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From "Alex Huang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CLOUDSTACK-251) If one primary storage is put into maintenance mode, entire cloud goes down. CS 3.02
Date Wed, 03 Oct 2012 20:00:09 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468778#comment-13468778
] 

Alex Huang edited comment on CLOUDSTACK-251 at 10/4/12 6:59 AM:
----------------------------------------------------------------

This is a bad bug.  We should prioritize this fix.  A storage in maintenance mode taking down
the cloud doesn't make sense.  I've raised the priority of this to critical.
                
      was (Author: alexhuang):
    This is a bad bug.  We should prioritize this fix.  A storage in maintenance mode taking
down the cloud doesn't make sense.
                  
> If one primary storage is put into maintenance mode, entire cloud goes down. CS 3.02
> ------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-251
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-251
>             Project: CloudStack
>          Issue Type: Bug
>          Components: Storage Controller
>         Environment: Cloudstack 3.02 on Centos, Xenserevr 6.2 Hypervisors
>            Reporter: Nik Martin
>            Priority: Critical
>              Labels: storage
>
> I have two SANs in a cluster, both are Primary storage.  One is HD based,and one is SSD
based.  I use storage tags "HD" and "SSD" respectively.  The HD based SAN is a single 20TB
volume, with 1 iSCSI target, and 1 LUN.  The SSD SAN is two 5TB volumes, each with 1 target,
and 1 LUN each, in an Active-Active configuration.  The SSD SAN suffered from a mis-configuration
issue, so we had to put it into maintenance mode in a hurry, and shut it down.  I fully expected
the Volumes and VMs provisioned on the SSD SAN to be unavailable.  The problem is Cloudstack
continued to try to access Volume id 204, which is Target0 on the SSD san.  It shut every
VM down, and put all Hypervisors into Alert state, and went into a loop trying to connect
to a volume that is in maintenance mode.  This creates a very bad situation for me and my
customers. My entire cloud was offline until we could re-synchronize the Active-Actibve volumes
on the SSD SAN and bring it back online

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