[Bug 1864708] [NEW] Mount unit fails but systemctl status shows success

Johann Haarhoff 1864708 at bugs.launchpad.net
Tue Feb 25 20:44:19 UTC 2020 

Public bug reported:

I have this mount unit

# cat /etc/systemd/system/srv-cctvstore.mount 
[Unit]
Description=Drive for CCTVstore

[Mount]
What=/dev/disk/by-id/ata-ST2000NM0011_Z1P21NQ7-part1
Where=/srv/cctvstore
Type=ext4
Options=defaults

[Install]
WantedBy=multi-user.target

On boot systemd thinks it is mounted:

$ systemctl status srv-cctvstore.mount
● srv-cctvstore.mount - Drive for CCTVstore
   Loaded: loaded (/etc/systemd/system/srv-cctvstore.mount; enabled; vendor preset: enabled)
   Active: active (mounted) since Tue 2020-02-25 22:37:16 SAST; 48s ago
    Where: /srv/cctvstore
     What: /dev/sda1
  Process: 1294 ExecMount=/bin/mount /dev/disk/by-id/ata-ST2000NM0011_Z1P21NQ7-part1 /srv/cctvstore -t ext4 -o defaults (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 4915)
   CGroup: /system.slice/srv-cctvstore.mount

Feb 25 22:37:16 kluis systemd[1]: Mounting Drive for CCTVstore...
Feb 25 22:37:16 kluis systemd[1]: Mounted Drive for CCTVstore.

and the mount command seems to agree

$ mount | grep cctv
/dev/sda1 on /srv/cctvstore type ext4 (rw,relatime)

but the mountpoint is empty:

$ ls -al /srv/cctvstore/
total 1
drwxr-xr-x 2 root root 2 Dec  7 22:51 .
drwxr-xr-x 4 root root 4 Dec  7 22:51 ..

and umount thinks it is not mounted:

$ sudo umount /srv/cctvstore 
[sudo] password for johann: 
umount: /srv/cctvstore: not mounted.

journalctl doesn't report any funnies:

$ journalctl -u srv-cctvstore.mount
-- Logs begin at Tue 2020-02-25 22:37:16 SAST, end at Tue 2020-02-25 22:41:43 SAST. --
Feb 25 22:37:16 kluis systemd[1]: Mounting Drive for CCTVstore...
Feb 25 22:37:16 kluis systemd[1]: Mounted Drive for CCTVstore.

but mounting by hand works:

$ sudo mount /dev/sda1 /srv/cctvstore
johann at kluis:~$ ls -al /srv/cctvstore
total 3157
drwxrwxrwx  7 root   root      4096 Dec  9 22:27 .
drwxr-xr-x  4 root   root         4 Dec  7 22:51 ..
drwxr-xr-x 14 165569 165569    4096 Dec 10 23:10 events
drwxr-xr-x  2 165569 165569    4096 Dec  7 22:59 images
drwxr-xr-x  2 165569 165569    4096 Dec  7 23:01 logs
drwx------  2 root   root     16384 Dec  7 22:47 lost+found
drwxrwxr-x  2 165569 165569 3194880 Feb 25 22:25 mlevents

I am unsure where to go next, any help appreciated.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: systemd 237-3ubuntu10.39
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
Date: Tue Feb 25 22:27:59 2020
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/ROOT/ubuntu@/boot/vmlinuz-5.3.0-40-generic root=ZFS=rpool/ROOT/ubuntu ro
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/07/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P2.50
dmi.board.name: E3C232D2I
dmi.board.vendor: ASRockRack
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.50:bd03/07/2018:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRockRack:rnE3C232D2I:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
modified.conffile..etc.systemd.resolved.conf: [modified]
mtime.conffile..etc.systemd.resolved.conf: 2020-01-08T12:29:15.304369

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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https://bugs.launchpad.net/bugs/1864708

