hscan: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/lib/ganeti/2.12/usr/bin/hscan - from package: ganeti-htools-2.12
/usr/bin/hscan - from package: ganeti-htools
/usr/bin/hscan - from package: ganeti

You may install the required package with command apt-get install {package}

Error in other languages:
hscan: bevel nie gevind nie
hscan: comandă negăsită
hscan: comando não encontrado
hscan: commande introuvable
hscan: command not found
hscan: käsku ei ole
hscan: không tìm thấy lệnh
hscan: komanda nerasta
hscan: Kommando nicht gefunden.
hscan: kommandot finns inte
hscan: komut yok
hscan: nie znaleziono polecenia
hscan: níor aimsíodh an t-ordú
hscan: no se encontró la orden
hscan: no s'ha trobat l'ordre
hscan: opdracht niet gevonden
hscan: parancs nem található
hscan: perintah tidak ditemukan
hscan: príkaz nenájdený
hscan: příkaz nenalezen
hscan: команда не найдена
hscan: командата не е открита
hscan: 命令找不到
hscan: コマンドが見つかりません