Main Hard Drive space being taken up by a partition on a separate drive

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1

So I recently left windows and installed Manjaro. I have been a long time Linux user, but this is the first time I’ve been running it (besides MacOS) on my main desktop. I have run into a little bit of an issue that I can seam to be able to figure out.

I have 3 SSDs installed in my stems. The boot drive. A second drive a partition called Speed, and a third with a partition called Data.

I have both mapped to directories in my home folder, Speed and Data. Data appears to be taking up space on my boot drive.

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lsblk:

NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 931.5G  0 disk 
└─sda1        8:1    0 931.5G  0 part /home/daq/Data
nvme0n1     259:0    0   1.8T  0 disk 
├─nvme0n1p1 259:1    0    16M  0 part 
└─nvme0n1p2 259:2    0   1.8T  0 part /home/daq/Speed
nvme1n1     259:3    0 465.8G  0 disk 
├─nvme1n1p1 259:4    0   300M  0 part /boot/efi
├─nvme1n1p2 259:5    0 431.1G  0 part /
└─nvme1n1p3 259:6    0  34.4G  0 part [SWAP]

df -Th:

Filesystem     Type      Size  Used Avail Use% Mounted on
dev            devtmpfs   16G     0   16G   0% /dev
run            tmpfs      16G  2.1M   16G   1% /run
efivarfs       efivarfs  128K   48K   76K  39% /sys/firmware/efi/efivars
/dev/nvme1n1p2 ext4      424G  340G   63G  85% /
tmpfs          tmpfs      16G  104M   16G   1% /dev/shm
tmpfs          tmpfs      16G  7.0M   16G   1% /tmp
/dev/nvme1n1p1 vfat      300M  296K  300M   1% /boot/efi
/dev/nvme0n1p2 fuseblk   1.9T  1.4T  490G  74% /home/daq/Speed
tmpfs          tmpfs     3.2G  104K  3.2G   1% /run/user/1000
/dev/sda1      btrfs     932G  251G  681G  27% /home/daq/Data

As far as I can tell. I have both Speed and data configured with the same flags. But Data shows as using space on /home/daq/Data, while speed does not.

Thanks for any help you can provide.

2

If you mount them on home they will and as you have no separate home not sure how you tell. Any way external drives should be mounted /run/media/“name”/data etc and then use symlink to place it in home.
Note
/run/media/ disappears after a turn off or restart so you must use fstab or a systemd service to use it.

4

I don’t have them mounted to /home/daq. I have them mounted to /home/daq/Speed & /home/daq/Data.

I know that drives are usually mounted in /rum/media, but I didn’t want to mount them there to make it easier to find the driver when finding the drives in a wine environment.

I just noticed that the original screen shot was showing the wrong data. I tired to updated the screenshot with the correct image but was unable.

5

Well Mine all appear in home as they are all symlinked and are controlled by systemd so never disappear.

6

But that doesn’t explain why I have one drive that the system thinks is taking up space in /home/daq. I don’t think changing the mount location will fix that.

7

I have no experience but have read that the “normal” tools are inaccurate when BTRFS is involved.

Can’t you unmount it to see how much on the drive is really used?

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8

When unmounted the space taken up by the drive goes away. I was wondering if the drive being formatted at BTRFS had anything to do with it.

9

Yes, it does. With btrfs, you have to use the btrfs commands, such as… :point_down:

btrfs filesystem df -h

See the man page… :point_down:

man btrfs-filesystem
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10

Only by some software and people who copy said software. AFAIK most still choose more sensible (permanent) mount points.

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