using the storage promise

[Gregory Matthews]

I've just been playing around with the "storage" promise, we have been
using in-house code to edit /etc/fstab until now.

It works quite well but I was surprised by the fact I couldn't pass
double quotes in the options:

"/mnt" mount => nfs_p("host", "/path",
"context=\"unconfined_u:object_r:postgresql_db_t:s0\"");

(beware of line wrap above)

in this case the literal \" ends up in the fstab. I tried removing the
escape character and replacing the enclosing quotes with singles but
that also put \" into the fstab.

single quotes in the fstab are also illegal. In the end, I was able to
do away with quotes entirely but thought I'd mention it in case there is
a case where quotes are necessary.

I also found that I had to remove the lines from fstab entirely to get
any changes through - ie. changes to mount options were not propogated
to the fstab. Don't know if this is intentional.

Using 3.10 with the provided storage.cf body library.

GREG
--
Greg Matthews 01235 778658
Scientific Computing Group Leader
Diamond Light Source Ltd. OXON UK

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[Neil H. Watson]

On Wed, Oct 04, 2017 at 05:44:15PM +0100, Gregory Matthews wrote:
>It works quite well but I was surprised by the fact I couldn't pass
>double quotes in the options:
>
>"/mnt" mount => nfs_p("host", "/path",
>"context=\"unconfined_u:object_r:postgresql_db_t:s0\"");

' and " are interchangeable, in pairs, in CFEngine. Thus:

'context="unconfined_u:object_r:postgresql_db_t:s0"');

--
Neil H Watson @neil_h_watson
CFEngine reporting: https://github.com/neilhwatson/delta_reporting
CFEngine policy: https://github.com/neilhwatson/evolve_cfengine_freelib
CFEngine and vim: https://github.com/neilhwatson/vim_cf3