Updated my Pi Zero Ws with the latest kernel and got the / mount is busy message.
Ran the sudo systemctl restart systemd-udevd.service command and it disappears.
Naturally I rebooted cleanly after the kernel update but it looks like this is at least one of the culprits.
Unable to Switch Back to 'rpi-ro'
Re: Unable to Switch Back to 'rpi-ro'
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Brian G8SEZ
Brian G8SEZ
Re: Unable to Switch Back to 'rpi-ro'
No Go..... mount point is busy
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Re: Unable to Switch Back to 'rpi-ro'
This has worked for me several times now. A big thanks!KE7FNS wrote: ↑Thu Oct 10, 2019 9:41 pmCode: Select all
sudo systemctl restart systemd-udevd.service
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Re: Unable to Switch Back to 'rpi-ro'
Hasn't worked for meKE0FHS wrote:This has worked for me several times now. A big thanks!KE7FNS wrote: ↑Thu Oct 10, 2019 9:41 pmCode: Select all
sudo systemctl restart systemd-udevd.service
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AntiSquid Disclaimer: All messages posted are personal opinion only and may not constitute fact.
Re: Unable to Switch Back to 'rpi-ro'
Here's what I've found so far:
So I ordered a couple, along with RPi 4B boards, fans, and their USB-C power switches, which I really like. They also have various all-included kits available, but I don't need any more microSD cards/readers or micro HDMI cables, so I put together my orders from their basic RPi 4B 1GB kit in order to save a few bucks (includes USB-C power supply and three heat sinks), and then added the other items from their other accessories list.
.
- There are two different messages I see when Pi-Star gets stuck in rw mode: mount: / is busy and mount: /: mount point is busy. I haven't yet identified the pattern for when each message gets displayed. It might be that mount: /: mount point is busy is the Buster message, but I'm not sure yet.
- If Pi-Star starts up in rw mode, I sometimes can use rpi-ro to kick it into ro mode, but other times not.
- If Pi-Star is in ro mode and I run sudo pistar-update, then it sometimes finishes in rw mode. Sometimes I can use rpi-ro to kick it into ro mode, but other times not.
- If I can't use rpi-ro to kick it into ro modes, then most of the time I can run sudo systemctl restart systemd-udevd.service followed by rpi-ro to kick it into ro mode. But sometimes that doesn't work, especially if Pi-Star starts up in rw mode.
If I can't use rpi-ro or sudo systemctl restart systemd-udevd.service followed by rpi-ro to kick it into ro mode, then the only thing I've found that works is rebooting. - Just now, on RPi 4 hotspot running 4.1.0-RC6, Pi-Star started up in rw mode. It did not work to use rpi-ro to kick it into ro mode (message: mount: /: mount point is busy), but it did work to run sudo systemctl restart systemd-udevd.service followed by rpi-ro to kick it into ro mode.
Next, I ran sudo pistar-update. (Note: Most of the time, I run updates via SSH so I catch any OS updates, too, and today's update did include an OS update.) When the update was finished, it ended up in rw mode with the mount: /: mount point is busy message. Once again, running sudo systemctl restart systemd-udevd.service followed by rpi-ro did successfully kick it into ro mode. - Earlier this morning, when I started up an RPi 3A+ hotspot running 4.1.0-RC6, Pi-Star started up in rw mode. It did not work to use rpi-ro to kick it into ro mode (unfortunately, I didn't pay to the exact mount is busy message that was displayed). Running sudo systemctl restart systemd-udevd.service followed by rpi-ro also didn't kick it into ro mode. In that case, I rebooted, and the second time it started up in ro mode.
So I ordered a couple, along with RPi 4B boards, fans, and their USB-C power switches, which I really like. They also have various all-included kits available, but I don't need any more microSD cards/readers or micro HDMI cables, so I put together my orders from their basic RPi 4B 1GB kit in order to save a few bucks (includes USB-C power supply and three heat sinks), and then added the other items from their other accessories list.
.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Re: Unable to Switch Back to 'rpi-ro'
Ha-ha, that's a strange example of "better luck"!
My callsign at gmail.com works.
My callsign at gmail.com works.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Re: Unable to Switch Back to 'rpi-ro'
Just an FYI - I ran a pistar-update on both my DMR ZUM and Fusion Jumbo today after reading about a potential kernel glitch from a friend & both units came back up 'ro' after a safe reboot.
Maybe it was something specific to Buster, and not Andy's software?
Maybe it was something specific to Buster, and not Andy's software?
Re: Unable to Switch Back to 'rpi-ro'
I updated all 5 of my hotspots. They went into ro. Played around with them some...doing updates, going into rw mode. All ended up back on ro. Maybe the mystery is solved.W2SJW wrote:Just an FYI - I ran a pistar-update on both my DMR ZUM and Fusion Jumbo today after reading about a potential kernel glitch from a friend & both units came back up 'ro' after a safe reboot.
Maybe it was something specific to Buster, and not Andy's software?
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Re: Unable to Switch Back to 'rpi-ro'
Yeah. It goes back to ro after an update.
Sent from my SM-A102U using Tapatalk
Sent from my SM-A102U using Tapatalk
AntiSquid Disclaimer: All messages posted are personal opinion only and may not constitute fact.
Re: Unable to Switch Back to 'rpi-ro'
This bug has always been a bit random for me, going to rw sometimes, but not always; so while it's great to see some people having success seeing it go back to ro after an update, I'll be waiting a week or two before I start thinking it's really solved.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm