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SMB Shares - High CPU usage


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Hello People,

I have two unraid servers at home, one for doing plex and cloud storage and one for backups. If I mount shares, which i want to backup, on the backup server, it creates a process on the plex server that causes high cpu load, which generates 10 watt more on idle. :(
This happens even if the disks are spun down on the plex server and nothing actively accessing the mounted shares (no docker no vms no background scripts). The process dissapears as soon as i stop the array on the backup server (remotes are unmounted). Also, there is no IO wait going on.
Plex Server - Backup Server array offline
 

1626862420_Screenshotfrom2024-01-2419-05-59.thumb.png.eb1217b235cae74ac9593180cc426f8d.png

Plex Server - Backup Server array online

2018370887_Screenshotas2024-01-2419-36-23.thumb.png.10cc8fdef44b1d7d8867a146d884a831.png

 

 

Any ideas how I can solve this issue?

UPDATE: on my backup server i also see
 

an 24 20:25:32 tmoBackUP unassigned.devices: Unmounting Remote SMB/NFS Share '//TMOSRV/pictures'...
Jan 24 20:25:32 tmoBackUP unassigned.devices: Unmount cmd: /sbin/umount -t cifs '/mnt/remotes/TMOSRV_pictures' 2>&1
Jan 24 20:25:35 tmoBackUP unassigned.devices: Unmount of '//TMOSRV/pictures' failed: 'umount: /mnt/remotes/TMOSRV_pictures: target is busy. '
Jan 24 20:25:50 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:333484
Jan 24 20:26:22 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:340252
Jan 24 20:26:53 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:345316
Jan 24 20:27:24 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:349894
Jan 24 20:27:55 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:354671
Jan 24 20:28:26 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:359516
Jan 24 20:28:57 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:363684
Jan 24 20:29:28 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:368522
Jan 24 20:29:59 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:372965
Jan 24 20:30:30 tmoBackUP kernel: CIFS: VFS: \\TMOSRV\pictures Close unmatched open for MID:377236

in my logs.  also i cant unmount \\tmosrv\pictures  with the unassigned devices plugin

Edited by tmodev
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