fsadm: 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/fsadm - from package: lvm2

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

On Debian possible default full paths are:

/sbin/fsadm - from package: lvm2

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

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