* NORAML LOG
Apr 17 13:40:42 jin systemd[1]: Started Run anacron jobs.
Apr 17 13:40:42 jin anacron[2960]: Anacron 2.3 started on 2021-04-17
Apr 17 13:40:42 jin anacron[2960]: Normal exit (0 jobs run)
Apr 17 13:40:42 jin systemd[1]: anacron.service: Succeeded.
Apr 17 13:40:49 jin kernel: [  109.324001]  sdc: sdc1 sdc2
Apr 17 13:40:49 jin kernel: [  109.502578] EXT4-fs (sdc2): mounted filesystem with ordered data mode. Opts: (null)
Apr 17 13:41:12 jin systemd[1194]: Started VTE child process 3024 launched by gnome-terminal-server process 2166.
Apr 17 13:43:17 jin kernel: [  257.848770] systemback (2406): drop_caches: 3
Apr 17 13:43:17 jin systemd[1194]: \x2esblivesystemwrite-sblive.mount: Succeeded.
Apr 17 13:43:17 jin systemd[1]: \x2esblivesystemwrite-sblive.mount: Succeeded.
Apr 17 13:43:18 jin systemd[1]: \x2esblivesystemwrite-sbroot.mount: Succeeded.
Apr 17 13:43:18 jin systemd[1194]: \x2esblivesystemwrite-sbroot.mount: Succeeded.


* ERROR LOG
Apr 17 13:15:25 hamonikr-jin multipath: sdc: can't store path info
Apr 17 13:15:25 hamonikr-jin multipathd[930]: sdc: spurious uevent, path not found
Apr 17 13:15:25 hamonikr-jin multipathd[930]: uevent trigger error
Apr 17 13:15:26 hamonikr-jin kernel: [ 2881.142777]  sdc: sdc1 sdc2
Apr 17 13:15:26 hamonikr-jin multipath: sdc: can't store path info
Apr 17 13:15:26 hamonikr-jin multipathd[930]: sdc: spurious uevent, path not found
Apr 17 13:15:26 hamonikr-jin multipathd[930]: uevent trigger error
Apr 17 13:15:26 hamonikr-jin kernel: [ 2881.310358] EXT4-fs (sdc2): mounted filesystem with ordered data mode. Opts: (null)
Apr 17 13:15:26 hamonikr-jin systemd[2517]: \x2esblivesystemwrite-sblive.mount: Succeeded.
Apr 17 13:15:26 hamonikr-jin systemd[1]: \x2esblivesystemwrite-sblive.mount: Succeeded.
Apr 17 13:15:30 hamonikr-jin systemd[1]: \x2esblivesystemwrite-sbroot.mount: Succeeded.
Apr 17 13:15:30 hamonikr-jin systemd[2517]: \x2esblivesystemwrite-sbroot.mount: Succeeded.

--
https://access.redhat.com/solutions/2651581
$ ll /dev/disk/by-id/ | grep sdc
lrwxrwxrwx 1 root root   9  4월 17 13:15 usb-Specific_STORAGE_DEVICE_76254190-0:0 -> ../../sdc
lrwxrwxrwx 1 root root  10  4월 17 13:15 usb-Specific_STORAGE_DEVICE_76254190-0:0-part1 -> ../../sdc1
lrwxrwxrwx 1 root root  10  4월 17 13:15 usb-Specific_STORAGE_DEVICE_76254190-0:0-part2 -> ../../sdc2


# cat /etc/multipath.conf
defaults {
    user_friendly_names yes
}
blacklist {
    wwid Specific_STORAGE_DEVICE_76254190
}

OR

# cat /etc/multipath.conf
defaults {
    user_friendly_names yes
}
blacklist {
  devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
  devnode "^(hd|xvd|vd)[a-z]*"
  devnode "ofsctl"
  devnode "^asm/*" 
}
-------

# ll /dev/disk/by-id/ | grep sda
lrwxrwxrwx 1 root root  9 Sep  9 14:47 scsi-3600508b1001c75ccf265ebc995aab8f4 -> ../../sda

> TRY #1
sudo systemctl stop  multipath-tools.service

sudo apt purge multipath-tools

--
쓰는 도중에 확인한 마운트 정보

hamonikr@hamonikr-jin:/.sblivesystemwrite$ cat /etc/mtab 

/dev/sdc1 /.sblivesystemwrite/sblive vfat rw,noatime,fmask=0000,dmask=0000,allow_utime=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 0 0
/dev/sdc2 /.sblivesystemwrite/sbroot ext4 rw,noatime 0 0