Cannot stop array - Need help!

[tknx]

I have seen a couple of messages around this, but no real answer..

 

My array can't be stopped, when I try I get the following repeated in console:
 

Mar 13 10:25:35 Tower root: rmdir: failed to remove '/mnt/user': Device or resource busy
Mar 13 10:25:35 Tower  emhttpd: shcmd (370295): exit status: 1
Mar 13 10:25:35 Tower  emhttpd: shcmd (370297): /usr/local/sbin/update_cron
Mar 13 10:25:35 Tower  emhttpd: Retry unmounting user share(s)...
Mar 13 10:25:40 Tower  emhttpd: shcmd (370298): umount /mnt/user
Mar 13 10:25:40 Tower root: umount: /mnt/user: target is busy.
Mar 13 10:25:40 Tower  emhttpd: shcmd (370298): exit status: 32
Mar 13 10:25:40 Tower  emhttpd: shcmd (370299): rmdir /mnt/user

 

Diagnostics attached.

 

My questions:
 

1. How do I shut down my system safely right now - ideally without needing a parity run?

2. How do I fix this on a permanent basis?

tower-diagnostics-20230313-1026.zip

[JorgeB]

There's no universal answer,

17 minutes ago, tknx said:

failed to remove '/mnt/user': Device or resource busy

This means something is using that mount point and Unraid cannot unmount it, just having for example an SSH session opened to /mnt/user will cause that.

[tknx]

OK

 

So when I run

root@Tower:~# mount | grep "/mnt/user", I get the following:

 

shfs on /mnt/user type fuse.shfs (rw,nosuid,nodev,noatime,user_id=0,group_id=0,default_permissions,allow_other)

 

I have no idea what that means

[tknx]

OK, diagnosed it. Posting for posterity:

 

lsof | grep /mnt/user

 

Got a random bash process:

 

bash      21148                       root  cwd       DIR               0,56     4096 648799827764686976 /mnt/user/media/anime-movies

 

kill -9 21148

 

it shut down. No idea what process that was... maybe an open session somewhere.

[itimpi]

5 hours ago, tknx said:

OK

 

So when I run

root@Tower:~# mount | grep "/mnt/user", I get the following:

 

shfs on /mnt/user type fuse.shfs (rw,nosuid,nodev,noatime,user_id=0,group_id=0,default_permissions,allow_other)

 

I have no idea what that means

That is the part of Unraid that supports the User Share capability.

[tknx]

1 hour ago, itimpi said:

That is the part of Unraid that supports the User Share capability.

So that is a bug right? That it didn’t kill shares on shutdown?

[itimpi]

6 hours ago, tknx said:

So that is a bug right? That it didn’t kill shares on shutdown?

Not necessarily.   I thought you found you had a bash shell running with the current directory being on the array.   That WOULD stop the array from shutting down correctly.