trip Posted April 13, 2020 Share Posted April 13, 2020 I installed Armbian Bionic Desktop 4.4 on the emmc module and I also have an SD card in. When I get to the desktop the card looks like it has been mounted by the current user (I'm new to Linux) - it was listed under /media/myuser with myuser as user and group -, so I changed /etc/fstab to have it mounted during system boot, by adding: /dev/mmcblk0p1 /mnt/sdcard This is what lsblk says: mmcblk1 179:0 0 14.7G 0 disk └─mmcblk1p1 179:1 0 14.5G 0 part / mmcblk1boot0 179:16 0 4M 1 disk mmcblk1boot1 179:32 0 4M 1 disk mmcblk1rpmb 179:48 0 4M 0 disk mmcblk0 179:64 0 29G 0 disk └─mmcblk0p1 179:65 0 29G 0 part /mnt/sdcard I noticed that the following gives an error: $ ls -l /mnt/sdcard/ drwxr-xr-x 5 root root 32768 Apr 12 20:22 kubernetes $ sudo mkdir /mnt/sdcard/test-dir drwxr-xr-x 5 root root 32768 Apr 12 20:22 kubernetes drwxr-xr-x 2 root root 32768 Apr 13 17:29 test-dir $ sudo chown myuser:myuser /mnt/sdcard/test-dir chown: changing ownership of '/mnt/sdcard/test-dir': Operation not permitted Is it expected? Or do I have to do anything else? I did this because I'm trying to deploy a PostgreSQL image in a Kubernetes cluster and I'm continuosly getting this same error, and after every configuration I found online didn't work, I wanted to try the command explicitly. Link to comment Share on other sites More sharing options...
Werner Posted April 13, 2020 Share Posted April 13, 2020 Is this dir immutable? Check lsattr Link to comment Share on other sites More sharing options...
martinayotte Posted April 13, 2020 Share Posted April 13, 2020 Is that SDCard is formatted EXT4, because if it is a FAT partition, you can't have multiple owners ... Link to comment Share on other sites More sharing options...
trip Posted April 13, 2020 Author Share Posted April 13, 2020 Oh s**t! I lost two days on this, thinking there was some configuration problem or incompatibility... I didn't think about the SD card file system. Thank you. Link to comment Share on other sites More sharing options...
trip Posted April 13, 2020 Author Share Posted April 13, 2020 4 hours ago, Werner said: Is this dir immutable? Check lsattr It said lsattr: Inappropriate ioctl for device While reading flags but it was due to the FAT file system; now that I formatted it to Ext4, it gives: --------------e--- /mnt/sdcard/kube-postgres Link to comment Share on other sites More sharing options...
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