Title:
  Mount unit fails but systemctl status shows success

Status in systemd package in Ubuntu:
  New

Bug description:
  I have this mount unit

  # cat /etc/systemd/system/srv-cctvstore.mount 
  [Unit]
  Description=Drive for CCTVstore

  [Mount]
  What=/dev/disk/by-id/ata-ST2000NM0011_Z1P21NQ7-part1
  Where=/srv/cctvstore
  Type=ext4
  Options=defaults

  [Install]
  WantedBy=multi-user.target

  On boot systemd thinks it is mounted:

  $ systemctl status srv-cctvstore.mount
  ● srv-cctvstore.mount - Drive for CCTVstore
     Loaded: loaded (/etc/systemd/system/srv-cctvstore.mount; enabled; vendor preset: enabled)
     Active: active (mounted) since Tue 2020-02-25 22:37:16 SAST; 48s ago
      Where: /srv/cctvstore
       What: /dev/sda1
    Process: 1294 ExecMount=/bin/mount /dev/disk/by-id/ata-ST2000NM0011_Z1P21NQ7-part1 /srv/cctvstore -t ext4 -o defaults (code=exited, status=0/SUCCESS)
      Tasks: 0 (limit: 4915)
     CGroup: /system.slice/srv-cctvstore.mount

  Feb 25 22:37:16 kluis systemd[1]: Mounting Drive for CCTVstore...
  Feb 25 22:37:16 kluis systemd[1]: Mounted Drive for CCTVstore.

  and the mount command seems to agree

  $ mount | grep cctv
  /dev/sda1 on /srv/cctvstore type ext4 (rw,relatime)

  but the mountpoint is empty:

  $ ls -al /srv/cctvstore/
  total 1
  drwxr-xr-x 2 root root 2 Dec  7 22:51 .
  drwxr-xr-x 4 root root 4 Dec  7 22:51 ..

  and umount thinks it is not mounted:

  $ sudo umount /srv/cctvstore 
  [sudo] password for johann: 
  umount: /srv/cctvstore: not mounted.

  journalctl doesn't report any funnies:

  $ journalctl -u srv-cctvstore.mount
  -- Logs begin at Tue 2020-02-25 22:37:16 SAST, end at Tue 2020-02-25 22:41:43 SAST. --
  Feb 25 22:37:16 kluis systemd[1]: Mounting Drive for CCTVstore...
  Feb 25 22:37:16 kluis systemd[1]: Mounted Drive for CCTVstore.

  but mounting by hand works:

  $ sudo mount /dev/sda1 /srv/cctvstore
  johann at kluis:~$ ls -al /srv/cctvstore
  total 3157
  drwxrwxrwx  7 root   root      4096 Dec  9 22:27 .
  drwxr-xr-x  4 root   root         4 Dec  7 22:51 ..
  drwxr-xr-x 14 165569 165569    4096 Dec 10 23:10 events
  drwxr-xr-x  2 165569 165569    4096 Dec  7 22:59 images
  drwxr-xr-x  2 165569 165569    4096 Dec  7 23:01 logs
  drwx------  2 root   root     16384 Dec  7 22:47 lost+found
  drwxrwxr-x  2 165569 165569 3194880 Feb 25 22:25 mlevents

  I am unsure where to go next, any help appreciated.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: systemd 237-3ubuntu10.39
  ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
  Uname: Linux 5.3.0-40-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.11
  Architecture: amd64
  Date: Tue Feb 25 22:27:59 2020
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/ROOT/ubuntu@/boot/vmlinuz-5.3.0-40-generic root=ZFS=rpool/ROOT/ubuntu ro
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/07/2018
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P2.50
  dmi.board.name: E3C232D2I
  dmi.board.vendor: ASRockRack
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.50:bd03/07/2018:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRockRack:rnE3C232D2I:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To Be Filled By O.E.M.
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.sku: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  modified.conffile..etc.systemd.resolved.conf: [modified]
  mtime.conffile..etc.systemd.resolved.conf: 2020-01-08T12:29:15.304369

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