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What seems to be strange is that feature are all disabled
when I create some images.
While ceph should use default settings of jewel at least.
Do I need to place in ceph.conf something in order to use default
settings?
Il 23/06/2017 23:43, Massimiliano
Cuttini ha scritto:
I guess you updated those feature before the commit that fix
this:
https://github.com/ceph/ceph/blob/master/src/include/rbd/features.h
As stated:
// features that make an image inaccessible for read or write by
/// clients that don't understand them
#define RBD_FEATURES_INCOMPATIBLE (RBD_FEATURE_LAYERING | \
RBD_FEATURE_STRIPINGV2 | \
RBD_FEATURE_DATA_POOL)
/// features that make an image unwritable by clients that don't understand them
#define RBD_FEATURES_RW_INCOMPATIBLE (RBD_FEATURES_INCOMPATIBLE | \
RBD_FEATURE_EXCLUSIVE_LOCK | \
RBD_FEATURE_OBJECT_MAP | \
RBD_FEATURE_FAST_DIFF | \
RBD_FEATURE_DEEP_FLATTEN | \
RBD_FEATURE_JOURNALING)
Some features are no-way back: if you downgrade you cannot restore
anymore.
As stated here: https://bugzilla.redhat.com/show_bug.cgi?id=1326645
This is the right behaviour and redhat will not fix this.
So don't downgrade your features or you'll have to export-import
all the images.
I'm getting crazy.
Il 23/06/2017 22:36, David Turner ha
scritto:
I upgraded to Jewel from Hammer and was able to
enable those features on all of my rbds that were format 2,
which yours is. Just test it on some non customer data and
see how it goes.
Ok,
At moment my client use only nbd-rbd, can I use all
these feature or this is something unavoidable?
I guess it's ok.
Reading around seems that a lost feature cannot be
re-enabled due to back-compatibility with old clients.
... I guess I'll need to export and import in a new
image fully feature.
Is it?
Il
23/06/2017 22:25, David Turner ha scritto:
All of the features you are talking about
likely require the exclusive-lock which requires the
4.9 linux kernel. You cannot map any RBDs that have
these features enabled with any kernel older than
that.
The features you can enable are layering,
exclusive-lock, object-map, and fast-diff. You
cannot enable deep-flatten on any RBD ever. RBD's
can only be created with that feature. You may need
to enable these in a specific order. I believe that
the order I have the features listed is the order
you need to enable them in, at least that order
should work.
Hi everybody,
I just realize that all my Images are completly
without features:
rbd info VHD-4c7ebb38-b081-48da-9b57-aac14bdf88c4
rbd image 'VHD-4c7ebb38-b081-48da-9b57-aac14bdf88c4':
size 102400 MB in 51200 objects
order 21 (2048 kB objects)
block_name_prefix: rbd_data.5fde2ae8944a
format: 2
features:
flags:
try to enabling them will get this error:
rbd: failed to update image features: (22) Invalid argument
2017-06-23 21:20:03.748746 7fdec1b34d80 -1 librbd: cannot update immutable features
I read on the guide I shoulded had place in the
config rbd_default_features
What can I do now to enable this feature all
feature of jewel on all images?
Can I insert all the feature of jewel or is
there any issue with old kernel?
Thanks,
Max
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