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blubberbaer
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Joined: 15 Mar 2016
Posts: 67

PostPosted: Mon Jun 14, 2021 3:17 pm    Post subject: rpi 4 with usb drive -> suddenly readonly fs Reply with quote

Hy Everybody,

during emerge i get this error:

Code:

--- Logging error ---
Exception in callback PipeLogger._io_loop_done(<Task finishe...file system')>)
handle: <Handle PipeLogger._io_loop_done(<Task finishe...file system')>)>
Traceback (most recent call last):
  File "/usr/lib/python3.8/asyncio/events.py", line 81, in _run
  File "/usr/lib/python3.8/site-packages/portage/util/_async/PipeLogger.py", line 141, in _io_loop_done
  File "/usr/lib/python3.8/site-packages/portage/util/_async/PipeLogger.py", line 137, in _io_loop
OSError: [Errno 30] Read-only file system
Terminated
pi4_04 ~ #
pi4_04 ~ #
pi4_04 ~ #
pi4_04 ~ #
pi4_04 ~ # df
bash: df: command not found
pi4_04 ~ # ls
bash: ls: command not found
pi4_04 ~ # dmesg
bash: dmesg: command not found


Out of the sudden, my filesystem becomes a readonly filesystem .... ;-(

it is kind of difficult too debug, cause i can't enter any command.

I've attached an usb-adapter from renkforce with an SSD mounted on it ....

/ is placed on the ssd, boot is done from sd card ....

any clues where to start searching ?


Greetings,

blubberbaer
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Zucca
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PostPosted: Mon Jun 14, 2021 4:19 pm    Post subject: Reply with quote

Try to run the commands with full path.
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NeddySeagoon
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PostPosted: Mon Jun 14, 2021 6:44 pm    Post subject: Reply with quote

blubberbaer,

It looks like something nasty has happened to the filesystem or the drive.
It gone read only due to errors.

Those command not found errors suggest that it may have gone away entirely, or your $PATH has become unset.
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Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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ShorTie
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PostPosted: Tue Jun 15, 2021 9:00 am    Post subject: Reply with quote

Sorry to say but
Quote:
bash: ls: command not found

Happens to my sdcards right before I throw them away.
Maybe try reformatting the drive on another pc maybe.
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Irre
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PostPosted: Tue Jun 15, 2021 9:04 pm    Post subject: Reply with quote

USB3 works really bad on my rpi4. I connect my fast USB3 Samsung SSD T5 and LaCie d2 Professional only to USB2. There they work fine and fast, but when I try USB3 the system hangs and I had to repair the filesystem (ext4).
uname -a: rpi4-500g-sda1 5.4.45-v8-3b41649ff96d-p4-bis+ #2 SMP PREEMPT Tue Jun 16 14:11:43 GMT 2020 aarch64 GNU/Linux
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Zucca
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PostPosted: Wed Jun 16, 2021 8:48 am    Post subject: That's a flash controller protecting your data Reply with quote

ShorTie wrote:
Happens to my sdcards right before I throw them away.
That's a feature.
When sd card flash controller detects a problem it cannot fix, it goes to ro state.
Zeroing fash based storage with dd for example may cause this if you're not careful.
    I know this from experience. I zeroed one of my USB stick with dd.
    It (probably) overfilled the flash area reserved for normal storage and wrote over the area that is reserved for spare flash cells and/or data for flash controller... and thus made the stick ro (right after it next time needed some data from the portion that I accidentally zeroed).
So at least at the point when a spare cell is needed and there's none left, your flash card will become read only to protect itself and gives you a window of opportunity to still retrieve your data to a safer place.
That's a feature you want. Especially on such flash cards you would use on a digital camera for example.
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flysideways
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PostPosted: Wed Jun 16, 2021 5:30 pm    Post subject: Re: rpi 4 with usb drive -> suddenly readonly fs Reply with quote

blubberbaer wrote:
Hy Everybody,

...

I've attached an usb-adapter from renkforce with an SSD mounted on it ....

/ is placed on the ssd, boot is done from sd card ....

...

Greetings,

blubberbaer


You may already know this but for others that find this thread, the Pi 4 can be booted from a usb attached drive with no sd card. The outcomes can vary when using a usb attached ssd or hard drive depending upon the usb adapter used. I have no problem using Samsung T7 drives in the usb3 ports.
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NeddySeagoon
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PostPosted: Wed Jun 16, 2021 6:00 pm    Post subject: Reply with quote

Irre,

I've seen that with a firmware upgrade. It was the USB3 power management upgrade that destroyed by USB3 performance.
Downgrading just the USB3 firmware fixed it.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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Irre
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PostPosted: Thu Jun 17, 2021 6:07 pm    Post subject: Reply with quote

NeddySeagoon,
thank you for information on USB3 firmware. :)
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