Persistent device names under Ubuntu Lucid LTS Server

[Joseph Salisbury]

On 01/14/2011 11:11 AM, carlopmart wrote:
> On 01/13/2011 08:07 PM, Joseph Salisbury wrote:
>> On 01/13/2011 12:32 PM, carlopmart wrote:
>>> On 01/13/2011 06:14 PM, Joseph Salisbury wrote:
>>>> On 01/13/2011 11:40 AM, carlopmart wrote:
>>>>> Hi all,
>>>>>
>>>>>    How can I configure persistent name for an iscsi disk that i have
>>>>> attached to an ubuntu lucid server??
>>>>>
>>>>>    For example, under RHEL5.x releases, I have created an udev rule
>>>>> files
>>>>> with this content:
>>>>>
>>>>>    KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",
>>>>> RESULT=="1IET_00020001", SYMLINK+="isda%n"
>>>>>
>>>>>    How can I do this with Ubuntu Lucid Server??
>>>>>
>>>>>    Thanks.
>>>>
>>>> Hello,
>>>>
>>>> Are you using multipathing?  If so, you can create an alias using the
>>>> WWID for the iscsi volume.  For example, you can add a section in
>>>> /etc/multipath.conf like the following:
>>>>
>>>> multipaths {
>>>>           multipath {
>>>>                   wwid                    THE_VOLUMES_WWID
>>>>                   alias                   THE_PERSISTANT_NAME_YOU_WANT
>>>>                   OTHER_OPTIONS_GO_HERE
>>>>           }
>>>> }
>>>>
>>>> Joe
>>>>
>>>
>>> No, I am not using multipath...
>>>
>>
>> One option would be to use LVM2.
>>
>> Also, you could also refer to the UUID in the path:
>> /dev/disk/by-uuid/UUID_FOR_ISCSI_VOLUME (Maybe eve create more
>> understandable sym-links to these UUIDs).
>>
>> If you do that, you can modify your /etc/fstab file and replace the
>> device name in the first column with the new persistent name. For
>> example, replace /dev/sdaN with the following:
>>
>> /dev/disk/by-uuid/UUID_FOR_ISCSI_VOLUME
>>
>> This would be done for all the iSCSI volumes referenced in your fstab
>> file.
>>
>> I believe you could also list the device in the fstab with
>> UUID=UUID_FOR_ISCSI_VOLUME vs having the entire path.  Something to test.
>>
>> Another option would be to use labels and replace the device name with:
>> /dev/disk/by-label/LABLE_NAME or LABLE=LABLE_NAME.
>>
>> HTH,
>>
>> Joe
>>
>>
> 
> Thanks Joseph .. It works ... But i have another problem. When I try to
> shutdown the server, open-iscsi never stops ... Is this a bug in
> open-iscsi package ??
> 
> 
> 
Can you provide some additional details?  How are you shutting down the
server?  Are you using the shutdown command?

Can you provide some messages from your log files(/var/log/syslog and/or
/var/log/kern.log).  Is the server not shutting down because open-iscsi
is not stopping?  Can you provide any errors you are seeing?

Thanks,

Joe