linux-kernel - Re: Why is the length of max mount option a page size??

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Message-ID: <20180530235140.GA3974@supsup-VirtualBox>
Date:   Thu, 31 May 2018 08:51:40 +0900
From:   Jungsub Shin <supsup5642@...il.com>
To:     "J. R. Okajima" <hooanon05g@...il.com>
Cc:     Al Viro <viro@...IV.linux.org.uk>, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: Why is the length of max mount option a page size??

On Wed, May 30, 2018 at 11:40:27AM +0900, J. R. Okajima wrote:
> Jungsub Shin:
> > Do you mean using symlinks or bind mount to reduce length of mount
> > options?? I can remove "~/tca_agent/image_layer_dir" string. But the
> > other character means unique ID of layer and i can't compress it or
> > replace it to another string. This is not fundamental solution. Docker=20
> 
> Can't it be a solution?
> 
> # mount -o bind /long/path0 /br0
> # mount -o bind /long/path1 /br1
> 	:::
> # mount -t aufs -o br=/br0:/br1:... none /mntpnt
> 
> or
> 
> # ln -s /long/path0 /br0
> # ln -s /long/path1 /br1
> 	:::
> # mount -t aufs -o br=/br0:/br1:... none /mntpnt
> 
> 
> J. R. Okajima

I don't test them, but they will work well.
That's temporary solution. So i'm use remount,append option.

Thanks