virt-sanlock-cleanup: 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 CentOS possible default full paths are:

/usr/sbin/virt-sanlock-cleanup - from package: libvirt-lock-sanlock

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/virt-sanlock-cleanup - from package: libvirt-daemon

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

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