On Fri, Nov 18 2016, Andy Smith wrote: > Hi Neil, > > On Fri, Nov 18, 2016 at 09:43:44AM +1100, NeilBrown wrote: >> Something you could try, after boot and while the arrays are still not >> assembled, is >> >> echo change > /sys/block/sdc/uevent >> echo change > /sys/block/sdd/uevent >> >> That should cause udev to assemble the array. > > Nothing appeared to happen. There was nothing interesting in syslog > or systemd's journal. Here's the output from "udevadm monitor": OK, we are getting closer. That is good. > > $ sudo udevadm monitor > monitor will print the received events for: > UDEV - the event which udev sends out after rule processing > KERNEL - the kernel uevent > > KERNEL[12376.719100] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/host10/port-10:0/end_device-10:0/target10:0:0/10:0:0:0/block/sdc (block) > UDEV [12376.722996] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/host10/port-10:0/end_device-10:0/target10:0:0/10:0:0:0/block/sdc (block) > KERNEL[12388.329566] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/host10/port-10:1/end_device-10:1/target10:0:1/10:0:1:0/block/sdd (block) > UDEV [12388.333441] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/host10/port-10:1/end_device-10:1/target10:0:1/10:0:1:0/block/sdd (block) > >> If that doesn't work, the looking over the udev logs, and possibly >> turning on extra udev logging, might lead to an answer. > > I don't know how to do that, but I'll look into it - thanks. udevadm control -l debug might help. NeilBrown > > Cheers, > Andy
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