[SOLVED] Removing physical HDD from spanned Fedora installation

IlyaZ · 03-19-2022, 01:33 PM

Hey,

I installed Fedora 35 on an ancient computer some time ago. I have 4 drives:

sda 1TB
sdc 200GB
sdd 500GB
sde 120GB

All LUKS, mbr

On setup I installed Fedora on sdc, sdd, sde which are bundled into one label. I kept sda separate for data.

Recently I added sdb 1.5 TB, to a makeshift internal slot. I want to get rid of sde 120 GB (which is mostly is unused space anyway) to put sdb into its slot, and to reduce power consumption.

I don't know if the sdc-sdd-sde span counts as a virtual disk, but somehow I want to exclude sde from that constellation.

- Is there any way to shrink whatever sdc-sdd-sde is to sdc-sdd (there's plenty of space).
- Do I have to clone sdc-sdd-sde (how?) onto sdb (modify fstab, luks- how?), then dismantle the sdc-sdd-sde axis and boot from sdb instead?

syg00 · 03-19-2022, 09:35 PM

For some-one that has been a member that long, this qualifies as "waving hands in the air". There is zero useful info in that post.

Post all the following - in [code] tabs.

Code:

lsblk -f
cat /etc/fstab

IlyaZ · 03-20-2022, 02:41 AM

Right, here you go:

Code:

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  
  └─luks-7a05f548-611c-4818-a164-3aa9e0b27435
                     253:3    0 931.5G  0 crypt /run/media/i/HD103SI
sdb                    8:16   0   1.4T  0 disk  
└─sdb1                 8:17   0   1.4T  0 part  
  └─luks-4c2975ff-d866-4b5d-9416-4b1e0743cc62
                     253:4    0   1.4T  0 crypt /run/media/i/HD154UI Old Serv
sdc                    8:32   0 186.3G  0 disk  
├─sdc1                 8:33   0     1G  0 part  /boot
└─sdc2                 8:34   0 185.3G  0 part  
  └─luks-b1eebcdb-09e2-4d38-a06b-23f9bab7444d
                     253:1    0 185.3G  0 crypt /var/lib/docker/btrfs
                                                /home
                                                /
sdd                    8:48   0 465.8G  0 disk  
└─sdd1                 8:49   0 465.8G  0 part  
  └─luks-410a561f-6027-4149-82e5-0daf4c17c344
                     253:2    0 465.7G  0 crypt 
sde                    8:64   0 111.8G  0 disk  
└─sde1                 8:65   0 111.8G  0 part  
  └─luks-099eba10-c94f-439d-bf8e-3d974507fdd0
                     253:0    0 111.8G  0 crypt 
sdf                    8:80   0 931.5G  0 disk  
└─sdf1                 8:81   0 931.5G  0 part  
  └─luks-4d03511e-085b-4099-8eba-a94105890323
                     253:5    0 931.5G  0 crypt /run/media/i/Portable
zram0                252:0    0   7.8G  0 disk  [SWAP]

Code:

UUID=663c7570-31bb-48e3-a1ff-781f69b267f4 /                       btrfs   subvol=root,compress=zstd:1,x-systemd.device-timeout=0 0 0
UUID=9ab39b47-17dd-4c3f-94b0-c28d5e23edc8 /boot                   ext4    defaults        1 2
UUID=663c7570-31bb-48e3-a1ff-781f69b267f4 /home                   btrfs   subvol=home,compress=zstd:1,x-systemd.device-timeout=0 0 0

syg00 · 03-21-2022, 05:57 AM

Been a while since I did a full Fedora install. Forgot about them using btrfs now - go to the wiki and get the multi-device page here. If you have enough spare space on the other devices, removing a disk is pretty simple.

IlyaZ · 03-21-2022, 01:12 PM

Wonderful, that was exactly what I was looking for. It made sense to let fedora bundle many small HDDs at the time, but didn't know about btrfs.