+++ This bug was initially created as a clone of Bug #249067 +++ Description of problem: dosfslabel fails to read/write label on device-mapper device How reproducible: Always Steps to Reproduce: 1. Create DM device (multipath, dmraid, etc.) 2. Execute dosfslabel to write a label on it Actual results: # dosfslabel /dev/mapper/200301384044c0009p1 a Invalid disk format in boot sector. # dosfslabel /dev/mapper/200301384044c0009p1 Invalid disk format in boot sector. Expected results: # dosfslabel /dev/mapper/200301384044c0009p1 a # dosfslabel /dev/mapper/200301384044c0009p1 a --- I was able to reproduce the bug on current rawhide with the shell script: Created an attachment (id=159672) reproducer shell script
The bug is no longer present in dosfstools-3.0.1-1 (the previous reproduction was with dosfstools 2.11).