I set up my Backup server with Debian 12 because - that is what you use for backup sys

I tested further to first manually sync/create the dataset: <div class="snippet-cl

Syncoid Issue 256. Incompatible ZFS versions? about sanoid HOT 2 CLOSED

Sieboldianus commented on June 1, 2024

Syncoid Issue 256. Incompatible ZFS versions?

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Sieboldianus commented on June 1, 2024

I tested further to first manually sync/create the dataset:

zfs send -w tank_hdd/lxc/lbsndb_docker@Test_20231226 | ssh [email protected] zfs receive tank/hdd/lxc/lbsndb_docker

This worked.

Then create another snapshot Test_20231226b (no changes since the first @Test_20231226), but this also fails with syncoid:

DEBUG: getting estimated transfer size from source -S /tmp/syncoid-proxmox-1703604667-4296 proxmox using "ssh     -i ... -S /tmp/syncoid-proxmox-1703604667-4296 proxmox  zfs send -R -w  -nvP -I ''"'"'tank_hdd/lxc/lbsndb_docker@Test_20231226'"'"'' ''"'"'tank_hdd/lxc/lbsndb_docker@Test_20231226b'"'"'' 2>&1 |"...
Use of uninitialized value $sendsize in substitution (s///) at /usr/sbin/syncoid line 2022.
Use of uninitialized value $sendsize in scalar chomp at /usr/sbin/syncoid line 2024.
Use of uninitialized value $sendsize in pattern match (m//) at /usr/sbin/syncoid line 2027.
DEBUG: sendsize =
Sending incremental tank_hdd/lxc/lbsndb_docker@Test_20231226 ... Test_20231226b (~ UNKNOWN):
DEBUG: ssh     -i ... -S /tmp/syncoid-proxmox-1703604667-4296 proxmox ' zfs send -R -w  -I '"'"'tank_hdd/lxc/lbsndb_docker'"'"'@'"'"'Test_20231226'"'"' '"'"'tank_hdd/lxc/lbsndb_docker'"'"'@'"'"'Test_20231226b'"'"' | lzop ' | mbuffer  -q -s 128k -m 16M | lzop -dfc | pv -p -t -e -r -b -s 0 |  zfs receive  -s -F 'tank/hdd/lxc/lbsndb_docker' 2>&1
lzop: <stdin>: not a lzop file
0.00 B 0:00:00 [0.00 B/s] [<=>                                                                                                                                               ]
cannot receive: failed to read from stream
CRITICAL ERROR: ssh     -i ... -S /tmp/syncoid-proxmox-1703604667-4296 proxmox ' zfs send -R -w  -I '"'"'tank_hdd/lxc/lbsndb_docker'"'"'@'"'"'Test_20231226'"'"' '"'"'tank_hdd/lxc/lbsndb_docker'"'"'@'"'"'Test_20231226b'"'"' | lzop ' | mbuffer  -q -s 128k -m 16M | lzop -dfc | pv -p -t -e -r -b -s 0 |  zfs receive  -s -F 'tank/hdd/lxc/lbsndb_docker' 2>&1 failed: 256 at /usr/sbin/syncoid line 889.

I have also given the receiving user full permissions:

sudo zfs allow zfs-backup create,destroy,diff,mount,readonly,receive,release,send,userprop tank/hdd/lxc

but still getting the above error.

The lzop: <stdin>: not a lzop file somewhat seems to tell me that this is on the sender side (e.g. empty file stream being send), but I don't know why. The sende side has all privileges allowed: zfs allow zfs-backup send,snapshot,hold tank_hdd/lxc/lbsndb_docker

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Sieboldianus commented on June 1, 2024

Well, it was the script I used to limit the ssh keys permissions. Closing..

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