Questions tagged [znapzend]

ZnapZend is an open source zfs send/receive backup tool with mbuffer and ssh support.

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znapzend not taking snapshots after the initial set up

I installed znapzend on unraid and did the initial configuration. My daemon is running but zfs list -t snapshot shows no datasets available *** backup plan: citadel *** enabled = on ...
1 vote
0 answers
26 views

ERROR: zLog must be specified at creation time

I have a question, i simply want to make a lokal backup of my zfs filesystem. This is the command i got: znapzendzetup create --recursive --tsformat='%Y-%m-%d-%H%M%S' SRC data DST '1y=>1w' HDD Now ...
1 vote
0 answers
183 views

znapzend no longer works after upgrade to Ubuntu Server 20.04.1

Ubuntu Server was upgraded from 18.04 LTS to 20.04.1 LTS and subsequently znapzend service fails to start with the reason being: znapzend[3436]: ListUtil.c: loadable library and perl binaries are ...
1 vote
1 answer
91 views

how to setup Carton, to compile znapzend 0.20.0?

When compiling from source using: # ./configure --prefix=/opt/znapzend-0.20.0 # make # make install I get this error: ! Couldn't find module or a distribution Carton I can compile version 0.19.1 ...
0 votes
1 answer
213 views

znapzend systemd service and command line arguments

I'm starting znapzend using the included systemd unit file and I'm wondering if there's any way, short of editing the unit file and changing the ExecStart command line, to specify runtime options for ...
2 votes
2 answers
767 views

How to monitor znapzend?

How one can monitor znapzend? Yes, I am aware it produces logs, but logs are pretty extensive and reading them through when you are backing up many filesystems is not convenient at all. Ideally: ...
1 vote
1 answer
277 views

Can znapzend be used for replication only?

Is there a recommended znapzend plan to specify when using znapzend for replication only? I've been able to make it work by specifying a src and dst plan of ''1s=>15min' which essentially says do a ...
1 vote
0 answers
301 views

Configure "znapzend" on centralized backup server

Any idea if I can configure/use znapzend in way to "pull"/zfs receive snapshots from servers that I want to backup? I would like to have configuration where a backup server initiates backup process.
1 vote
1 answer
831 views

Time to run znapzend job

I have setup znapzend and have created the following job: /opt/znapzend/bin/znapzendzetup create --recursive --mbuffer=/usr/bin/mbuffer --mbuffersize=1G \ > --tsformat='znapzend-%Y-%m-%d-%H%M%S' \ > ...
3 votes
2 answers
1k views

How can I ratelimit znapzend?

I'm using znapzend to do some backups and unfortunately its flooding my gigE connection. I would like the ability to ratelimit znapsend. Something like: zfs send | pv -L 200m | ssh $host zfs recv ...
0 votes
1 answer
158 views

Znapzend installation error

I am trying to install znapzend 0.15.7 in OmniOS R151014 but got the following error: root@sgtestnas01:/opt# wget https://github.com/oetiker/znapzend/releases/download/v0.15.7/znapzend-0.15.7.tar.gz` ...
1 vote
2 answers
673 views

"Host key verification failed" on znapzendzetup create command

Just getting started with znapzend which compiled fine on Ubuntu 14.04 (the source machine, since updated to Ubuntu 16.04). Destination machine is Ubuntu 16.04 ('backupserver'). I've setup a non-...
3 votes
1 answer
508 views

How to define SSH port for target server with znapzendsetup

I have a firewalled server to send data to over ssh on public network, but the SSH port is not the default 22. How do I configure the port to znapzendzetup? For mbuffer setting the port is not an ...
0 votes
1 answer
257 views

znapzend throwing up errors attempting to delete old snapshots

I am moving backup to znapzend. I see the following error on the backup server. However the backups are working fine and I can see the latest snapshots the backup server. The errors below pertain to ...
0 votes
1 answer
501 views

znapzend DST file system

I'm working with a new znapzend environment. The snapshots are happening, and I have just one destination, a remote server set up just to store the archived data. It appears the data stored on the DST ...
2 votes
1 answer
1k views

znapzend cannot receive new filesystem stream: dataset is busy

have 2 test system running last Nexenta 4.0.3-FP4community .Master and slave , mbuffer installed on both,ssh trust is ok between hosts when running znapzend on master replication snapshot did not ...
1 vote
0 answers
86 views

Multiple arguments in znapzendzetup --tsformat?

I was wondering if znapzendzetup --tsformat option can take multiple arguments? I.e. one per interval/retention period.
0 votes
1 answer
369 views

znapzend fails when running from cron

I'm having an issue with znapzend --runonce I am running Debian Wheezy I'm running from cron as I need to stagger my snapshots I have the following in my crontab PATH=/usr/local/sbin:/usr/local/bin:/...
1 vote
1 answer
312 views

znapzendzetup create fails indicating it can't find SRC filesystem being created

Why does znapzendzetup create fail indicating it can't find SRC filesystem being created sudo znapzendzetup create --tsformat='%Y-%m-%dT%H:%M:%SZ' SRC '1min=>10min,5min=>20min' /mnt/test/src ...