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I ran into the error

device-mapper: reload ioctl on osprober-linux-nvme0n1p7 failed: Device or resource busy

while compiling the kernel in Ubuntu Studio. I use ZFS for my main drive.

Apparently, this is a bug: [zfs-root] "device-mapper: reload ioctl on osprober-linux-sdaX failed: Device or resource busy" against devices owned by ZFS.

How can I work around it?

Paulo Tomé
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SharkTH
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1 Answers1

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According to the launchpad thread you linked to, it is a cosmetic error caused by os-prober not properly ignoring ZFS-managed drives, and if you're not dual-booting you can safely make the message go away with apt purge os-prober. See also here.

drammock
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