These mounted filesystems:
$ df /media/ray/d*
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop8 48128 48128 0 100% /media/ray/disk
/dev/loop3 64768 64768 0 100% /media/ray/disk1
$ ls -la /media/ray/d*
/media/ray/disk:
total 4
drwxr-xr-x 10 root root 119 Jun 15 09:43 .
drwxr-x---+ 5 root root 4096 Nov 24 12:29 ..
drwxr-xr-x 2 root root 53 Jun 15 09:43 bin
drwxr-xr-x 7 root root 110 Jun 15 09:43 etc
drwxr-xr-x 5 root root 66 Mar 28 2022 lib
drwxr-xr-x 2 root root 43 Jun 15 09:43 lib64
drwxr-xr-x 2 root root 32 Jun 15 09:43 meta
drwxr-xr-x 2 root root 58 Jun 15 09:43 snap
drwxr-xr-x 5 root root 62 Feb 17 2016 usr
drwxr-xr-x 5 root root 51 Jun 15 09:43 var
/media/ray/disk1:
total 4
drwxr-xr-x 21 root root 336 Aug 26 02:46 .
drwxr-x---+ 5 root root 4096 Nov 24 12:29 ..
lrwxrwxrwx 1 root root 7 Aug 26 00:34 bin -> usr/bin
drwxr-xr-x 6 root root 70 Aug 26 02:46 boot
drwxr-xr-x 2 root root 68 Aug 26 02:46 dev
drwxr-xr-x 43 root root 1578 Aug 26 02:46 etc
drwxr-xr-x 2 root root 3 Apr 15 2020 home
drwxr-xr-x 2 root root 3 Aug 26 02:46 host
lrwxrwxrwx 1 root root 7 Aug 26 00:34 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Aug 26 00:34 lib32 -> usr/lib32
lrwxrwxrwx 1 root root 9 Aug 26 00:34 lib64 -> usr/lib64
lrwxrwxrwx 1 root root 10 Aug 26 00:34 libx32 -> usr/libx32
drwxr-xr-x 2 root root 3 Aug 26 00:34 media
drwxr-xr-x 2 root root 32 Aug 26 02:46 meta
drwxr-xr-x 2 root root 3 Aug 26 00:34 mnt
drwxr-xr-x 2 root root 3 Aug 26 00:34 opt
drwxr-xr-x 2 root root 3 Apr 15 2020 proc
drwx------ 2 root root 46 Aug 26 02:46 root
drwxr-xr-x 8 root root 124 Aug 26 02:46 run
lrwxrwxrwx 1 root root 8 Aug 26 00:34 sbin -> usr/sbin
drwxr-xr-x 2 root root 58 Aug 26 02:46 snap
drwxr-xr-x 2 root root 3 Aug 26 00:34 srv
drwxr-xr-x 2 root root 3 Apr 15 2020 sys
drwxrwxrwt 2 root root 3 Aug 26 02:46 tmp
drwxr-xr-x 14 root root 205 Aug 26 02:46 usr
drwxr-xr-x 12 root root 159 Aug 26 02:46 var
drwxr-xr-x 2 root root 3 Aug 26 02:46 writable
seem to be used by snap:
$ sudo lsof /media/ray/disk
$ sudo lsof /media/ray/disk1
snap-stor 1099326 ray rtd DIR 7,3 336 11882 /
snap-stor 1099326 ray mem REG 7,3 6140 /usr/lib/x86_64-linux-gnu/libnss_dns-2.31.so (path dev=259,2, inode=21499031)
snap-stor 1099326 ray mem REG 7,3 6146 /usr/lib/x86_64-linux-gnu/libnss_mdns4_minimal.so.2 (path dev=259,2, inode=21506717)
…
The system is up-to-date Ubuntu 20.04.
My last three reboots were:
- 2022-04-04 20:57:06 -0400 Mon # Replace UPS battery
- 2022-05-21 18:47:01 -0400 Sat # 6-hour blackout
- 2022-09-04 09:35:24 -0400 Sun # 1-hour blackout
so both were created within the same continuous uptime period.
What are they and what happens if I unmount them?
