On Feb 26, 2010, at 11:28 AM, Marcin Owsiany wrote:
On Thu, Feb 25, 2010 at 06:13:12PM +0100, Daniel wrote:
On Thu, Feb 25, 2010 at 6:05 PM, Luke Kanies
<[email protected]> wrote:
On Feb 25, 2010, at 12:13 AM, Marcin Owsiany wrote:
On Wed, Feb 24, 2010 at 09:24:55AM -0800, Luke Kanies wrote:
Or should we maybe skip the filesystem type entirely and just
initialize
the volume as a given filesystem when the volume itself is
created?
E.g., something like:
logical_volume { foo: vg => bar, fs => ext3, ensure => present }
So when you create the lv, you initialize the fs, but otherwise
you
don't mess with it.
Makes sense, although you should not get rid of the FS type. It
will
still be useful for changing filesystem type (including online
migration
between compatible filesystems like ext2->ext3).
Is there, then, a consistent, safe way to determine the filesystem
type?
Maybe file i another option can help.
# file -s /dev/mapper/rootvg-tmplv
/dev/mapper/rootvg-tmplv: ReiserFS V3.6 block size 4096 (mounted or
unclean) num blocks 128000 r5 hash
That's also approximately the method I used in my provider for the
filesystem type.
I'm not sure if this works when the superblock is corrupt. Maybe i
can
do some testing on this subject
I'm not sure it matters. There could always be a situation where your
filesystem is broken enough for file/mount/kernel to not be able to
recognize it, but for the data to still be in a recoverable state (at
least partially). The point is that we don't want puppet to do
anything
harmful (like recreate the filesystem) in that case. Then again I
don't
know if there is anything that you can do to a filesystem without
potentially harming it..
This sounds basically intractable - there's no dependable way to know
if there's a filesystem in place, which to me means there's no way to
know if we should create a filesystem. Right?
Even recording the fact that we've created an FS before isn't
foolproof - if someone removes the state.yaml file, we lose that
recorded information.
--
Experience is the name everyone gives to their mistakes.
-- Oscar Wilde
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Luke Kanies -|- http://reductivelabs.com -|- +1(615)594-8199
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