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From:   "J. R. Okajima" <hooanon05g@gmail.com>
Subject: Re: Why is the length of max mount option a page size??
To:     Jungsub Shin <supsup5642@gmail.com>
Cc:     Al Viro <viro@ZenIV.linux.org.uk>, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
In-Reply-To: <20180529035703.GA32550@supsup-VirtualBox>
References: <20180521173959.GA12779@supsup-VirtualBox> <5670.1527244930@jrobl> <20180529002456.GA30767@supsup-VirtualBox> <20180529011412.GE30522@ZenIV.linux.org.uk> <20180529035703.GA32550@supsup-VirtualBox>
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Date:   Wed, 30 May 2018 11:40:27 +0900
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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