Jumping into DMR

I have pulled the trigger on relatively cheap Retevis RT-8 DMR transciever with IP67 rating.

This is my first contact with DMR on the HAM radio frequencies 🙂

Even GPS works!

s55eb GPS location

Snapshot on LVM

Add disk.

Use the SCSI rediscovery trick if you can’t reboot the machine:

Check on which host the new drive is located:

# grep mpt /sys/class/scsi_host/host?/proc_name
/sys/class/scsi_host/host2/proc_name:mptspi


# echo "- - -" > /sys/class/scsi_host/host2/scan

http://www.golinuxhub.com/2014/07/how-to-detect-new-hard-disk-attached.html

 

# fdisk -l
# fdisk /dev/sdb

n

p

1

enter

enter

t

8e

w
# pvcreate /dev/sdb1
# vgextend VM_Name /dev/sdb1
# lvcreate -s -n snapshot -L 10G /dev/VM_Name/root
# mkdir /mnt/snapshot
# mount -o ro /dev/VM_Name/snapshot /mnt/snapshot

Do stuff if you screw up.

# umount /mnt/snapshot
# lvremove /dev/VM_Name/snapshot
# pvmove /dev/sdb1
# vgreduce VM_Name /dev/sdb1