That command is used for debugging to show the notifications sent by librbd whenever image properties change. These notifications are used by other librbd clients with the same image open to synchronize state (e.g. a snapshot was created so instruct the other librbd client to refresh the image's header).
On Fri, Jun 3, 2016 at 2:56 AM, dingxf48@xxxxxxxxxxx <dingxf48@xxxxxxxxxxx> wrote:
everyone:
hi
I am writing a doc for rbd command .when I use the command “rbd watch <image-name> ” .it can only display as follows:
When I create snap、delete snap、lock image、protect snap and unprotect snap ,it changes like this:
So I do not know how to use this command and What is this command monitoring!
Please give me some help.
thanks
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Jason
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