(discussed with Kay and Harald on IRC, Harald can reproduce it) After mdadm -C ..., udev sometimes doesn't show 'ID_FS_TYPE = linux_raid_member' for a member device of the new RAID. Version-Release number of selected component (if applicable): systemd-199-1.fc20.x86_64 kernel-3.9.0-0.rc4.git0.1.fc20.x86_64 How reproducible: ~ 10% Steps to Reproduce: 1. run this loop: for i in $(seq 100); do echo ---------------; mdadm -S /dev/md0; wipefs -a /dev/sdb1; wipefs -a /dev/sdb2; udevadm settle; udevadm info /dev/sdb1 | grep ID_FS_TYPE; mdadm -C --force -l 0 -n 2 /dev/md0 /dev/sdb1 /dev/sdb2; udevadm settle; udevadm info /dev/sdb1 | grep ID_FS_TYPE; done | tee log 2. grep ID_FS_TYPE log | wc -l Actual results: less than 100 'ID_FS_TYPE' strings found in the log Expected results: exactly 100 'ID_FS_TYPE' strings found in the log Additional info: It is reproducible only with two devices on one disk, i.e. sdb1 and sdb2. With two different disks, e.g. sda1 and sdb1, it works well. Also, when 'udevadm info /dev/sdb1' doesn't show ID_FS_TYPE, it is still *not* updated after ~1 minute or 'udevadm settle'. Only 'udevadm trigger' helps. (This indicates that something did not generate some event, but I really don't know udev or kernel internals).
Created attachment 732815 [details] Proposed patch
With the patched mdadm, I am not able to hit the bug.
Did you post this patch upstream?
(In reply to comment #3) > Did you post this patch upstream? no... please review and do so.
Created attachment 734166 [details] Proposed revised patch
Slightly modified patch posted upstream - lets see what the maintainer says to it.
This bug appears to have been reported against 'rawhide' during the Fedora 20 development cycle. Changing version to '20'. More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora20
Any news here? What did upstream say?
(In reply to Jan Safranek from comment #8) > Any news here? What did upstream say? Looking at the thread and git there does not seem to have been any movement or discussion of that patch at all..
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