Hi, I've created a device mapper target and I wanna test its read and write mechanisms. I created a device using this target and tried to write a filesystem on to the device. My target is creating roughly two outgoing bios per incoming bio. Which is maybe why I'm not able to get a proper log after running the mke2fs command as while writing the filesystem, there are massive amounts of writes performed on the device. So, I tried to use the cat command to directly write to the device file. The write is being performed for sure because I'm able to view the data written to the underlying device. But there is no output when I try to read the device file contents using cat. Is there any other way to test the read/write workflows of a dm target that can give out a proper log ? Regards, Gaurav