> On 2020-08-17 16:42, hobie of RMN wrote:
>> Hi, All -
>>
>> My brother has been issuing "mount /dev/sdb1" prior to backing up some
>> files to a second hard disk. He lately upgraded to 'testing', and it
>> appears (from result of running df) that what the system now calls
>> /dev/sdb1 is what he has thought of as /dev/sda1, the system '/'
>> partition.
>>
>> Thanks to the UUID= mechanism, his system still boots properly, but
>> 'mount
>> /dev/sdb1' is inappropriate now, could even be the path to madness. :)
>>
>> Two questions, then: (1) What caused this shift of device naming? And
>> (2)
>> How do we fix it? Is this something that can be changed in the BIOS?
>> But, if so, what caused it to change in the first place?
>>
>> Thanks for your time and attenton.
>
> Please run the following commands as root and post the complete console
> session -- prompt, command issued, and output obtained:
>
> # cat /etc/fstab
>
> # mount
>
>
> Please post the complete console session demonstrating the issue with
> mount(8).
>
>
> David
>
Thaks. :)
cat /etc/fstab output includes:
# / was on /dev/sda1 during installation
UUID=3f50ca38-20f3-4a12-880c-a1283ac6e41b / ext4
errors=remount-ro 0
'mount' output includes:
/dev/sdb1 on / type ext4 (rw,relatime,errors=remount-ro)
Here's the full output:
root@shelby:~# cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda1 during installation
UUID=3f50ca38-20f3-4a12-880c-a1283ac6e41b / ext4
errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=ca191c62-2f38-4eae-b4e9-e21337edc198 none swap sw
0 0
/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/sr1 /media/cdrom1 udf,iso9660 user,noauto 0 0
root@shelby:~#
root@shelby:~# mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs
(rw,nosuid,noexec,relatime,size=4023876k,nr_inodes=1005969,mode=755)
devpts on /dev/pts type devpts
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs
(rw,nosuid,nodev,noexec,relatime,size=814860k,mode=755)
/dev/sdb1 on / type ext4 (rw,relatime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs
(rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2
(rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup
(rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/pids type cgroup
(rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/perf_event type cgroup
(rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/blkio type cgroup
(rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup
(rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/devices type cgroup
(rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup
(rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/rdma type cgroup
(rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup
(rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup
(rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/cpuset type cgroup
(rw,nosuid,nodev,noexec,relatime,cpuset)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs
(rw,relatime,fd=33,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=3406)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
vmware-vmblock on /run/vmblock-fuse type fuse.vmware-vmblock
(rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other)
tmpfs on /run/user/0 type tmpfs
(rw,nosuid,nodev,relatime,size=814860k,mode=700)
tmpfs on /run/user/1000 type tmpfs
(rw,nosuid,nodev,relatime,size=814860k,mode=700,uid=1000,gid=1000)
