Έχω dual boot σε έναν SSD Linux Mint 19.3 και Ubuntu 20.04. Παράλληλα έχω και έναν Μαγνητικό σκληρό 500G για να κάνω mount τα βαριά filesystems (/var & /home) με την χρήση bind mounts.
Στο ubuntu οι δίσκοι εμφανίζονται έτσι:
sudo lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 55M 1 loop /snap/core18/1880
loop1 7:1 0 255,6M 1 loop /snap/gnome-3-34-1804/36
loop2 7:2 0 29,9M 1 loop /snap/snapd/8542
loop3 7:3 0 62,1M 1 loop /snap/gtk-common-themes/1506
loop4 7:4 0 49,8M 1 loop /snap/snap-store/467
loop5 7:5 0 61M 1 loop /snap/core20/634
loop6 7:6 0 178,4M 1 loop /snap/telegram-desktop/2131
sda 8:0 0 111,8G 0 disk
├─sda1 8:1 0 55,9G 0 part /
└─sda2 8:2 0 55,9G 0 part
sdb 8:16 0 465,8G 0 disk
└─sdb1 8:17 0 465,8G 0 part /mnt/sdb1
Disk /dev/loop0: 54,98 MiB, 57626624 bytes, 112552 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 255,58 MiB, 267980800 bytes, 523400 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop2: 29,9 MiB, 31334400 bytes, 61200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop3: 62,9 MiB, 65105920 bytes, 127160 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop4: 49,8 MiB, 52203520 bytes, 101960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop5: 60,10 MiB, 63942656 bytes, 124888 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop6: 178,44 MiB, 187097088 bytes, 365424 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sda: 111,81 GiB, 120034123776 bytes, 234441648 sectors
Disk model: TEAMT2535T120G
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: AB7DBE79-5651-4BC1-AD83-A890CDE1389F
Device Start End Sectors Size Type
/dev/sda1 2048 117221375 117219328 55,9G Linux filesystem
/dev/sda2 117221376 234440703 117219328 55,9G Linux filesystem
Disk /dev/sdb: 465,78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: TOSHIBA DT01ACA0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x000332e6
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 976771071 976769024 465,8G 83 Linux
$ sudo blkid
/dev/sda1: UUID="7afca001-5c16-4f9d-b76c-36880c0c2bc4" TYPE="ext4" PARTUUID="b3907583-412a-4783-a456-3b9d506a961a"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/sda2: UUID="77a350da-4fa5-46be-9951-a4820d563245" TYPE="ext4" PARTUUID="61f7e1bb-bad8-4bc0-b926-dffaab85b966"
/dev/sdb1: UUID="419d21fa-f1e1-4bca-bbc7-fa71eb3882a1" TYPE="ext4" PARTUUID="000332e6-01"
Έτσι έκανα το ακόλουθο /etc/fstab
UUID=7afca001-5c16-4f9d-b76c-36880c0c2bc4 / ext4 errors=remount-ro 0 1
/swapfile none swap sw 0 0
/dev/sdb1 /mnt/sdb1 ext4 default 0 0
Και προπσαθώ να το κάνω mount:
sudo mount -a
Και λαμβάνω το σφάλμα:
mount: /mnt/sdb1: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error.
Αλλά εάν κάνω χεράτο mount πάιζει:
$ sudo mount /dev/sdb1 /mnt/sdb1
pcmagas@pcmagas-System-Product-Name:~$ ls -l /mnt/sdb1/
σύνολο 56
drwxr-xr-x 18 pcmagas pcmagas 4096 Μαΐ 21 10:53 data
drwxr-xr-x 7 pcmagas pcmagas 4096 Οκτ 14 14:35 job
drwx------ 2 root root 16384 Μαΐ 1 17:07 lost+found
drwxr-xr-x 4 root root 4096 Μαΐ 8 23:17 mint
drwxr-xr-x 3 root root 4096 Μαΐ 4 09:58 opt
drwxr-xr-x 30 pcmagas pcmagas 4096 Μαΐ 10 15:26 pc_magas
drwxr-xr-x 3 root root 4096 Οκτ 17 17:03 ubuntu
drwxr-xr-x 4 root root 4096 Μαΐ 4 20:11 usr
drwxrwxr-x 2 pcmagas pcmagas 4096 Μαΐ 8 22:47 vagrant
drwxr-xr-x 14 root root 4096 Μαΐ 1 17:45 var
drwxr-xr-x 3 pcmagas pcmagas 4096 Μαΐ 8 23:01 vms
Δηλαδή τι παίζει; Εάν είχε superblock issues δεν θα κόλαγε και στο χεράτο;
Ακόμη στο mint με παρόμοιο /etc/fstab γίνετε mount κανονικά:
UUID=77a350da-4fa5-46be-9951-a4820d563245 / ext4 errors=remount-ro 0 1
/swapfile none swap sw 0 0
UUID=419d21fa-f1e1-4bca-bbc7-fa71eb3882a1 /mnt ext4 defaults 0 0
/mnt/mint/pcmagas /home/pcmagas ext4 bind 0 0
/mnt/mint/var /var ext4 bind 0 0
Any ideas?