I have the latest version of TrueNAS scale as my client. On the server / replication destination it’s Debian Bookworm:
‘’’
root@rescue ~ # lsb_release -a && zfs --version
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
zfs-2.4.0-1
zfs-kmod-2.4.0-1
‘’’
My initial replication moved over 2 of my smaller-ish data sets just fine, but when it hit the third, which is much larger, it’s just been sitting there for days so I grew suspicious. When I ran an strace on the zfs recv I see sitting there I got:
‘’’
root@rescue /backuppool/received-backups # strace -p 222489
strace: Process 222489 attached
ioctl(4, ZFS_IOC_RECV_NEW, 0x7ffc1ed0f450) = -1 EBADE (Invalid exchange)
ioctl(3, ZFS_IOC_OBJSET_STATS, 0x7ffc1ed13750) = 0
write(2, “cannot receive resume stream: ch”…, 512) = 512
rmdir(“/backuppool/received-backups/homes”) = -1 EROFS (Read-only file system)
readlink(“/proc/self/ns/user”, “user:[4026531837]”, 127) = 17
ioctl(3, ZFS_IOC_OBJSET_STATS, 0x7ffc1ed11c40) = 0
close(3) = 0
close(4) = 0
exit_group(1) = ?
+++ exited with 1 +++
‘’’
This seems … Not so good 
Does anyone have any thoughts on what I should do and how I can/should recover?
Thanks in advance!
lUpdate: Maybe it’s actually working OK? I took another look..
‘’’
root@rescue ~ # ps -deaf | grep zfs
root 222676 222667 0 21:59 ? 00:00:00 sh -c PATH=$PATH:/usr/local/sbin:/usr/sbin:/sbin zfs recv -s -F -x mountpoint -x sharesmb -x sharenfs backuppool/received-backups/homes
root 222679 222676 0 21:59 ? 00:00:37 zfs recv -s -F -x mountpoint -x sharesmb -x sharenfs backuppool/received-backups/homes
root 225476 224218 0 23:07 pts/1 00:00:00 grep zfs
root@rescue ~ OpenZFS
‘’’
and if I strace that first zsh recv process I see a TON of happy looking writes:
(Tiny sample)
‘’’
root@rescue ~ # ps -deaf | grep zfs
root 222676 222667 0 21:59 ? 00:00:00 sh -c PATH=$PATH:/usr/local/sbin:/usr/sbin:/sbin zfs recv -s -F -x mountpoint -x sharesmb -x sharenfs backuppool/received-backups/homes
root 222679 222676 0 21:59 ? 00:00:37 zfs recv -s -F -x mountpoint -x sharesmb -x sharenfs backuppool/received-backups/homes
root 225476 224218 0 23:07 pts/1 00:00:00 grep zfs
root@rescue ~ #
‘’’
So maybe it’s working as advertised and TrueNAS’s replication GUI just doesn’t update when it’s in the middle of a long operaiton?]