Hi Fabian,
Thanks for reporting.
On 2015/1/13 5:59, Fabian Sturm wrote:
>
> sudo mount -t overlay -o lowerdir=/tmp/a,/tmp/a0 overlay /tmp/merged
I think the cause of this failure is the wrong mount option you
are using.
should be:
sudo mount -t overlay -o lowerdir=/tmp/a:/tmp/a0 overlay /tmp/merged
Comma is used to separate different mount options. Overlayfs use
colon as the separator between lower directories.
I don't know if it is a correct resolution for your problem. You
can try it first. It's OK in my environment to mount ovl with
numbers in directory name.
> ret=$(echo $?)
> echo $ret
> if [[ "$ret" == "0" ]]; then
> sudo umount /tmp/merged
> fi
>
> sudo mount -t overlay -o lowerdir=/tmp/a,/tmp/0a overlay /tmp/merged
> ret=$(echo $?)
> echo $ret
> if [[ "$ret" == "0" ]]; then
> sudo umount /tmp/merged
> fi
>
Anyway, I think overlayfs should print an error message if an
incorrect mount option is caught like other filesystems.
Reported-by: Fabian Sturm <fabian.sturm@xxxxxxx>
Signed-off-by: hujianyang <hujianyang@xxxxxxxxxx>
---
fs/overlayfs/super.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index b90952f..ab3c8cb 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -615,6 +615,7 @@ static int ovl_parse_opt(char *opt, struct ovl_config *config)
break;
default:
+ pr_err("overlayfs: unrecognized mount option \"%s\" or missing value\n", p);
return -EINVAL;
}
}
--
1.6.0.2
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