Disk partitioning management

Martin Nitram

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May 22, 2015, 4:57:33 PM5/22/15

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Hi list!

I've looking around for a simple way to administer disks with salt.

As we are using AWS, I've created an instance with a provisioned volume, and I was wondering if there is some way to make use of it.

All I found googling around was this two questions (here at the salt-users group):

https://groups.google.com/forum/#!searchin/salt-users/disk$20format/salt-users/YykA7PpeAh8/uMzHautk3OoJ

https://groups.google.com/forum/#!searchin/salt-users/disk$20partition/salt-users/4CyUC1Rlako/D1hyqGbkN7UJ

The second one is exactly what I'm looking for.

Figured out how to do some volume management with salt.states.lvm (http://docs.saltstack.com/en/latest/ref/states/all/salt.states.lvm.html), but as for the partitioning part, all I see are cmd.run & unless options.

Is there a better or salt native way to manage them? How do you do it?

Thanks!

Martin

Colton Myers

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May 28, 2015, 4:14:24 PM5/28/15

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There's also the parted module for managing partitions: http://docs.saltstack.com/en/latest/ref/modules/all/salt.modules.parted.html#module-salt.modules.parted

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Colton Myers

Platform Engineer, SaltStack

@basepi on Twitter/Github/IRC

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Martin

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May 30, 2015, 12:07:32 AM5/30/15

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Hi Colton,

I saw that module, but - let me know if I'm wrong - you can't use it in a sls, right?

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Florian Ermisch

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May 30, 2015, 10:00:19 AM5/30/15

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Hi Martin,

you're right, it's an execution module, not a state module.
But after a quick glance over the module's docs I would say there's everything one needs to build a state module on top of the existing exec mod.

Regards,Florian

Martin

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May 31, 2015, 8:03:07 PM5/31/15

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Hi all,

After some time googling and reading, finally got a good enough method for partition, or at least to add another disk (which is my scenario).

Here is what I've done so far:

/dev/sdg:

lvm.pv_present

test_vg:

lvm.vg_present:

- devices: /dev/sdg

- require:

- lvm: /dev/sdg

test_data:

lvm.lv_present:

- vgname: test_vg

- size: 4G ## This is bad! :( . No '-l +100%FREE' allowed

- require:

- lvm: test_vg

/dev/dm-0: #### This made the trick

blockdev.formatted:

- fs_type: ext4

- require:

- lvm: test_data

/var/lib/mytest:

mount.mounted:

- device: /dev/dm-0

- fstype: ext4

- mkmnt: True

- persist: True

- user: foo

- opts:

- defaults

- require:

- blockdev: /dev/dm-0

file.directory:

- user: foo

- group: foo

- dir_mode: 755

It would be really nice if there were an option to use '-l +100%FREE' instead of a fixed size in lvm, but I can live without it.

Martin

bkcsfi sfi

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Jul 7, 2016, 8:06:51 PM7/7/16

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Regarding 100%FREE, with salt 2016.3.1 and Ubuntu 16.04 minion, I modified your above example as shown below.

Specifying extents: 100%FREE worked

Note that lvm_data_disk is a minion grain whose value is /dev/sdb

# lvm_disk/init.sls
{% set device = grains['lvm_data_disk'] %}
{{ device }}:
lvm.pv_present
data_vg:
lvm.vg_present:
- devices: {{ device }}
- require:
- lvm: {{ device }}
data:
lvm.lv_present:
- vgname: data_vg
- extents: 100%FREE
- require:
- lvm: data_vg
/dev/data_vg/data: #### This made the trick

blockdev.formatted:
- fs_type: ext4
- require:

- lvm: data
/data:
mount.mounted:
- device: /dev/data_vg/data

- fstype: ext4
- mkmnt: True
- persist: True

- user: root

- opts:
- defaults
- require:

- blockdev: /dev/data_vg/data
file.directory:
- user: root
- group: root
- dir_mode: 755

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