Problem stopping array - Retry unmounting user share(s)

[IG82]

This has occurred before but I have grown impatient and forced it to shut-down by holding the power button.

 

I am running 5.0.6 on a Microserver, no plugins or anything special with the exception of Unmenu. 

 

After trying to stop the array it gets stuck at 'Retry unmounting user share(s)'.  Attached is my syslog.  I have searched for similar problems and although found the same error the resolutions did not work.

 

Running lsof | grep mnt returns nothing.

 

Any suggestions on how to diagnose what is causing this so I can stop it happening on every shutdown would be appreciated.

 

Thanks

Ian

syslog-2015-04-03.zip

[itimpi]

Have you tried logging in via telnet and following the suggestions in the syslog?  It is saying that something is still using /mnt/user and if you have a look you might be able to work out what it is.

[trurl]

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

[itimpi]

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

Also a screen session can cause this - easy to forget they might still be hanging around

[IG82]

Have you tried logging in via telnet and following the suggestions in the syslog?  It is saying that something is still using /mnt/user and if you have a look you might be able to work out what it is.

 

Yeah, as above nothing returned by lsof, assuming fuser /mnt is the correct way to run that returns nothing either.

 

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

 

I have nothing open I am aware of, and wouldn't that report as something being open via lsof or fuser?

 

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

Also a screen session can cause this - easy to forget they might still be hanging around

 

Yup, have done this many times before so first thing I do is exit any screen sessions before trying to shutdown now

[IG82]

I gave up in the end and pulled the power.

 

I had tried the provided powerdown script.  After this the webgui could not be accessed although telnet was still available.

 

Next boot it did not require a parity check so can only assume that the script did most of the job cleanly

 

Would be great to have some more ideas here, not being able to shutdown the server cleanly and at will is an issue.

[Golfonauta]

I have same issues in 6.0.1, it keeps retrying to unmount...

[dchamb]

Same here and running 6.0.1. No answers?

[itimpi]

Same here and running 6.0.1. No answers?

Any reason why you are not on the current release (6.1.3)?

 

The Open Files plugin can help with troubleshooting this sort of problems.  Also it can be worth installing the Powerdown plugin as this is more likely to succeed in successfully shutting down the array than the standard built-in version.

[Gragorg]

I occasionally get this error.  Once you power down your server pull the unraid usb stick and put it in a windows PC.  Windows will detect errors and ask you to scan it.  Let windows scan the usb and fix the errors.  Eject the usb and put it back in your server.  This has always fixed it for me. 

[morbidpete]

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

Also a screen session can cause this - easy to forget they might still be hanging around

 

waited an hour until googling this. Found this post. Damn screen sessions  thanks for the tip

[ChrisMChristian]

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

Also a screen session can cause this - easy to forget they might still be hanging around

 

IF you are sure nothing important has a share mounted (which could be anything, stuck session that is no longer, etc).  I just ssh to my unRAID server and execute:

ps -ef | grep /mnt/user

 

I then take the PID and perform a graceful kill (I've only had to do kill -9 once)

kill <PID>

 

as soon as all mounts in the process go away, your array stopping will be successful.

[Ulvan]

On 4/3/2015 at 2:46 PM, itimpi said:

Also a screen session can cause this - easy to forget they might still be hanging around

 

Apologies for necro, but big thanks for this, it has happened to me several times and only now I realized that I have one of those sessions running!

[AlexT]

Got exactly same issue trying to stop the array, and the cause was vsftpd server, that was using /mnt/users/...
so killall vsftpd immediatelly solved the issue and array got stopped.

Hope that will help someone

[jazzy192]

On 4/3/2015 at 1:46 PM, itimpi said:

Also a screen session can cause this - easy to forget they might still be hanging around

Exactly what causing the same problem with me! I had a screen of Rclone or running! 

[bitcore]

On 4/3/2015 at 8:46 AM, itimpi said:

Also a screen session can cause this - easy to forget they might still be hanging around

This got me.

Thanks!!!!

[elco1965]

This just started happening to me. I have looked at the syslog and the diagnostics. Something is preventing Unraid from umounting disk 13 and the cache. The cache is a pool of 4 disks configured in RAID10. I can shutdown and reboot the array but when I try to stop the array it gets stuck posting "Retry Unmounting disk share(s)" at the bottom. This forces me to refresh the web gui so the reboot button will light up. There is an issue with the libvirt img. Sometimes when I restart the array "starting services Libvirtwol..." appears and doesn't go away. I am only running one Win10 VM. Same machine with no changes for a while now. I think something with the VM is holding up the shutdown process. But with services stopped, how? I've been using Unraid long enough to know that I am not sophisticated enough to figurine out what it is. Thank you in advance. 

pisa-diagnostics-20210216-1218.zip pisa-syslog-20210216-2018.zip

[Squid]

Since the VM is still running, that would be the prime candidate

 

Windows isn't great because half the time it decides to pop up a window telling you it can't shut down for such and such reason.  Best to set the VM in Settings - VM Settings to hibernate and install the virtio guest tool on the VM (its on the virtio ISO disk)

[elco1965]

Squid thanks for the reply.

 

I have just reinstalled virtio guest tool on the VM. I am certain this was done in the past. I have also reconfirmed all the settings in the wiki here. I rebooted the VM and then tried to stop the array with the same result as before.

[WexfordStyle]

On 2/1/2017 at 9:47 AM, ChrisMChristian said:

 

IF you are sure nothing important has a share mounted (which could be anything, stuck session that is no longer, etc).  I just ssh to my unRAID server and execute:

ps -ef | grep /mnt/user

 

I then take the PID and perform a graceful kill (I've only had to do kill -9 once)

kill <PID>

 

as soon as all mounts in the process go away, your array stopping will be successful.

 

This solved it for me. Thank you!

[oldirtdog]

On 4/3/2015 at 8:41 AM, trurl said:

Also, if you do have a telnet or console session with the current directory on the array, it won't be able to unmount either.

 

Yep... this was it for me... sometimes it's the most obvious things