Error about fstype

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J.y B

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Apr 29, 2025, 9:44:54 AMApr 29
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Hello everyone,
Long time i don't come here.

I have a problem i can't solve and i need help.
I add a need client (debian 12 like my director) and con't stop to have problem about "Top level directory "/home/data" has unlisted fstype "unknown" "

At first i had this problem : /home/data/dossiers is a different filesystem. Will not descend from /home/data/ into it.

It's the first time i see this error and try some things like add "OneFs = no" and other variables like "fs type = btrfs" but without succes.

Can you help me ?

My bareos director and clients are all at last version

Bruno Friedmann (bruno-at-bareos)

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Apr 29, 2025, 9:55:17 AMApr 29
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What mount /home/data return ?
is that a btrfs subvolume not explicitely mounted ?

As a workaround, you should be able to add "unknown" as fs type in the fileset.

FS Type = "unknown"

but would be nice to find the roots ...

J.y B

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Apr 29, 2025, 9:59:32 AMApr 29
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That funny because i already try this ^^

sdsdsd.png

Here you can see all FS present on my client :

ereerererre.png

Bruno Friedmann (bruno-at-bareos)

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Apr 29, 2025, 10:02:25 AMApr 29
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Beware, that doesn't answer if /home/data is a separated subvolume (which obviously is not mounted)
and 
Unknow is not Unknown ;-)

J.y B

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Apr 29, 2025, 10:10:56 AMApr 29
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good spot about Unknown (i'm bad in english ^^), but that don't solve my problem.

And about " that doesn't answer if /home/data is a separated subvolume", how i can check that?

Thank a lot by the way

Bruno Friedmann (bruno-at-bareos)

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Apr 30, 2025, 4:36:54 AMApr 30
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Did you tried to see them with 

btrfs subvolume list /

J.y B

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Apr 30, 2025, 7:37:25 AMApr 30
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done. the results:
sdsdsdfr.png

Bruno Friedmann (bruno-at-bareos)

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May 5, 2025, 3:40:31 AMMay 5
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So what you want to backup is a btrfs unmounted subvolume (/home/data/dossiers) compared to main mount point /home.
If you mount that subvolume, it will be backuped.

On my system /data is a subvolume of / 
and I have it declared like this in my /etc/fstab.

/dev/mapper/cr_nvme0n1p2  /data                   btrfs  subvol=@/data,nofail,noatime

If it is mounted it will be seen, and backup'ed.

J.y B

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Jul 8, 2025, 4:16:32 AMJul 8
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Sorry for the waiting, i stopped my job activity because heatlh care.


So, thank for the tip but i already mount that.
This server are in production for long time and the btrfs are mounted like this :


P.S: I don't have problem with the FS or access with this server, only bareos errors
{85D8C819-6989-496C-9582-BBDC2A30C235}.png

J.y B

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Jul 9, 2025, 7:40:55 AMJul 9
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Hi,
I don't found an solution so i use all the sub filders under /home/data and that work.

Best regards
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