lvremove: 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/lvremove - from package: lvm2

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

On Debian possible default full paths are:

/sbin/lvremove - from package: lvm2

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

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