> I have just run across this problem as well.

This apparently wasn't a problem? - Kevin was detaching auto-attached
volumes by hands.
> When I terminated the farm, I selected to keep the EBS volumes,
> however, when the farm terminated, the volumes completely disappeared
> and had to be re-created on boot.  This also happened when I did a
> "synchronize to all" on the instance.  This defeats the purpose of
> EBS... and really screws up the ability to keep a persistent copy of
> up-to-the-minute data, which makes it impossible to keep logfiles or
> run applications that change their state (like users uploading images,
> etc).  I don't see anything in the logs regarding the volumes being
> deleted.  The farm id in question is 959 if that helps.


Do you know IDs of volumes that disappeared?
Can you help us to reproduce this?
Thanks alot.


On 12.12.08 01:23, "jmochs" <[email protected]> wrote:

> 
> I have just run across this problem as well.
> 
> When I terminated the farm, I selected to keep the EBS volumes,
> however, when the farm terminated, the volumes completely disappeared
> and had to be re-created on boot.  This also happened when I did a
> "synchronize to all" on the instance.  This defeats the purpose of
> EBS... and really screws up the ability to keep a persistent copy of
> up-to-the-minute data, which makes it impossible to keep logfiles or
> run applications that change their state (like users uploading images,
> etc).  I don't see anything in the logs regarding the volumes being
> deleted.  The farm id in question is 959 if that helps.
> 
> Thanks,
> James
> 
> On Dec 11, 2:56 pm, Kevin Baker <[email protected]> wrote:
>> On Dec 11, 2008, at 3:53 PM, Kevin Baker <[email protected]> wrote:
>> 
>> 
>> 
>> 
>> 
>>> On Dec 10, 2008, at 9:52 AM, Alex Kovalyov <[email protected]>  
>>> wrote:
>> 
>>>> Dear Kevin,
>> 
>>>> We've spend few hours analyzing your logs and came to conclusion  
>>>> that you
>>>> were detaching volumes that Scalr attaches for you automatically and
>>>> attaching another one manually.
>>>> Is this a right conclusion?
>> 
>>> Thank you tons for taking the time. Yes this the correct conclusion.  
>>> However I am trying to setup a confit very similiar to Ken M.
>> 
>>> I want myEBSTo automatically remount to an instance. The snapshot  
>>> is fine for backups, but the goal is to use the inherant data  
>>> persistance features of theEBS. This would require binding anEBS 
>>> to a role and having any new instances scalr boots to a role check  
>>> for orphanedEBSinstances.
>> 
>>> I was understanding
>> 
>> Oops, hut the send button ;)
>> 
>> It was my understanding. From the scalr role wizard that this was  
>> standard  behavior.
>> 
>> 
>> 
>>>> If you want some particular volume to be attached, just make a  
>>>> snapshot of
>>>> it, and choose " Attach volume from snapshot:" onEBStab.
>> 
>>>> On 10.12.08 17:45, "Kevin Baker" <[email protected]> wrote:
>> 
>>>>> I will be retesting with a fresh image today, and will update this
>>>>> thread.
>> 
>>>>> On Dec 10, 2008, at 1:21 AM, Sam <[email protected]> wrote:
>> 
>>>>>> This is worrying as my application heavily rely on the  
>>>>>> application to
>>>>>> attach to the already existingEBSand if it attaches newEBS
>>>>>> everytime my application will fail.
>>>>>> Kevin, did you recently checked this after a few problems were  
>>>>>> fixed
>>>>>> related toEBS?
>> 
>>>>>> On Dec 9, 7:28 pm, Kevin Baker <[email protected]> wrote:
>>>>>>> Alex,
>> 
>>>>>>> I have had anEBSinstance attach successfully each time, however
>>>>>>> it is
>>>>>>> always a newEBSinstance.
>> 
>>>>>>> It goes something like this:
>> 
>>>>>>>   * CreateEBS
>>>>>>>   * Format and attach to Instance
>>>>>>>   * restart instance
>>>>>>>   * newEBSis created
>>>>>>>   * PreviousEBSis orphaned
>> 
>>>>>>> So each time I have anEBS, but just not the previous one.
>> 
>>>>>>> Alex Kovalyov wrote:
>>>>>>>> We've checked your log and found all attach and mount attempts
>>>>>>>> successful.
>>>>>>>> Please provide more details.
>> 
>>>>>>>> On 8 дек, 22:55, Kevin Baker <[email protected]> wrote:
>> 
>>>>>>>>> So would this apply to anyEBSthat would have been attached on
>>>>>>>>> startup?
>> 
>>>>>>>>> I have anEBSon my MySQL instance that has not been  
>>>>>>>>> automatically
>>>>>>>>> reattaching on restart.
>> 
>>>>>>>>> Alex Kovalyov wrote:
>> 
>>>>>>>>>> Confirmed - this was a bug  on our side (fixed).
>> 
>>>>>>>>>> We weren't checking that attachmentSet->status is 'attached'
>>>>>>>>>> before
>>>>>>>>>> initiating a volume mount on instance, only checked volume
>>>>>>>>>> status to
>>>>>>>>>> be "in-use".
>> 
>>>>>>>>>> On 8 дек, 11:59, Sam <[email protected]> wrote:
>> 
>>>>>>>>>>> I have anEBSstorage attached to my app instance. I have  
>>>>>>>>>>> mkdir
>>>>>>>>>>> fjstorage on application server and then created 2 symlinks to
>>>>>>>>>>> store
>>>>>>>>>>> the local files on the server. Then I terminated and
>>>>>>>>>>> synchronised the
>>>>>>>>>>> farm and restarted the farm. Everything worked fine. I stopped
>>>>>>>>>>> the
>>>>>>>>>>> farm on friday and then restarted it today.
>>>>>>>>>>> Everything else is fine on the app server but the /fjstorage
>>>>>>>>>>> directory
>>>>>>>>>>> whereEBSis to be mounted does not exist.
>>>>>>>>>>> My settings forEBSin the app server role was to create 10GB
>>>>>>>>>>> storage
>>>>>>>>>>> and attach it automatically to /fjstorage directory on the app
>>>>>>>>>>> server.
>>>>>>>>>>> I had similar problem before which I was told that they had
>>>>>>>>>>> fixed it.
>>>>>>>>>>> This is again happening.
>>>>>>>>>>> Could you please help urgently as we are going to put an
>>>>>>>>>>> application
>>>>>>>>>>> live this week and this sort of problem withEBSstorage
>>>>>>>>>>> defnitely
>>>>>>>>>>> won't help.
> 
> > 



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