[jira] [Commented] (CLOUDSTACK-6181) Root resize

["Nux (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-6181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14228496#comment-14228496 ] 

Nux commented on CLOUDSTACK-6181:
---------------------------------

Managed to corrupt a VM's disk today by live resizing it; it was a just a test VM. 
Wonder if this is something we wished to prevent in the code or just make people aware of it? It may not be obvious to everyone resizing it on the fly while the VM is running will cause corruption.

> Root resize
> -----------
>
>                 Key: CLOUDSTACK-6181
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-6181
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Hypervisor Controller, Storage Controller, UI
>    Affects Versions: 4.4.0
>         Environment: KVM/libvirt/CentOS, Xenserver
>            Reporter: Nux
>              Labels: disk, resize, template
>             Fix For: 4.4.0
>
>
> Rationale:
> Currently the root size of an instance is locked to that of the template. This creates unnecessary template duplicates, prevents the creation of a market place, wastes time and disk space and generally makes work more complicated.
> Real life example - a small VPS provider might want to offer the following sizes (in GB):
> 10,20,40,80,160,240,320,480,620
> That's 9 offerings.
> The template selection could look like this, including real disk space used:
> Windows 2008 ~10GB
> Windows 2008+Plesk ~15GB
> Windows 2008+MSSQL ~15GB
> Windows 2012 ~10GB
> Windows 2012+Plesk ~15GB
> Windows 2012+MSSQL ~15GB
> CentOS ~1GB
> CentOS+CPanel ~3GB
> CentOS+Virtualmin ~3GB
> CentOS+Zimbra ~3GB
> CentOS+Docker ~2GB
> Debian ~1GB
> Ubuntu LTS ~1GB
> In this case the total disk space used by templates will be 828 GB, that's almost 1 TB. If your storage is expensive and limited SSD this can get painful!
> If the root resize feature is enabled we can reduce this to under 100 GB.



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