<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">For the sake of completeness, here are the commands to create the image:<div class=""><br class=""></div><div class="">---</div><div class="">dd if=/dev/zero of=test.img bs=1M count=10</div><div class="">mkfs.ext4 -c test.img</div><div class="">mount -o loop test.img /mnt/test</div><div class=""><br class=""></div><div class=""># copy root-fs to /mnt/test</div><div class=""># perform id shifting if necessary</div><div class=""><br class=""></div><div class="">umount /mnt/test<br class=""><div class="">---</div><div class=""><br class=""></div><div class="">Thanks for the support!</div><div class=""><br class=""></div><div class="">Todor</div><div class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On 15. Jun 2018, at 18:20, Christian Brauner <<a href="mailto:christian@brauner.io" class="">christian@brauner.io</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">On Fri, Jun 15, 2018 at 06:03:06PM +0200, Dr. Todor Dimitrov wrote:</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" class=""><blockquote type="cite" class="">but it will have to be idshifted before the start.<br class=""></blockquote></blockquote><br class="">So the id shifting will be also done automatically? Once or on each start?<br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">No, the id shifting is *not* done by LXC. Only the *mount*.</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br class="">What about the format of the image file? Is there any documentation or samples on this? I assume a dd img with a single partition (e.g. ext4) should be OK?<br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">We don't really handle partitions, I think. You can setup a privileged</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">container with:</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">sudo lxc-create ttt -t download -B loop -- -d alpine -r edge -a amd64</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">and then take a look at the loop file that got created. This is the</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">format we support.</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Christian</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br class="">Thanks,<br class="">Todor<br class=""><br class=""><blockquote type="cite" class="">On 15. Jun 2018, at 17:50, Christian Brauner <<a href="mailto:christian@brauner.io" class="">christian@brauner.io</a>> wrote:<br class=""><br class="">On Fri, Jun 15, 2018 at 05:02:50PM +0200, Dr. Todor Dimitrov wrote:<br class=""><blockquote type="cite" class="">Hallo Christian,<br class=""><br class="">do I have to manually perform the loop mount? I thought this was done by the LXC runtime.<br class=""></blockquote><br class="">Yes, the mount is performed. If you have manually prepared an image you<br class="">can do:<br class=""><br class="">lxc.rootfs.path = loop:/path/to/file<br class=""><br class=""><blockquote type="cite" class=""><br class="">What is actually meant by “image file” inside the documentation:<br class=""><br class="">“<br class="">lxc.rootfs.path - specify the root file system for the container. It can be an image file, a directory or a block device. If not specified, the container shares its root file system with the host.<br class="">"<br class=""><br class="">Todor<br class=""><br class=""><blockquote type="cite" class="">On 15. Jun 2018, at 16:39, Christian Brauner <<a href="mailto:christian@brauner.io" class="">christian@brauner.io</a>> wrote:<br class=""><br class="">On Fri, Jun 15, 2018 at 10:28:34AM +0200, Dr. Todor Dimitrov wrote:<br class=""><blockquote type="cite" class="">Hallo,<br class=""><br class="">is it possible to use an image file with “lxc.rootfs.path” for an<br class="">unprivileged container? If possible, is it necessary to have the<br class="">correct file ownerships within the image or are these automatically<br class="">adjusted on start, e.g. on mount.<br class=""></blockquote><br class="">If by image you mean something you can mount on a loop device then yes<br class="">but it will have to be idshifted before the start.<br class=""><br class="">Christian<br class=""><br class=""><blockquote type="cite" class=""><br class="">Thanks in advance,<br class="">Todor<br class=""><br class=""></blockquote><br class=""><br class=""><br class=""><blockquote type="cite" class="">_______________________________________________<br class="">lxc-users mailing list<br class=""><a href="mailto:lxc-users@lists.linuxcontainers.org" class="">lxc-users@lists.linuxcontainers.org</a><br class=""><a href="http://lists.linuxcontainers.org/listinfo/lxc-users" class="">http://lists.linuxcontainers.org/listinfo/lxc-users</a><br class=""></blockquote><br class="">_______________________________________________<br class="">lxc-users mailing list<br class=""><a href="mailto:lxc-users@lists.linuxcontainers.org" class="">lxc-users@lists.linuxcontainers.org</a><br class=""><a href="http://lists.linuxcontainers.org/listinfo/lxc-users" class="">http://lists.linuxcontainers.org/listinfo/lxc-users</a><br class=""></blockquote><br class=""></blockquote><br class=""><br class=""><br class=""><blockquote type="cite" class="">_______________________________________________<br class="">lxc-users mailing list<br class=""><a href="mailto:lxc-users@lists.linuxcontainers.org" class="">lxc-users@lists.linuxcontainers.org</a><br class=""><a href="http://lists.linuxcontainers.org/listinfo/lxc-users" class="">http://lists.linuxcontainers.org/listinfo/lxc-users</a><br class=""></blockquote><br class="">_______________________________________________<br class="">lxc-users mailing list<br class=""><a href="mailto:lxc-users@lists.linuxcontainers.org" class="">lxc-users@lists.linuxcontainers.org</a><br class=""><a href="http://lists.linuxcontainers.org/listinfo/lxc-users" class="">http://lists.linuxcontainers.org/listinfo/lxc-users</a><br class=""></blockquote><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">_______________________________________________<br class="">lxc-users mailing list<br class=""><a href="mailto:lxc-users@lists.linuxcontainers.org" class="">lxc-users@lists.linuxcontainers.org</a><br class=""><a href="http://lists.linuxcontainers.org/listinfo/lxc-users" class="">http://lists.linuxcontainers.org/listinfo/lxc-users</a><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; 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