-----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.html Thanks, Kazu -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/crash-utility