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[Extension] Zrep - ZFS replication and failover (No Perl Required)

XigmaNAS Extensions / Add-ons

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#31

Post by ernie » 11 Oct 2018 21:07

Thank you Jose
NAS 1&2:
System: GA-6LXGH(BIOS: R01 04/30/2014) / 16 Go ECC
XigmaNAS 12.0.0.4.6766 embedded
NAS1: Xeon E3 1241@3.5GHz, 4HDD@2To/raidz2 (WD red), 3HDD@300Go/sas/raidz1 (Hitachi), 1SSD cache, Zlog on sas mirror
NAS2: G3220@3GHz, 3HDD@2To/raidz1 (Seagate), 1SSD cache, 1HDD@300Go/UFS
UPS: APC Back-UPS RS 900G
Case : Fractal Design XL R2

Extensions & services:
NAS1: OBI (Plex, extendedGUI, BTSync, zrep, rclone), nfs, UPS,
NAS2: OBI (extendedGUI, zrep (backup mode))

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#32

Post by karlandtanya » 27 Oct 2018 18:03

Thank you very much for this addon; this is absolutely excellent!

Briefly--I the init script needs a rehash at the end, but I am only a tester, not a dev--so maybe I'm doing something wrong?
Details below...


After installing it I am able to remove all my hackish unionfs. Plus the benefit of automatic updates, etc.
I will practice with it at home for a while and next week will upgrade the fileservers at work!

It seems that after a reboot the command zrep is not found:

Code: Select all

# which zrep
zrep: Command not found.
the links were created by the startup script (excellent!):

Code: Select all

# ls -la /usr/local/bin/zrep
lrwxr-xr-x  1 root  wheel  60 Oct 27 11:41 /usr/local/bin/zrep -> /mnt/data/opt/extensions/zrep/zrep-addon//usr/local/bin/zrep
After a rehash, zrep is found and works exactly as expected

Code: Select all

# rehash
gizmonas-pri: /# which zrep
/usr/local/bin/zrep
# zrep status
data/backups                                   last synced Sat Oct 27 11:31 2018
data/db                                        last synced Sat Oct 27 11:31 2018
data/dropbox                                   last synced Sat Oct 27 11:31 2018
data/ftproot                                   last synced Sat Oct 27 11:31 2018
data/library                                   last synced Sat Oct 27 11:31 2018
data/media                                     last synced Sat Oct 27 11:31 2018
data/scripts                                   last synced Sat Oct 27 11:32 2018
data/thebrig                                   last synced Sat Oct 27 11:32 2018
data/vbox                                      last synced Sat Oct 27 11:32 2018
for the moment, I just tack on a rehash after the init

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#33

Post by raulfg3 » 27 Oct 2018 18:48

good addition.

Congratulations for your efforts.
12.0.0.4 (revision 6766)+OBI on SUPERMICRO X8SIL-F 8GB of ECC RAM, 12x3TB disk in 3 vdev in RaidZ1 = 32TB Raw size only 22TB usable

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#34

Post by JoseMR » 29 Oct 2018 20:52

karlandtanya wrote:
27 Oct 2018 18:03
Thank you very much for this addon; this is absolutely excellent!

Briefly--I the init script needs a rehash at the end, but I am only a tester, not a dev--so maybe I'm doing something wrong?
Details below...


After installing it I am able to remove all my hackish unionfs. Plus the benefit of automatic updates, etc.
I will practice with it at home for a while and next week will upgrade the fileservers at work!

It seems that after a reboot the command zrep is not found:

Code: Select all

# which zrep
zrep: Command not found.
the links were created by the startup script (excellent!):

Code: Select all

# ls -la /usr/local/bin/zrep
lrwxr-xr-x  1 root  wheel  60 Oct 27 11:41 /usr/local/bin/zrep -> /mnt/data/opt/extensions/zrep/zrep-addon//usr/local/bin/zrep
After a rehash, zrep is found and works exactly as expected

...

for the moment, I just tack on a rehash after the init
Hello, thank you for testing and reporting, indeed the rehash has to be issued only once after initial installation, but no longer needed after a reboot, I will have a look on my testing environment and report back if reproduced or not.

