On my raspberry pi, I recently upgraded to debian [/raspbian] buster. Ever since then, cron jobs creating directories using
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mkdir -p <directory name>
I'm absolutely certain that /backup on /dev/sda2 (aka "/") is empty. I'm pretty certain that I'm mounting my USB drive correctly (mount /dev/disk/by-label/BACKUP1 /backup)
Does anyone have any idea what is going on here?
Steps to Reproduce
As root:
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# mkdir /backup
# mount /dev/sdb1 /backup
# mkdir -p /backup/mars/foo
# batch << EOF
# mkdir -p /backup/mars/bar
> ls /backup/mars > /tmp/mount.test.log
> EOF
Expected
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# ls /backup/mars
foo bar
# cat /tmp/mount.test.log
foo bar
# umount /backup
# ls /backup/mars
ls: cannot access '/backup/mars': No such file or directory
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# ls /backup/mars
foo
# cat /tmp/mount.test.log
bar
# umount /backup
# ls /backup/mars
bar