23 lines
841 B
Bash
23 lines
841 B
Bash
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#!/bin/sh
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# Fix mount loops that prevent unmount/eject.
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#
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# During startup, we mount our repo (e.g. the DVD) at $repodir or $isodir.
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# We then mount the runtime image from that repo at /newroot and switch into it.
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# Switching moves $repodir to /newroot/$repodir, which creates a mount loop:
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#
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# -> You can't unmount the runtime image because the DVD is mounted under it
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# -> You can't unmount the DVD because it holds the mounted runtime image
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#
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# And now you can't unmount or eject the DVD!
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#
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# We fix this by moving the repo mounts back out from under the runtime image
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# during shutdown. Then everything can be unmounted like normal.
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. /lib/anaconda-lib.sh
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for mnt in $repodir $isodir; do
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# systemd-shutdown puts old root at /oldroot
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oldmnt=/oldroot$mnt
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grep -qw "$oldmnt" /proc/mounts && mount --move "$oldmnt" "$mnt"
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done
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