EDIT: I can confirm zrep is working as expected after reboots in my XigmaNAS Embedded VirtualBox dev environment, you can either try to move the PostInit command to be triggered earlier or call the command with full path as:

Code: Select all

# /usr/local/bin/zrep

or with

# ksh93 zrep
Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#35

Post by JoseMR » 12 Apr 2019 02:43

Hello, I've added a very simple quick overview extension gui page, it display extension/zrep versions and lets users perform upgrades withing the WebGUI for convenience, also have a uninstall button to completely remove extension files/postinit and zrep packages after confirmation popup.

Screenshots:
001.png
002.png

Code: Select all

xigmanas: ~# zrep-init -h
Usage: zrep-init -[option]
Options:
        -u  Upgrade Zrep/Add-On packages.
        -v  Display product versions.
        -g  Enables the addon GUI.
        -t  Disable the addon GUI.
        -x  Reset zrep-addon.
        -r  Remove zrep-addon.
        -h  Display this help message.
xigmanas: ~#
Regards
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System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#36

Post by eire1274 » 07 May 2019 06:54

I'm having an issue with configuration for this as an alternative to rclone.

Command line:

Code: Select all

zrep init Media_host/Master zeus-server.local Backup/Snapshots
initializes the source dataset fine and creates the "Snapshots" dataset on the Backup pool, but then it asks for the root password for zeus-server.local (this is the system that holds both target and host pools) and when given this, it asks for it again. Forever. Proper password attempts or bad ones all just respond with another password request.

I have used zrep on Linux before between two servers, but I don't seem to be having much luck here on my home system. Any ideas? I would prefer regular backup verification through the day over rclone's once-a-day via cron schedule.

I have uninstalled and reinstalled zrep via OBI, rebooted, etc., with no luck. This is on a fairly fresh install of 12 beta, full OS. Specs in signature.
XigmaNAS 12.0.0.4r6625 64-bit, ASUS AM1M-A w/ Athlon 5350 SoC 4c/4t 2.05Ghz, 8GB ECC UDIMM, Patriot 60GB SSD SATA OS host, LSI SAS9200-8E, 4x2TB SATA ZFS, 1x8TB USB mirror

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#37

Post by JoseMR » 08 May 2019 18:34

eire1274 wrote:
07 May 2019 06:54
I'm having an issue with configuration for this as an alternative to rclone.

Command line:

Code: Select all

zrep init Media_host/Master zeus-server.local Backup/Snapshots
initializes the source dataset fine and creates the "Snapshots" dataset on the Backup pool, but then it asks for the root password for zeus-server.local (this is the system that holds both target and host pools) and when given this, it asks for it again. Forever. Proper password attempts or bad ones all just respond with another password request.

I have used zrep on Linux before between two servers, but I don't seem to be having much luck here on my home system. Any ideas? I would prefer regular backup verification through the day over rclone's once-a-day via cron schedule.

I have uninstalled and reinstalled zrep via OBI, rebooted, etc., with no luck. This is on a fairly fresh install of 12 beta, full OS. Specs in signature.

Hi, zrep is working fine at least in my test VM, sample zrep init/sync output below.

zrep initial stup:

Code: Select all

xigmanas: ~# zrep init tank1/Data localhost tank2/Data
Setting properties on tank1/Data
Warning: zfs recv lacking -o readonly
Creating readonly destination filesystem as separate step
Creating snapshot tank1/Data@zrep_000000
Sending initial replication stream to localhost:tank2/Data
Initialization copy of tank1/Data to localhost:tank2/Data complete
xigmanas: ~# zrep status
tank1/Data                                           last: Wed May  8 16:20 2019
xigmanas: ~#

zrep subsequent syncs:

Code: Select all

xigmanas: ~# zrep -S tank1/Data
sending tank1/Data@zrep_000004 to localhost:tank2/Data
Expiring zrep snaps on tank1/Data
Also running expire on localhost:tank2/Data now...
Expiring zrep snaps on tank2/Data
xigmanas: ~# zrep status
tank1/Data                                           last: Wed May  8 16:26 2019
xigmanas: ~#
Please re-parse the zrep documentation before scripting and running in production.

