Re: [Crash-utility] [PATCH v2] Handle blk_mq_ctx member changes for kernels v5.16-rc1~75^2~44
-----Original Message-----
Admittedly, I haven't looked into the details, but those simple
numbers for
pending IO have been very valuable for me, when analyzing dumps with
dm-multipath over (FC-attached) SCSI disks. Aren't those pending IO numbers
available elsewhere in the kernel? Maybe not in debugfs anymore, but I suppose
the (mq) block layer does keep track of them?
AFAIK, unfortunately there is no simple counter, crash needs to parse sbitmap
structures to count them. (please let us know if there is a simpler solution.)
Currently Sergey has worked on adding sbitmap function [1], and we plan to make
use of it after merging the patch. It may take some time, so Lianbo's patch is
a temporary workaround for the error.
Maybe it was better to write the status on the commit log..
[1] https://listman.redhat.com/archives/crash-utility/2021-December/msg00062....
Thanks,
Kazu