Bob Weber <bobrwe...@gmail.com> writes: > On 3/10/19 5:20 PM, Joe Pfeiffer wrote: > > Since a recent update, my /var/log/syslog is getting spammed with huge > numbers of messages of the form > > Mar 10 14:02:25 snowball systemd-udevd[18681]: Process '/sbin/mdadm > --incremental --export /dev/sda3 --offroot > /dev/disk/by-id/ata-ST3000DM001-1ER166_Z501MTQ3-part3 > /dev/disk/by-partuuid/ad6f31ee-1866-400c-84f8-2c54da6abd2e > /dev/disk/by-path/pci-0000:00:11.0-ata-1-part3 > /dev/disk/by-id/wwn-0x5000c50086c86ae8-part3' failed with exit code 1. > > When I run the command by hand, I get > > root@snowball:~# /sbin/mdadm --incremental --export /dev/sda3 --offroot > /dev/disk/by-id/ata-ST3000DM001-1ER166_Z501MTQ3-part3 > /dev/disk/by-partuuid/ad6f31ee-1866-400c-84f8-2c54da6abd2e > /dev/disk/by-path/pci-0000:00:11.0-ata-1-part3 > /dev/disk/by-id/wwn-0x5000c50086c86ae8-part3 > mdadm: cannot reopen /dev/sda3: Device or resource busy. > > Which at least gives me a small clue, but really not much of one. > > I'm not even really clear on whther this is a systemd or mdadm bug. > > So, some questions: > > 1) what is this command trying to do? I do understand a little about mdadm, > and am running a RAID 1 array on this machine. But this is using an > option (--offroot) that doesn't even appear in the man page, and I've > got no idea what it's trying to accomplish. > > 2) how can I make it stop? > > I also have these kind of messages for my 3 raid1 arrays. The messages > started after an update to testing done on 2/26/18 and have continued up to > 3/11/18 > (today). I looked at the terminal logs and I was running udev (240-6) > (installed 2/22) and mdadm (4.1-1) (installed 2/6). My udev is now at 241-1 > and mdadm is still > at 4.1-1.
I'm seeing it at those versions, also. > Since the arrays are started correctly as shown by "cat /proc/mdstat" I > haven't paid much attention to these messages. They only occur at boot. The arrays are started correctly, but I'm getting bursts of these messages every five minutes so it's annoying. > My system is running testing and I do an upgrade just about every day. Same here.