Also note that for remote replication tasks you need to use RSA keys.

Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#38

Post by ernie » 23 Jun 2019 08:57

Hello

I seen this on zrep site:

Some people prefer to run zrep as a non-privileged user. If your implementation of ZFS supports the "allow" syntax, you may be able to do this, if you give the designated user the following privileges:
zfs allow zrepuser \
mount,snapshot,destroy,receive,clone,create,send,rename,hold,userprop \
your/fs/here

In order to avoid root access via ssh, do you think that an improvement of zrep extension is possible in order to have a default zrepuser ?
As for Plex extension or vbox.

Do you think also that we can have a view where we can attribute the right on pool in order to manage easily the command  »zfs allow »?

Just some idea as I am trying to not use now root user for action on nas.

All other proposition is welcome

Thanks
NAS 1&2:
System: GA-6LXGH(BIOS: R01 04/30/2014) / 16 Go ECC
XigmaNAS 12.0.0.4.6766 embedded
NAS1: Xeon E3 1241@3.5GHz, 4HDD@2To/raidz2 (WD red), 3HDD@300Go/sas/raidz1 (Hitachi), 1SSD cache, Zlog on sas mirror
NAS2: G3220@3GHz, 3HDD@2To/raidz1 (Seagate), 1SSD cache, 1HDD@300Go/UFS
UPS: APC Back-UPS RS 900G
Case : Fractal Design XL R2

Extensions & services:
NAS1: OBI (Plex, extendedGUI, BTSync, zrep, rclone), nfs, UPS,
NAS2: OBI (extendedGUI, zrep (backup mode))

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#39

Post by JoseMR » 23 Jun 2019 14:03

ernie wrote:
23 Jun 2019 08:57
Hello

I seen this on zrep site:

Some people prefer to run zrep as a non-privileged user. If your implementation of ZFS supports the "allow" syntax, you may be able to do this, if you give the designated user the following privileges:
zfs allow zrepuser \
mount,snapshot,destroy,receive,clone,create,send,rename,hold,userprop \
your/fs/here

In order to avoid root access via ssh, do you think that an improvement of zrep extension is possible in order to have a default zrepuser ?
As for Plex extension or vbox.

Do you think also that we can have a view where we can attribute the right on pool in order to manage easily the command  »zfs allow »?

Just some idea as I am trying to not use now root user for action on nas.

All other proposition is welcome

Thanks
Hi ernie, since I just use password-less-key rsa root auth, and only access SSH on my server locally, I've ignored about the zrep user,
since I though that most zrep users perform data replication through a cron job as root.

However since you are notorious advanced zrep user, please can you test on the above stuff and post your steps for reference.

I think the best way around this "zfs allow zrepuser" is to add it as an user selectable option/checkbox with a save option in the Extension GUI if the user want to allow zrepuser.

Just let me know about.

Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#40

Post by ernie » 23 Jun 2019 14:59

Hello
Yes I will prepare the steps. I will test so it will take some weeks.
BR
NAS 1&2:
System: GA-6LXGH(BIOS: R01 04/30/2014) / 16 Go ECC
XigmaNAS 12.0.0.4.6766 embedded
NAS1: Xeon E3 1241@3.5GHz, 4HDD@2To/raidz2 (WD red), 3HDD@300Go/sas/raidz1 (Hitachi), 1SSD cache, Zlog on sas mirror
NAS2: G3220@3GHz, 3HDD@2To/raidz1 (Seagate), 1SSD cache, 1HDD@300Go/UFS
UPS: APC Back-UPS RS 900G
Case : Fractal Design XL R2

Extensions & services:
NAS1: OBI (Plex, extendedGUI, BTSync, zrep, rclone), nfs, UPS,
NAS2: OBI (extendedGUI, zrep (backup mode))

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#41

Post by JoseMR » 23 Jun 2019 16:53

ernie wrote:
23 Jun 2019 14:59
Hello
Yes I will prepare the steps. I will test so it will take some weeks.
BR

Hi, thank you for taking the time to test and send the results and experience.

I will add the option to the zrep Extension GUI if everything works as you expect.

Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
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JoseMRPubServ
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#42

Post by cookiemonster » 12 Oct 2019 00:51

I've finally setup a backup xigmanas server to zrep to. I've come across the password "issue".
I have the source and destination servers on the same XigmaNas version, same zrep version installed with JoseMR fantastic OBI installer. I've set the same username on both servers and granted the privileges to that user onto both pools but Xigma's UI doesn't list the "allow" property for the dataset.
The user is allowed ssh access on both servers.
With sudo:
[myuserhere@freenas ~]$ sudo zrep init Raid5Disk/nas1 xigmaa metis/nas1
Setting properties on Raid5Disk/nas1
Warning: zfs recv lacking -o readonly
Creating readonly destination filesystem as separate step
Password for root@xigmaa.local:
-- and continues asking for root password until it ssh blocks due to too many attempts. My dest server doesn't allow root ssh access.

Without sudo:
I get prompted for myuserhere password on the dest but then errors stating the dataset already exists and if I remove it first, insufficient privileges:

[myuserhere@freenas ~]$ zrep init Raid5Disk/nas1 xigmaa metis/nas1
Setting properties on Raid5Disk/nas1
Warning: zfs recv lacking -o readonly
Creating readonly destination filesystem as separate step
Password for myuserhere@xigmaa.local:
cannot mount 'metis/nas1': Insufficient privileges
filesystem successfully created, but not mounted
Error: Cannot create xigmaa:metis/nas1

JoseMR, if I may say so, I think we could do with some testing with two servers. Seems like locally all good. What do you think?
Main: Xigmanas 11.2.0.4 x64-full-RootOnZFS on Supermicro X8DT3. zroot on mirrorred pair of CRUCIAL_CT64M225. Memory: 24GB ECC; 2 Xeon E5645 CPUs; Storage: (HBA) - LSI SAS 9211-4i with 3 SATA x 1 Tb in raidZ1, 1 x 3 Tb SAS drive as single stripe.
Spare1: HP DL580 G5; 128 GB ECC RAM; 4 CPU; 8 x 500 GB disks on H210i
Spare2: HP DL360 G7; 6 GB ECC RAM; 1 Xeon CPU; 5 x 500 GB disks on H210i
Spare3: HP DL380 G7; 24 GB ECC RAM; 2 Xeon E5645 CPUs; 8 x 500 GB disks on IBM M1015 flashed to LSI9211-IT

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#43

Post by JoseMR » 12 Oct 2019 02:45

cookiemonster wrote:
12 Oct 2019 00:51
I've finally setup a backup xigmanas server to zrep to. I've come across the password "issue".
I have the source and destination servers on the same XigmaNas version, same zrep version installed with JoseMR fantastic OBI installer. I've set the same username on both servers and granted the privileges to that user onto both pools but Xigma's UI doesn't list the "allow" property for the dataset.
The user is allowed ssh access on both servers.
With sudo:
[myuserhere@freenas ~]$ sudo zrep init Raid5Disk/nas1 xigmaa metis/nas1
Setting properties on Raid5Disk/nas1
Warning: zfs recv lacking -o readonly
Creating readonly destination filesystem as separate step
Password for root@xigmaa.local:
-- and continues asking for root password until it ssh blocks due to too many attempts. My dest server doesn't allow root ssh access.

Without sudo:
I get prompted for myuserhere password on the dest but then errors stating the dataset already exists and if I remove it first, insufficient privileges:

[myuserhere@freenas ~]$ zrep init Raid5Disk/nas1 xigmaa metis/nas1
Setting properties on Raid5Disk/nas1
Warning: zfs recv lacking -o readonly
Creating readonly destination filesystem as separate step
Password for myuserhere@xigmaa.local:
cannot mount 'metis/nas1': Insufficient privileges
filesystem successfully created, but not mounted
Error: Cannot create xigmaa:metis/nas1

JoseMR, if I may say so, I think we could do with some testing with two servers. Seems like locally all good. What do you think?

Hi cookiemonster, I haven't much time to play with zrep lately but Indeed it should be run by system administrators group, I guess when I tested some time ago I've used password-less keys as I don't like putting plain text passwords in scripts/commands, so maybe you can give it a shoot with a pair of pub/priv RSA keys, you can use "ssh-keygen" command to generate a pair then rename them.

