From mboxrd@z Thu Jan  1 00:00:00 1970
X-GM-THRID: 7325333789757931520
Date: Wed, 17 Jan 2024 23:16:21 -0800 (PST)
From: Srinuvasan Arjunan <srinuvasanasv@gmail.com>
To: isar-users <isar-users@googlegroups.com>
Message-Id: <398dbb64-03db-4922-b829-4cef9656804cn@googlegroups.com>
Subject: mount loop devices not works in schroot
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Hi All,

             Presently we migrated the chroot to sbuildchroot and one of my 
image creation part i try to mount some temporary file system as a loop 
device and do create volumes and other stuffs.

Here i could see am not able to mount the file system as a loop device 
specifically in chroot.

reproduce steps:
 
1. chroot into the created session 
2. dd if=/dev/zero of=ext4.img bs=4k count=2048
3.mkfs.ext4 ext4.img
4. mnt=$(mktemp -d)
5.  mount -o loop 'ext4.img' "${mnt}"

when i mount this ext4.img as a loop devices it throws the below error:
Error: "mount: /tmp/tmp.7oJoEpL0vt: mount failed: Operation not permitted." 

But the above steps are working fine in my host machine.

I hope we need to install the loop module in chroot or any other suggestion 
that would be helpful to mount loop devices in schroot sessions.

Note:  losetup also not works in schroot.

Many thanks,
Srinu




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Hi All,<div><br /></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0Presently we migrated the chroot to sbuildchroot and one of my image cre=
ation part i try to mount some temporary file system as a loop device and d=
o create volumes and other stuffs.</div><div><br /></div><div>Here i could =
see am not able to mount the file system as a loop device specifically in c=
hroot.</div><div><br /></div><div>reproduce steps:</div><div>=C2=A0</div><d=
iv>1. chroot into the created session=C2=A0</div><div>2.=C2=A0dd if=3D/dev/=
zero of=3Dext4.img bs=3D4k count=3D2048</div><div>3.mkfs.ext4 ext4.img</div=
><div>4.=C2=A0mnt=3D$(mktemp -d)</div><div>5.=C2=A0=C2=A0mount -o loop 'ext=
4.img' "${mnt}"</div><div><br /></div><div>when i mount this ext4.img as a =
loop devices it throws the below error:</div><div>Error: "mount: /tmp/tmp.7=
oJoEpL0vt: mount failed: Operation not permitted."=C2=A0</div><div><br /></=
div><div>But the above steps are working fine in my host machine.</div><div=
><br /></div><div>I hope we need to install the loop module in chroot or an=
y other suggestion that would be helpful to mount loop devices in schroot s=
essions.</div><div><br /></div><div>Note:=C2=A0 losetup also not works in s=
chroot.</div><div><br /></div><div>Many thanks,</div><div>Srinu</div><div><=
br /></div><div><br /></div><div><br /></div>
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