I had to do a fresh installation (ubuntu 22.04.2 server) of an old server. I forgot to save the mount settings :(
There are 4 drives, a OS drive (sdc) and 3 data drives: sda, sdb, and sdd that were previously in some sort of raid. How I remount them?
If I just run sudo mount /dev/sda /home/uname/d1, sudo mount /dev/sdb /home/uname/d2, and sudo mount /dev/sdd /home/uname/d3, it shows all 3 mount points connected to /dev/sda:
/dev/sda /home/unamd/d1 btrfs rw,relatime,space_cache,subvolid=5,subvol=/ 0 0
/dev/sda /home/uname/d2 btrfs rw,relatime,space_cache,subvolid=5,subvol=/ 0 0
/dev/sda /home/uname/d3 btrfs rw,relatime,space_cache,subvolid=5,subvol=/ 0 0
Why is that? Does that mean that all I need to do is mount sda and the raid protection is already there?
edit
findmnt
TARGET SOURCE FSTYPE OPTIONS
/ /dev/sdc2 ext4 rw,relatime
├─/sys sysfs sysfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/kernel/security securityfs securityfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/cgroup cgroup2 cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot
│ ├─/sys/fs/pstore pstore pstore rw,nosuid,nodev,noexec,relatime
│ ├─/sys/firmware/efi/efivars efivarfs efivarfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/bpf bpf bpf rw,nosuid,nodev,noexec,relatime,mode=700
│ ├─/sys/kernel/debug debugfs debugfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/kernel/tracing tracefs tracefs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/fuse/connections fusectl fusectl rw,nosuid,nodev,noexec,relatime
│ └─/sys/kernel/config configfs configfs rw,nosuid,nodev,noexec,relatime
├─/proc proc proc rw,nosuid,nodev,noexec,relatime
│ └─/proc/sys/fs/binfmt_misc systemd-1 autofs rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe
│ └─/proc/sys/fs/binfmt_misc binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime
├─/dev udev devtmpfs rw,nosuid,relatime,size=16308156k,nr_inodes=4077039,mode=755,inode64
│ ├─/dev/pts devpts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
│ ├─/dev/shm tmpfs tmpfs rw,nosuid,nodev,inode64
│ ├─/dev/hugepages hugetlbfs hugetlbfs rw,relatime,pagesize=2M
│ └─/dev/mqueue mqueue mqueue rw,nosuid,nodev,noexec,relatime
├─/run tmpfs tmpfs rw,nosuid,nodev,noexec,relatime,size=3273304k,mode=755,inode64
│ ├─/run/lock tmpfs tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k,inode64
│ ├─/run/credentials/systemd-sysusers.service
│ │ none ramfs ro,nosuid,nodev,noexec,relatime,mode=700
│ ├─/run/user/1000 tmpfs tmpfs rw,nosuid,nodev,relatime,size=3273300k,nr_inodes=818325,mode=700,uid
│ ├─/run/snapd/ns tmpfs[/snapd/ns] tmpfs rw,nosuid,nodev,noexec,relatime,size=3273304k,mode=755,inode64
│ │ └─/run/snapd/ns/lxd.mnt nsfs[mnt:[(snip)]]
│ │ nsfs rw
│ └─/run/docker/netns/(snip)nsfs[net:[(snip)]]
│ nsfs rw
├─/snap/core20/1822 /dev/loop0 squashfs ro,nodev,relatime,errors=continue
├─/snap/core20/1891 /dev/loop1 squashfs ro,nodev,relatime,errors=continue
├─/snap/lxd/24322 /dev/loop2 squashfs ro,nodev,relatime,errors=continue
├─/snap/snapd/18357 /dev/loop3 squashfs ro,nodev,relatime,errors=continue
├─/snap/snapd/19361 /dev/loop4 squashfs ro,nodev,relatime,errors=continue
├─/boot/efi /dev/sdc1 vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,s
├─/home/username/data /dev/sda btrfs rw,relatime,space_cache,subvolid=5,subvol=/
└─/var/lib/docker/overlay2/(snip)/merged
overlay overlay rw,relatime,lowerdir=/var/lib/docker/overlay2/l/(snip)
username@fileserver:~/data/music$
