Re: Mounting /mnt to another volume

[Kevin Menard]

Hi Adam,

How do you mean that /mnt was already defined by rubber?  I routinely mount /mnt to an LVM volume across either EBS or ephemeral stores.

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Kevin

Adam Nelson

Thursday, November 29, 2012 5:32 PM

I would like to mount /mnt to an EBS volume and although I have been successful with mounting folders like /tmp to EBS volumes via the rubber.yml file, it appears to be impossible to use that method to move the /mnt folder since it was already defined by rubber.

Has anybody been able to do this successfully?  My goal is to use volatile storage for /tmp and EBS for /mnt.

Cheers,

Adam

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[Adam Nelson]

Kevin,

I see how that would work for volumes inside of /mnt as per the example in rubber.yml, but I'm trying to do this with /mnt itself:

---- my rubber.yml ---

roles:

  my_role:

    availability_zone: us-west-1b

    volumes:

      - size: 100 # size of vol in GBs

        zone: us-west-1b # zone to create volume in, needs to match host's zone

        device: /dev/sdh # OS device to attach volume to

        mount: /mnt # The directory to mount this volume to

        mount_opts: defaults

        filesystem: ext4 # the filesystem to create on volume    

--- Resulting instance ---

ubuntu@staging-encode2:~$ df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/xvda1      7.9G  1.9G  5.7G  25% /

udev            3.4G  8.0K  3.4G   1% /dev

tmpfs           1.4G  172K  1.4G   1% /run

none            5.0M     0  5.0M   0% /run/lock

none            3.4G     0  3.4G   0% /run/shm

/dev/xvdb       414G  199M  393G   1% /mnt

As you can see, /mnt mounts to /dev/xvdb making it unavailable for /tmp.  

If I change /mnt in rubber.yml above to /tmp, I get this in my instance.  You can see that /mnt is auto-mounted by Rubber:

ubuntu@staging-encode2:~$ df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/xvda1      7.9G  1.9G  5.7G  25% /

udev            3.4G  8.0K  3.4G   1% /dev

tmpfs           1.4G  172K  1.4G   1% /run

none            5.0M     0  5.0M   0% /run/lock

none            3.4G     0  3.4G   0% /run/shm

/dev/xvdb       414G  199M  393G   1% /mnt

/dev/xvdh        99G  188M   94G   1% /tmp

[Madhan Padmanabhan]

Hey Kevin,

Were you able to find a solution for this?

[Kevin Menard]

Solution for what?  I admin I didn't see Adam's email.  But as I stated, I'm able to mount /mnt directly.  What problem are you having?

 

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Kevin

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