Accessing LiveCD USB Device After Reboot

This is a procedure that only applies to the LiveCD USB device after the PIT node has been rebooted.

USB ONLY If the installation above was done from a Remote ISO.

After deploying the LiveCD’s NCN, the LiveCD USB itself is unharmed and available to an administrator.

Procedure

  1. Mount and view the USB device.

    ncn-m001# mkdir -pv /mnt/{cow,pitdata}
ncn-m001# mount -vL cow /mnt/cow
ncn-m001# mount -vL PITDATA /mnt/pitdata
ncn-m001# ls -ld /mnt/cow/rw/*

    Example output:

    drwxr-xr-x  2 root root 4096 Jan 28 15:47 /mnt/cow/rw/boot
drwxr-xr-x  8 root root 4096 Jan 29 07:25 /mnt/cow/rw/etc
drwxr-xr-x  3 root root 4096 Feb  5 04:02 /mnt/cow/rw/mnt
drwxr-xr-x  3 root root 4096 Jan 28 15:49 /mnt/cow/rw/opt
drwx------ 10 root root 4096 Feb  5 03:59 /mnt/cow/rw/root
drwxrwxrwt 13 root root 4096 Feb  5 04:03 /mnt/cow/rw/tmp
drwxr-xr-x  7 root root 4096 Jan 28 15:40 /mnt/cow/rw/usr
drwxr-xr-x  7 root root 4096 Jan 28 15:47 /mnt/cow/rw/var

  2. Look at the contents of /mnt/pitdata.

    ncn-m001# ls -ld /mnt/pitdata/*

    Example output:

    drwxr-xr-x  2 root root        4096 Feb  3 04:32 /mnt/pitdata/configs
drwxr-xr-x 14 root root        4096 Feb  3 07:26 /mnt/pitdata/csm-0.7.29
-rw-r--r--  1 root root 22159328586 Feb  2 22:18 /mnt/pitdata/csm-0.7.29.tar.gz
drwxr-xr-x  4 root root        4096 Feb  3 04:25 /mnt/pitdata/data
drwx------  2 root root       16384 Jan 28 15:41 /mnt/pitdata/lost+found
drwxr-xr-x  5 root root        4096 Feb  3 04:20 /mnt/pitdata/prep
drwxr-xr-x  2 root root        4096 Jan 28 16:07 /mnt/pitdata/static

  3. Unmount the USB device to avoid corruption.

    The corruption risk is low, but varies if large data use was done to or on the USB.

    ncn-m001# umount -v /mnt/cow /mnt/pitdata

  4. Remove the USB device after it has been unmounted.