[SOLVED] Proxmox 7 ISCSI Multipath Dell me5084

[Alfio]

Hello, I have three servers which I am going to install with version 7.3 of Proxmox, the storage is Dell PowerVault ME5 me5084 and I want to configure ISCSI multipath, although I have seen the wiki there are things that are not clear to me, if you could show me a files examples with some dell storage that is working and what are the files to configure additional to the multipath.conf I would greatly appreciate it.

Thanks in advanced.

 

[bbgeek17]

There are no files to configure, other than multipath conf.
The order of operations is pretty straightforward: configure iscsi on one node, confirm you see LUN via multiple paths, configure multipath, repeat on other nodes. Place thick LVM, cluster filesystem of your choice, or use LUN per virtual disk method.

With all the documentation out there, You are always better of asking a specific question if you are stuck.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[Alfio]

Ok, thanks for your quick response, let me rephrase my question then, does anyone have an example of a multipath configuration file for a working Dell storage that they can share with me?

Thanks in advance.

 

[rason]

Ok, thanks for your quick response, let me rephrase my question then, does anyone have an example of a multipath configuration file for a working Dell storage that they can share with me?

Thanks in advance.

You might find the following URL useful: https://www.dell.com/support/kbdoc/en-us/000124601/me4-md-series-combined-linux-mpio-multipath-conf (config for Dell ME5 at the very bottom of the page)

 

[Alfio]

You might find the following URL useful: https://www.dell.com/support/kbdoc/en-us/000124601/me4-md-series-combined-linux-mpio-multipath-conf (config for Dell ME5 at the very bottom of the page)

Thank you, i will mark as solved this thread, i did the following:

In /etc/iscsi/iscsid.conf

Change those settings

node.startup = automatic
node.session.timeo.replacement_timeout = 15

Install multipath-tools

# apt-get update
# apt-get install multipath-tools

In my case i have Dell EMC M5 version

in /etc/multipath.conf

##Default System Values
defaults {
user_friendly_names yes
find_multipaths yes
max_fds 8192
polling_interval 5
queue_without_daemon no
}

## Blacklist Exceptions
blacklist_exceptions {
device {
vendor "DellEMC"
product "ME5"
}

}
## Dell Device Configuration
devices {
device {
vendor "DellEMC"
product "ME5"
path_grouping_policy group_by_prio
path_checker "tur"
hardware_handler "1 alua"
prio "alua"
failback immediate
rr_weight "uniform"
path_selector "service-time 0"
}
}

Later execute:

systemctl restart multipath-tools.service

You can check with the following command:

multipath -ll

mpathc (3600c0ff00066487d95dd986301000000) dm-4 DellEMC,ME5
size=127T features='0' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 11:0:0:1 sde 8:64 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
`- 12:0:0:1 sdc 8:32 active ready running
mpathd (3600c0ff00066487db4dd986301000000) dm-3 DellEMC,ME5
size=99T features='0' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 11:0:0:0 sdd 8:48 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
`- 12:0:0:0 sdb 8:16 active ready running
root@srv01:~#

And do the following to get the multipath tools to start at new reboot:

systemctl enable multipath-tools.service


Thanks for your help.