Certain files hang on copy

[squeakybadger]

Hi,

I've noticed the copy operation will hang on certain files on datasets (either copying to the same dataset, or across datasets)

Attached a video showing the copy hangs for a while, before copying over (larger files seem to be limited to a low speed, which eventually dies)

Moving the same file around is instant, as is wrapping it in a zip.

Not sure if it is to do with the ADS (Alternate DataStreams) buffer size, or if something is configured wrong.

Output of testparm -s:

Code:

Load smb config files from /usr/local/etc/smb4.conf
Loaded services file OK.
Weak crypto is allowed

Server role: ROLE_DOMAIN_MEMBER

# Global parameters
[global]
        aio max threads = 2
        allow trusted domains = No
        bind interfaces only = Yes
        client ldap sasl wrapping = seal
        disable spoolss = Yes
        dns proxy = No
        domain master = No
        enable web service discovery = Yes
        kerberos method = secrets and keytab
        kernel change notify = No
        load printers = No
        local master = No
        logging = file
        max log size = 5120
        nsupdate command = /usr/local/bin/samba-nsupdate -g
        preferred master = No
        realm = PIKCELLS.LOCAL
        registry shares = Yes
        restrict anonymous = 2
        security = ADS
        server multi channel support = No
        server role = member server
        server string = FreeNAS Server
        template shell = /bin/sh
        unix extensions = No
        winbind cache time = 7200
        winbind enum groups = Yes
        winbind enum users = Yes
        winbind max domain connections = 10
        workgroup = PIK
        idmap config *: range = 90000001-100000000
        idmap config pikcells: range = 100000001-200000000
        idmap config pikcells: backend = rid
        fruit:nfs_aces = No
        rpc_server:mdssvc = disabled
        rpc_daemon:mdssd = disabled
        idmap config * : backend = tdb
        directory name cache size = 0
        dos filemode = Yes


[PROJECTS]
        ea support = No
        hide dot files = No
        mangled names = no
        path = /mnt/PIK/PROJECTS
        read only = No
        smbd max xattr size = 2097152
        vfs objects = catia zfs_space fruit streams_xattr ixnas zfsacl
        fruit:resource = stream
        fruit:metadata = stream
        fruit:encoding = native
        nfs4:chown = true
        ixnas:dosattrib_xattr = false

Running Truenas Core 13.0-U5.1

Any ideas or things to look at?

Thanks