Hi,
At the moment new stack doesn't populate frame->root->unique in all cases. This makes it difficult to debug hung frames by examining successive state dumps. Fuse and server xlator populate it whenever they can, but other xlators won't be able to assign one when they need to create a new frame/stack. Is it okay to change create_frame() code to always populate it with an increasing number for this purpose?
I checked both fuse and server xlator use it only in gf_log() so it doesn't seem like there is any other link between frame->root->unique and the functionality of fuse, server xlators.
Do let me know if I missed anything before sending this change.
--
Pranith
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