Hi,
I wrote a python script to execute command in guest OS by pyvmomi 6.0. The main function I used is "GuestProcessManager.StartProgramInGuest" to talk with vmtools in guest OS to execute specific command. this script is working well with almost LVM related command such as lvdisplay, lvcreate ..., but got failed with command "mount" a existing LV to a mount point which is last step for us automating create new volume in guest OS(RHEL 7.2). I observed in /var/log/message, it always complain the volume already mounted in guest system, but actually I can't see this LV in guest by root. below is specific information about my script and steps
python script:
ps = vim.vm.guest.ProcessManager.ProgramSpec(programPath=vm_command, arguments=vm_param, envVariables=all_envs)
res = pm.StartProgramInGuest(vm, creds, ps)
programPath=/usr/bin/mount
vm_param=/dev/vgdata/jason1 /sutton3 (vgdata is a existing VG,and jason1 is a existing LV, the directory /sutton3 is point I want to mount)
Run script to mount volume in guest(actually vmtools to do execution), /var/log/message complaints like this:
Sep 17 19:46:03 vpc4219 vmtoolsd: mount: /dev/mapper/vgdata-jason1 is already mounted or /sutton3 busy
Sep 17 19:46:03 vpc4219 vmtoolsd: /dev/mapper/vgdata-jason1 is already mounted on /sutton3
Actually run command in guest by root, I didn't see this volume show up
[root@vpc4219 ~]# mount -l | grep sutton3
[root@vpc4219 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/rhel-root xfs 63G 14G 50G 22% /
devtmpfs devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs tmpfs 7.8G 88K 7.8G 1% /dev/shm
tmpfs tmpfs 7.8G 25M 7.8G 1% /run
tmpfs tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda1 xfs 497M 211M 287M 43% /boot
tmpfs tmpfs 1.6G 16K 1.6G 1% /run/user/42
tmpfs tmpfs 1.6G 0 1.6G 0% /run/user/0
Afterward, I manually run mount command in guest by root, rather than script. It is successful easily without any error/warning. the question is why vmtools always failed command and how to fix this issue? Does anybodyhelp on this? thanks in advance.
