I am using sftp as the main protocol to transfert files between my computer and my asustor as4004t.
Every time I use sftp, I am left with some sftpmand processes in zombie state on my Asustor.
Over time these processes accumulate and the unit become very slow and need to be rebooted.
Actualy I can create thousands of zombie process if I try to synchronize directories with FreeFileSync.
I also tested with CyberDuck as my sftp client and ended up with zompie processes as well.
I tries reducing the number of sftp channels per connection to one. Still left with zombie processes.
Any idea what the problem is?
sftpmand process zombie
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Re: sftpmand process zombie
I use WinSCP to try SFTP. It's working fine.
Anyway, zombie should be something wrong. I think you can report it to asustor directly. https://support.asustor.com/
Anyway, zombie should be something wrong. I think you can report it to asustor directly. https://support.asustor.com/
- Nazar78
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Re: sftpmand process zombie
These defunct child processes came from their parent's fault, sshd. Did you mount any network paths (cifs/nfs etc.) onto the NAS? Do you see the same issue using the main sftp port 22 by default? It's the one reserved for admins, for non-admin users it's port 2222 by default. If there's any related errors in dmesg it should be reported to Asustor support.
AS5304T - 16GB DDR4 - ADM-OS modded on 2GB RAM
Internal:
- 4x10TB Toshiba RAID10 Ext4-Journal=Off
External 5 Bay USB3:
- 4x2TB Seagate modded RAID0 Btrfs-Compression
- 480GB Intel SSD for modded dm-cache (initramfs auto update patch) and Apps
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Internal:
- 4x10TB Toshiba RAID10 Ext4-Journal=Off
External 5 Bay USB3:
- 4x2TB Seagate modded RAID0 Btrfs-Compression
- 480GB Intel SSD for modded dm-cache (initramfs auto update patch) and Apps
When posting, consider checking the box "Notify me when a reply is posted" to get faster response