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Hi, Zbyszek,</div>
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The kernel default is to mount root ro, so unless there's some configuration to<br>
mount or remount it rw, it'll stay ro. Generally this is configured in two<br>
places 'rw' on the kernel command line and 'rw' in /etc/fstab. Do you have<br>
one or both of those?<br>
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Yes. In this case, the kernel command line in grub contains the usual "ro" option, but /etc/fstab has an entry for root with "defaults" as the sole option. Default options are theoretically "rw, suid, dev, exec, auto, nouser, and async". To verify, I placed
that option list in /etc/fstab for root, and saw the same behavior on reboot, so I eliminated the fstab entry as a potential issue.</div>
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<div class="PlainText elementToProof ContentPasted0">Also related - the device is identified in fstab by UUID, not by label or partition. I verified the UUID of the device still matches the UUID in fstab, etc.</div>
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<div class="PlainText elementToProof ContentPasted0">If I change the kernel command line in grub to use "rw", root mounts rw as expected. </div>
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If a remount is done, it'll be done by systemd-remount-fs.service. Do you<br>
see it in the logs?<br>
</blockquote>
Ah, I misunderstood initrd-switch-root - thanks. On a system that successfully boots with root mounted rw, I don't see anything about systemd-remount-fs.service until it's shutdown, when the service is stopped, but systemd was ratelimited by the kernel on that
boot, so a startup message may have been missed. But - I can see that systemd-remount-fs.service is Active/exited (via systemctl status command).</div>
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<div class="PlainText elementToProof ContentPasted0">On the problem system, systemd-remount-fs.service is inactive/dead - and shows the same status if I reboot with "rw" on the kernel command line (which would be expected, given our symptoms, I think?). </div>
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<div class="PlainText elementToProof ContentPasted0">On both systems, it's linked in /usr/lib/systemd/system/local-fs.target.wants - so, should be run as part of getting to that target, if I understand correctly? What should my next step be to determine why
it's not being run?</div>
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<div class="PlainText elementToProof ContentPasted0">Thank you!</div>
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<div class="PlainText elementToProof ContentPasted0">Dave</div>
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