lvmsar: 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:

/sbin/lvmsar - from package: lvm2

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

On Debian possible default full paths are:

/sbin/lvmsar - from package: lvm2

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

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