P.S PHP is not my cup of tea ;) but hopefully this CLI extensions will bring some basic settings panel in the future for setup ease, but for now I'm focusing on the XigmaNAS Bastille Container Manager add-on and few Webmin modules, so zrep will take some time.

Also indeed kudos to the OBI developer crest and his support on some PHP pages for my add-ons. ;)

Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
Addons at GitHub
JoseMRPubServ
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#44

Post by cookiemonster » 12 Oct 2019 17:38

Thanks JoseMR. I'll try that. I use ssh keys but I must admit I'm not sure if what you mean is to replace my current login from un/pw to just keys or something else. I'll have a go to see if I can figure out what you mean.
By the way the container work sounds a lot more interesting and useful.
Main: Xigmanas 11.2.0.4 x64-full-RootOnZFS on Supermicro X8DT3. zroot on mirrorred pair of CRUCIAL_CT64M225. Memory: 24GB ECC; 2 Xeon E5645 CPUs; Storage: (HBA) - LSI SAS 9211-4i with 3 SATA x 1 Tb in raidZ1, 1 x 3 Tb SAS drive as single stripe.
Spare1: HP DL580 G5; 128 GB ECC RAM; 4 CPU; 8 x 500 GB disks on H210i
Spare2: HP DL360 G7; 6 GB ECC RAM; 1 Xeon CPU; 5 x 500 GB disks on H210i
Spare3: HP DL380 G7; 24 GB ECC RAM; 2 Xeon E5645 CPUs; 8 x 500 GB disks on IBM M1015 flashed to LSI9211-IT

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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#45

Post by JoseMR » 13 Oct 2019 01:01

cookiemonster wrote:
12 Oct 2019 17:38
Thanks JoseMR. I'll try that. I use ssh keys but I must admit I'm not sure if what you mean is to replace my current login from un/pw to just keys or something else. I'll have a go to see if I can figure out what you mean.
By the way the container work sounds a lot more interesting and useful.

Hi, sorry for my poor explanation, I meant to just use auth key/pair for the zrep ssh login so that you don't have to set current user password in the ssh command or scripts as plain text, for example here below is how I backup Boot Environments to a network server with password-less key login:

Code: Select all

zfs send zroot/ROOT/be_name@snap_date | ssh -q -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@192.168.1.250 "xz -0 -v --threads=0 > /path/to/be_backup.zfs"
Optionally I've set "UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no" to disable the strict host key checking to avoid interruptions upon host changes, this can also be set on the ssh config as well, also since this is a local lab network, I just used root user.

However this is pretty much similar for zrep too, but I believe wen I quick tested time ago, I added the zrep user to the wheel, though I have to re-try as a non-privileged user and see how it goes.

Regards
System: FreeBSD 12 RootOnZFS, MB: Supermicro X8SI6-F, Xeon X3450, 16GB DDR3 ECC RDIMMs.
Addons at GitHub
JoseMRPubServ
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Re: [Extension] Zrep - ZFS replication and failover (No Perl Required)

#46

Post by cookiemonster » 13 Oct 2019 18:11

Thanks for the elaboration JoseMR, helpful as always. I'll give that a try. By the way my user was already in the wheel group all along. I normally disable root access to sshd as a normal practice.
Main: Xigmanas 11.2.0.4 x64-full-RootOnZFS on Supermicro X8DT3. zroot on mirrorred pair of CRUCIAL_CT64M225. Memory: 24GB ECC; 2 Xeon E5645 CPUs; Storage: (HBA) - LSI SAS 9211-4i with 3 SATA x 1 Tb in raidZ1, 1 x 3 Tb SAS drive as single stripe.
Spare1: HP DL580 G5; 128 GB ECC RAM; 4 CPU; 8 x 500 GB disks on H210i
Spare2: HP DL360 G7; 6 GB ECC RAM; 1 Xeon CPU; 5 x 500 GB disks on H210i
Spare3: HP DL380 G7; 24 GB ECC RAM; 2 Xeon E5645 CPUs; 8 x 500 GB disks on IBM M1015 flashed to LSI9211-IT

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