Jason, sorry for the typo of your email address in my last mail.......
On 29/03/2017, 00:36, Jason Dillaman wrote:
While certainly that could be a feature that could be added to "rbd
info", it will take a while for this feature to reach full use since
it would rely on new versions of librbd / krbd.
Additionally, access and modified timestamps would require sending out
an update notification so that other clients notice the change. You
would also want to highly throttle any updates to the modification
timestamp -- rendering it a rough approximation of the true last
modification time. Finally, a client might not have access to update
an image when it opens it read-only --- rendering the last access
time, again, as a rough approximation.
IMHO, I think there are a lot of other, higher-priority backlog items
for RBD (and supporting services) [1] -- but I've added it to the
bottom of backlog.
[1] https://trello.com/b/ugTc2QFH/ceph-backlog
Yes, agree, let's focus on the other higher-priority backlog items now.
Thanx
On Fri, Mar 24, 2017 at 3:27 AM, Dongsheng Yang
<dongsheng.yang@xxxxxxxxxxxx> wrote:
Hi jason,
do you think this is a good feature for rbd?
maybe we can implement a "rbd stat" command
to show atime, mtime and ctime of an image.
Yang
On 03/23/2017 08:36 PM, Christoph Adomeit wrote:
Hi,
no i did not enable the journalling feature since we do not use mirroring.
On Thu, Mar 23, 2017 at 08:10:05PM +0800, Dongsheng Yang wrote:
Did you enable the journaling feature?
On 03/23/2017 07:44 PM, Christoph Adomeit wrote:
Hi Yang,
I mean "any write" to this image.
I am sure we have a lot of not-used-anymore rbd images in our pool and I
am trying to identify them.
The mtime would be a good hint to show which images might be unused.
Christoph
On Thu, Mar 23, 2017 at 07:32:49PM +0800, Dongsheng Yang wrote:
Hi Christoph,
On 03/23/2017 07:16 PM, Christoph Adomeit wrote:
Hello List,
i am wondering if there is meanwhile an easy method in ceph to find
more information about rbd-images.
For example I am interested in the modification time of an rbd image.
Do you mean some metadata changing? such as resize?
Or any write to this image?
Thanx
Yang
I found some posts from 2015 that say we have to go over all the
objects of an rbd image and find the newest mtime put this is not a
preferred solution for me. It takes to much time and too many system
resources.
Any Ideas ?
Thanks
Christoph
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