ISCSI disk for backup

[Blisk]

I am trying to add ISCSI disk for backup. I can add it under storage, but than I try to add it in LVM there is not possible.
SMP PVE 5.15.143-1 (2024-02-08T18:12Z) x86_64

ls -l /dev/disk/by-id/
lrwxrwxrwx 1 root root 9 Mar 18 08:32 ata-PLDS_DVD+_-RW_DS-8A5SH_108240292611 -> ../../sr0
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-name-disk2tba-vm--100--disk--0 -> ../../dm-0
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-name-disk2tba-vm--101--disk--0 -> ../../dm-1
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-name-disk2tba-vm--102--disk--0 -> ../../dm-3
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-name-disk4tba-vm--100--disk--0 -> ../../dm-7
lrwxrwxrwx 1 root root 10 Mar 18 08:32 dm-name-pve-root -> ../../dm-4
lrwxrwxrwx 1 root root 10 Mar 18 08:32 dm-name-pve-swap -> ../../dm-2
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-uuid-LVM-03tlKNYPNcasB8qibS2wn0VYb5n083Kh1DfclqEjgiKwW38jwtA3EBcpT0pokbjR -> ../../dm-1
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-uuid-LVM-03tlKNYPNcasB8qibS2wn0VYb5n083KhlHH0cWu0iOyC6jdf7buJ6EcItBZY4Vpf -> ../../dm-3
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-uuid-LVM-03tlKNYPNcasB8qibS2wn0VYb5n083Khu5pz3zOhxkOxH21jy6QJ6pYyarAJRQzZ -> ../../dm-0
lrwxrwxrwx 1 root root 10 Mar 18 08:32 dm-uuid-LVM-3LaDGiayzh4Ef0JghFPfYU12IW1KfflgLs28FZNal2NQr8PiulgdSqWmfy5W9sxX -> ../../dm-4
lrwxrwxrwx 1 root root 10 Mar 18 08:32 dm-uuid-LVM-3LaDGiayzh4Ef0JghFPfYU12IW1KfflgyK4BYlp3zKq2MzOkv6i7YGjc8l4R0n2T -> ../../dm-2
lrwxrwxrwx 1 root root 10 Mar 18 08:34 dm-uuid-LVM-TJfSfUsxsIaKPUIiVGVn5fBxq1TxpTguGp7D8nkj6uHPHcHYdeSfndFAKueqPUDO -> ../../dm-7
lrwxrwxrwx 1 root root 9 Mar 18 08:33 lvm-pv-uuid-0mP7BN-cCg3-bZGd-Cdk5-qGbJ-YiOf-ehIhTr -> ../../sdb
lrwxrwxrwx 1 root root 9 Mar 18 08:33 lvm-pv-uuid-gFRekp-qAr7-ejtH-ie68-kiAE-Tzsz-8BjoCh -> ../../sda
lrwxrwxrwx 1 root root 10 Mar 18 08:33 lvm-pv-uuid-QNIhMc-Udzn-jC4w-DSMY-D0bt-1Vkg-0eK8X4 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Mar 18 08:33 scsi-36782bcb075821300ff00009108d9cc61 -> ../../sdb
lrwxrwxrwx 1 root root 9 Mar 18 08:33 scsi-36782bcb075821300ff00009108da824f -> ../../sda
lrwxrwxrwx 1 root root 9 Mar 18 08:33 scsi-36782bcb075821300ff00009108da8643 -> ../../sdc
lrwxrwxrwx 1 root root 10 Mar 18 08:33 scsi-36782bcb075821300ff00009108da8643-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Mar 18 08:33 scsi-36782bcb075821300ff00009108da8643-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Mar 18 08:33 scsi-36782bcb075821300ff00009108da8643-part3 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108d9cc61 -> ../../sdb
lrwxrwxrwx 1 root root 9 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108da824f -> ../../sda
lrwxrwxrwx 1 root root 9 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108da8643 -> ../../sdc
lrwxrwxrwx 1 root root 10 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108da8643-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108da8643-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Mar 18 08:33 wwn-0x6782bcb075821300ff00009108da8643-part3 -> ../../sdc3

 

[gfngfn256]

For base volume you need to select a LUN

FYI: iSCSI is a block-level storage by definition, so the LVM must be placed on a LUN, which has been exported by the target.
See docs:

"iSCSI is a block level type storage, and provides no management interface. So it is usually best to export one big LUN, and setup LVM on top of that LUN. You can then use the LVM plugin to manage the storage on that iSCSI LUN".

 

[Blisk]

For base volume you need to select a LUN

FYI: iSCSI is a block-level storage by definition, so the LVM must be placed on a LUN, which has been exported by the target.
See docs:

thank you I will try to do that

 

[Blisk]

I manage to found lun but I get now error

 

[gfngfn256]

Don't know the history of this iSCSI drive / LUN - are you presently using it for something else?
If its historic I believe you need to use wipefs , see here & here

DISCLAIMER: I'VE NEVER USED IT - USE AT YOUR OWN DISGRETION - ALWAYS HAVE BACKUPS

 

[Blisk]

Don't know the history of this iSCSI drive / LUN - are you presently using it for something else?
If its historic I believe you need to use wipefs , see here & here

DISCLAIMER: I'VE NEVER USED IT - USE AT YOUR OWN DISGRETION - ALWAYS HAVE BACKUPS

I never used this and on first link was what I need to do this and now I made LVM for ISCSI, but when I try to add it in backup section still not visible.
What I need more to do?

 

[gfngfn256]

On an LVM you cannot store Backups.

Look in Datacenter , Storage to see what Storage types are available.


Edit: If you really want to use the iSCSI for backups, you'll only be able to do it through an LV (formatted with FS) - and then add it as a Directory type Storage for Backup types.

Its rather complicated - I don't know your PVE / Linux experience level. But maybe start with this general Storage Docs - and then see this from forum.

 

[Blisk]

this is what I have in storage
I will check links thank you.

 

[Blisk]

I finally found out why was connection to ISCSI that big problem.
It is some bug in proxmox. When I remove all vmbr and create it again than I can see and connect ISCI