF-8
2023/05/24 (20:23:49) | INFO: Running on /dev/pts/0
2023/05/24 (20:23:52) | INFO: Quitting! Runtime: 00:00:03

[mattmartini]

I am having a similar issue whereby no disks show up on an Ubuntu 18.04.6 server (btop version 1.2.13). However swap does show up in the disk box.

I tried with no btop.conf file, with the disks I want specified with disks_filter in btop.conf, and with disks I don't want specified using exclude= with disks_filter in btop.conf.

Disks do show up (and are properly included or excluded via btop.conf) on Ubuntu 22.04 (btop version 1.2.3) and MacOS (btop version 1.2.13) machines.

Note: I am not using ZFS (ext4 on ubuntu and apfs and hfs on macos).

[TheMcSebi]

I've got the same issue, but in my case it's propably because it's running inside a lxc container.

[reukiodo]

Similarly, on btop v1.3.2 on OpenWrt, the root overlayfs cannot show up in btop:

root@U35WF:~# btop --version
btop version: 1.3.2
root@U35WF:~# lsblk -o +label,fstype,uuid
NAME      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
                                            LABEL      FSTYPE   UUID
sda         8:0    0 14.6T  0 disk /home    homebackup ext4     4b41b3ca-9e12-48cd-8d01-7cbdd88c1261
mtdblock0  31:0    0  192K  1 disk                              
mtdblock1  31:1    0   64K  1 disk                              
mtdblock2  31:2    0   64K  1 disk                              
mtdblock3  31:3    0 15.7M  0 disk                              
mtdblock4  31:4    0  2.2M  1 disk                              
mtdblock5  31:5    0 13.5M  1 disk /rom                squashfs 
mtdblock6  31:6    0  6.3M  0 disk /overlay                     
zram0     254:0    0  128M  0 disk [SWAP]              swap     
root@U35WF:~# mount
/dev/root on /rom type squashfs (ro,relatime,errors=continue)
proc on /proc type proc (rw,nosuid,nodev,noexec,noatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,noatime)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mtdblock6 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlay (rw,noatime,lowerdir=/,upperdir=/overlay/upper,workdir=/overlay/work)
tmpfs on /dev type tmpfs (rw,nosuid,noexec,noatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,noatime,mode=600,ptmxmode=000)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
bpffs on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,noatime,mode=700)
/dev/sda on /home type ext4 (rw,relatime)
root@U35WF:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 7.3M      7.3M         0 100% /rom
tmpfs                    59.7M      1.0M     58.7M   2% /tmp
/dev/mtdblock6            6.3M    388.0K      5.9M   6% /overlay
overlayfs:/overlay        6.3M    388.0K      5.9M   6% /
tmpfs                   512.0K         0    512.0K   0% /dev
/dev/sda                 14.4T      3.6T     10.1T  26% /home
root@U35WF:~# 

I've tried explicitly specifying both "/" and "/overlay" but neither will show it in the graph.

[reukiodo]

And yet on other systems (raspbian) I always have to "exclude=/proc" - a useless 0B mount - every time.