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I want to union some folder, current I use mergerfs, I try to test aufs.

When I mount aufs, it jump a error.

$sudo mount -t aufs -o br=./a:./b none ./c
mount: /home/t/c: wrong fs type, bad option, bad superblock on none, missing codepage or helper program, or other error.

I have install aufs-dev aufs-dkms aufs-tools, and I can found it in filesystems and lsmod.

$grep aufs /proc/filesystems
nodev   aufs

$ lsmod | grep aufs
aufs                  274432  0

$uname -a
Linux lin 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u2 (2019-11-11) x86_64 GNU/Linux

$ apt list | grep aufs
aufs-dev/stable,stable,now 4.19+20190211-1 all [installed]
aufs-dkms/stable,stable,now 4.19+20190211-1 all [installed]
aufs-tools/stable,now 1:4.14+20190211-1 amd64 [installed]

Is there something config that I am missing?

  • sometimes dmesg gives additional information about the error (via kernel's messages) – A.B Jan 8 at 10:28
  • thanks for your suggestion. I found there have a error in syslog aufs au_xino_create:212:mount[76436]: xino doesn't support /tmp/.aufs.xino(xfs), I retest aufs on a ext4 storage, it work fine. – fcying Jan 9 at 5:24

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