Hello, thank you, I figured out that the partition is mounted in initramfs and not unmounted before the main system is started. When I manually unmount the partition in initramfs, the problem goes away. On Tue, 21 Jan 2020 12:50:41 -0500 "Valdis Klētnieks" <valdis.kletnieks@vt.edu> wrote:
You should also check with 'cat /proc/mounts'.
I checked and it is not there.
Next I modified the ext driver to print stack when mounting, and I got:
Call Trace: ? ext4_calculate_overhead+0x520/0x520 mount_bdev+0x15a/0x180
Looks like what I'd expect to see when in the mount syscall. What were you expecting to see here?
I expected the mount to be done by kernel itself, as I forgot about initramfs, and that the stack trace would point me to the procedure that does it in the kernel. Wrong guess :) One more question, since I have another project that seldomly behaves similarly, and I have had no luck with diagnostics so far. Is there a way how to detect this problem (partition mounted, but not shown in /proc/mounts) from the main system? Thank you and best regards Adam -- Ing. Adam Trhoň, Software Engineer Touchless Biometric Systems s.r.o. | Palackého třída 180/44 | 61200 Brno | CZECH REPUBLIC | Mobile: +42(0) 721 565 113 | tbs-biometrics.cz