Adding a new drive to Silveblue and wanted permissions

Desktop Silverblue
#1

Hi, there. Need a bit help. I great new disk and GPT and then one ext4 partition. I make for pile of files what are sediment in our PC for update to an 33. Now I have disk nicely available but there is prompt for Superuser. I made following.

sudo chgrp adm /media/My_username/8d776c21-0684-4bf6-a733-8adb708765701
sudo chmod g+w /media/Again_my_username/8d776c21-0684-4bf6-a733-8adb708765701

It still asking password. How this is made in a Silverblue? I do not obviosly understand Superuser and user hierarchy in SB.

#2

Hello @juhafinlandvoaa,
Is this a removable disk? By that I mean is it a USB HDD?

#3

Nono, I have four disk in PC connected by SATA to MB.

#4

If you have the system setup already with BTRFS possibly this link is a good read for you https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices. If you are using EXT4+LVM then this article covers the idea sort of, its about adding space after running out the link is https://fedoramagazine.org/reclaim-hard-drive-space-with-lvm/.
Also, there is an article coming out monday on https://fedoramagazine.org/ that will be covering this very topic of adding a drive or drives to an LVM managed storage setup.

#5

BTRFS seems very interesting. I have EXT4 w/o LVM. i did have some time and was looking articles. In Disk utility you can set not to ask credentials in mount and to be mounted in boot. I cross out option and no difference. Asking still Superuser password for mounting. Is that bug?

#6

Yes, though it is a bug. In disk utility if I choose option to not ask ask credentials in mount it do not work in boot but if you unmount disk in utility then it goes to disk w/o authentication after a boot. Am I finding a bug? Can you help me with this Jack? And if it so how to get credits from that?

#7

All right then. if I want to copy all files to back up disk. How do you use DD? If I have drive dev/sdc and there sdc2 where all files are and want to create sdb. Is it then.

dd if=/dev/sdc2 of=/dev/sdb

If it so then if the partition is 249 GB and the destination 64 GB how DD will do it? I read that DD copy also empty space and not only files as you may think first place.

#8

Why use dd? why not use rsync? It’s more use friendly than dd, and dd can really cause some damage if you point it at the wrong locate.

#9

But this is application. I need only to copy home directory to an other disk in a PC. It is similar to Putty what i was using from laptop to overseas server of my own. So how you execute DD in a way that you go to bigger partition to an smaller volume partition, even that files what you know fits easily to destination drive.

#10

Rsync is made for making copies of your home dir (among other things). I wouldn’t use dd to do that. The partition size won’t matter to rsync, only the available space for what’s being copied.
Heres a link to a post about it https://fedoramagazine.org/copying-large-files-with-rsync-and-some-misconceptions/. While it is possible to use dd for such as backing up your entire home dir, it isn’t the recommended approach since dd is capable of such potential damage as a root user run program, it is very effective for low level work on the filesystem. That is why cp was created. And cp is why rsync was created.

#11

I was following home to another disk instructions as follows, but not that I have separate home directory. I think Btrfs is worth to look more close. I am ready now for a update.

#12

I would recommend a look at this https://www.redhat.com/sysadmin/rsync-synchronize-backup-restore, glad you have resolved it.

#13

Just to add to the conversation regarding adding storage to your system … This post was published on Fedora Magazine https://fedoramagazine.org/add-storage-to-your-fedora-system-with-lvm/. It may be worth a read.

#14

Thank You mate. Sure, it is worth to read.