diff options
| author | John Ogness <john.ogness@linutronix.de> | 2018-09-06 11:06:11 +0200 |
|---|---|---|
| committer | John Ogness <john.ogness@linutronix.de> | 2018-09-06 11:06:11 +0200 |
| commit | 5949b9031c9e75bc377f3cdb04f514f29bdcf69f (patch) | |
| tree | 7f274309b165338ccf0d5e0fabfe355c1b5e9cb4 /schulung_tools/rootfs_basic | |
| parent | 8b3a88ab325a5b5bb04182a5711ae06059c12f3e (diff) | |
dd-multi: workaround mount/umount issue
It seems that calling umount directly after mount can lead to a
busy error. With strace on umount the problem goes away. It must
be a very small window. Someone should debug the umount syscall
on this. It is reproducable with:
./dd-multi.sh lx-trainer.img /dev/sdx
(i.e. regular training image and no layers)
Implement a workaround for this for now.
From the comments...
If there were no layer files added, umount might return a busy
error since we just mounted. (Possibly a kernel bug.) By
accessing the filesytem before unmounting it, the mount/umount
problem seems to go away. Use "ls" to access the filesystem.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Diffstat (limited to 'schulung_tools/rootfs_basic')
0 files changed, 0 insertions, 0 deletions