[PVE-User] (Unsupported) SoftRAID on multipath

Eneko Lacunza elacunza at binovo.es
Tue Nov 26 09:58:37 CET 2013


Hi Gilles,

On 26/11/13 01:34, Gilles Mocellin wrote:
>>
>> We have a Proxmox node with a directory storage:
>>      - The directory is a mountpoint for a SoftRAID (RAID1) device, 
>> with 2 devices. (md0)
>>         * Device one is a local disk (sdb)
>>         * Device two is a multipath network iSCSI disk (dm-3)
>>
>> When the server boots up, md0 is degraded because it couldn't find dm-3.
>>
>> I have looked to mdraid and multipath init scripts and it seems that 
>> multipath is trying to start multipath devices before networking is up.
> You should force multipath to run (or re-run) after open-iscsi is 
> started.
> I would try to add a boot dependandcy in /etc/init.d/multipath-tools, 
> to start after open-iscsi.
> Same thing with /etc/init.d/mdadm-raid, to start after multipath-tools.
>
Multipath seems to re-run after network is up, but I don't have any 
dm-related log in dmesg after networking is up, so it seems mdadm problem.

Thanks
Eneko

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