Am 26.01.2017 um 19:02 schrieb Luke Pyzowski:
I have a large RAID6 device with 24 local drives on CentOS7.3. Randomly (around 50% of the time) systemd will unmount my RAID device thinking it is degraded after the mdadm-last-resort@.timer expires, however the device is working normally by all accounts, and I can immediately mount it manually upon boot completion. In the logs below /share is the RAID device. I can increase the timer in /usr/lib/systemd/system/mdadm-last-resort@.timer from 30 to 60 seconds, but this problem can randomly still occur. systemd[1]: Created slice system-mdadm\x2dlast\x2dresort.slice. systemd[1]: Starting system-mdadm\x2dlast\x2dresort.slice. systemd[1]: Starting Activate md array even though degraded... systemd[1]: Stopped target Local File Systems. systemd[1]: Stopping Local File Systems. systemd[1]: Unmounting /share... systemd[1]: Stopped (with error) /dev/md0. systemd[1]: Started Activate md array even though degraded. systemd[1]: Unmounted /share.
that also happens randomly in my Fedora 24 testing-vm with a RAID10 and you can be sure that in a virtual machine drives don't disappear or take long to appear
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