Proxmox iSCSI target with Synology NAS shared storage and troubleshooting

[@ulriceriksson]

Thank you, finally I get it! I couldn't connect the dots between getting the iscsi lun onto the Proxmox host, and allowing the host to actually use it for anything. Creating the LVM storage on top of the iscsi storage was the missing link.

[@YoungfolkKnits]

Great information! Thanks for imparting your knowledge on iSCSi while giving my eyes something to SCSi 🤓

[@BillMac1966]

I'd love to see you do an episode on multipath with iSCSI and 2 Proxmox nodes.

[@VirtualizationHowto]

Deadwing, will keep that one in mind!

[@jimholloway1785]

@@VirtualizationHowto I also would like to see this, I have setup two Proxmox servers and want to utilize my Sinology's to handle all storage and would love to see how you could create shared storage on the synology and then access it from both Proxmox servers at the same time.

[@xandrios]

I second this. Too little information about MPIO out there. And I would suggest doing both iSCSI and NFS, where NFS is likely the easiest option for most.

[@symosys]

Thank you for posting this. i have ISCI lun on a Synology which was attached to my old Intel Mac mini so we could share the old iPhoto libraries. This required licensed software which I have but Mac OS no longer supports. I have a Proxmox cluster so can now try to get access to the files.

[@RonGabriel]

very helpful thank you. am I the only that noticed the doggo in the backround? lol

[@VirtualizationHowto]

:) @rongabriel good catch!

[@mzambo666]

Great helpful video. I m using NFS with the Synology. Thank you

[@chenxuewen]

太好了，最近正在测试PVE，刚好我也有个黑裙NAS🤣

[@resonanceofambition]

Instead of messing around with VLANs and such, since I'm not that far yet, would it be okay to just connect the second port of my Synology NAS to a secondary port on my Proxmox blade? As far as I know I'm fully VLAN capable (HP DL360 g9, HP j9980a layer 2 switch) but I just want to avoid complex stuff as much as I can because this network isn't just a homelab, it's also what I use when coming back home from work tired to watch some series and such. Don't want too many abstraction layers hindering peace and tranquillity after work. Edit: It seems to work. Important is the "Line of sight" and making sure that both devices are on the same network.

[@jimholloway1785]

I was finally able to do this, I did not realize I needed a 2nd nic connection and was trying to do this with the single nic on my Lenovo M900 tiny, but I was able to plug in a usb-nic adapter and was able to get the 2nd connection and then the rest of your steps worked great. Is there anyway to not add a 2nd nic ?? THANK YOU so much, I was trying a couple things but I think you got me going in the right direction now, I will know tomorrow when I have more time to really test this.

[@dimitristsoutsouras2712]

Adding the iscsi in proxmox has the bug you mentioned. Nothing is using the volume you either wait or delete and recreate or reboot and you ll see the iscsi appear in the gui.

[@orkhanzulfugarov1307]

Thanks for the information!

[@VirtualizationHowto]

Any time!

[@brave.circassian77]

thnx ser!!!

[@chokfulla]

Very helpful. Thank you, sir.

[@VirtualizationHowto]

Glad it was helpful!

[@jaimecabrera8102]

Great video, thanks.

[@atem18]

To have it working, I had to login in SSH and apt install open-iscsi. You can verify if it's the issue for you with pvesm status

[@pserif]

Thank you 👋

[@TheRealWattsie]

Just my $0.10, I came across the same "already used by volume" error, I simply used "wipefs --all --backup /dev/sda" then was able to create lvm.

[@joestillwell6789]

When I tried setting this up I saw three disks instead of one also. Installing multipath didn't work for me. I had to disable ipv6 on the Synology NIC that I dedicated to iSCSI and that resolved things for me. Just thought I would share in case anyone is having a similar problem.

[@Foars989]

what's the reason why we don't use LUNs directly?

[@ipstacks11]

You didn't mention you have separate layer 2 networks, one for iscsi and one for other network stuff. I just happen to notice your iscsi interface was set to jumbo frames and your other network interface was at 1500. I was just thinking that was worth a mention. Also pictures say a lot when you are explaining networking, but it's your video and not mine. In proxmox maybe they are separate bridges connected to separate switches or directly attached to the SAN. Either way you must be using separate physical interfaces as you leave the proxmox box.

[@VirtualizationHowto]

@ipstacks11, thank you for the comment! Please share some of your expertise and experiences over on the forums here: www.virtualizationhowto.com/community. Thank you again.

[@fcodxdart1083]

Is there a way to scan the target to find newly created LUNs? I had to restart the host to get the new LUN to show up.

[@IbrahimALMashaleh-gs3it]

Hi there I have the same setup with clustered 4 nodes ; 2 can see the lvm and 2 are not , can you support in troubleshooting this case ? thanks in advance.

[@thiagojosegolin5609]

Greath Video, Man!

[@mahmood1212]

Great video. 🐾🐾 :)

[@midnightwatchman1]

good work

[@ozb2006]

hi can you show how to do pci passthrough on a hba card?

[@Piotr_T]

Hello. Is that possible to expand synology storage by mounting nfs or iscsi target on proxmox/truenas?

[@VirtualizationHowto]

@Piotr_T thank you for the comment! Can you join up on the forums and we can discuss further? www.virtualizationhowto.com/community

[@antenehasnake8271]

Does Promox support SAN FC Interfaces and Storgae Mapping, If So kindly provide links.

[@landychev]

Yes it does, i have been running an old NETAPP DS14-MK2-FC (loud as hell) connected directly to a proxmox server with fc adapter. Just make sure to fix the disk to be 512 instead of (netapp)520 blocksize

[@antenehasnake8271]

@@landychev Kindly provide links i can refere if possible?

[@fbifido2]

why iSCSI over NFSv4 ???

[@VirtualizationHowto]

I tend to prefer block storage over file-level storage for virtualized workloads

[@fbifido2]

@@VirtualizationHowto did not know about the multi-path-tool, i figured it will just work or auto enable with two or more NICs

[@xandrios]

@@VirtualizationHowtoWhy is that? In my mind block devices, running over the network, are much more susceptible to data corruption if there is a networking issue. NFSv4.1 now also supports multipathing which allows using fairly basic networking equipment and still get redundancy.