On Wed, Nov 1, 2017 at 2:18 PM, Christian Brauner <christian.brau...@mailbox.org> wrote: > On Wed, Oct 25, 2017 at 11:45:52AM +0200, Sedat Dilek wrote: >> [ Please CC me - I am not subscribed to lxc-users and debian-kernel MLs ] >> >> Hi, >> >> I am playing with LXC and OverlayFS. >> >> The Debian-kernel shipped with stretch64 fails when using lxc-copy for >> a snapshot. >> Later I tried the latest Debian-kernel from stretch-backports >> APT-repository [0] and the issue does *not* appear. >> >> Debian/stretch64 ships LXC v2.0.7. >> >> root# lxc-copy --version >> 2.0.7 >> >> [ Instructions to reproduce ] >> >> [ Create LXC-Container ] >> >> root# lxc-create -n stretch64-ovl -B overlayfs -t download -- -d >> debian -r stretch -a amd64 >> >> [ GOOD: linux-image-4.12.0-0.bpo.2-amd64 (4.12.13-1~bpo9+1) ] >> >> root# lxc-copy -n stretch64-ovl -N snapshot1 -B overlay -s >> --logfile=lxc-copy-log_kernel-bpo9.txt --logpriority=DEBUG >> >> [ BAD: linux-image-4.9.0-4-amd64 (4.9.51-1) ] >> >> root@iniza:~# lxc-copy -n stretch64-ovl -N snapshot2 -B overlay -s >> --logfile=lxc-copy-log_kernel-deb9.txt --logpriority=DEBUG >> >> I found lxc-issue #1395 [1] where a similiar problem was reported >> >> Can this be a kernel issue? > > Well, if the only different in your tests is the kernel then could be. But > there > also have been quite some changes to the liblxc codebase that should improve > general user experience wrt to the overlay storage driver. So you might want > to > test e.g. liblxc 2.1. If your environment allows you to do that. >
[ CC Evegeni (lxc debian maintainer team) ] Hi Christian, The background is a student project where we use Debian/stretch as a base for the lxc-containers. So upgrading liblxc is problematic. I asked Evgeni for a stretch-backport package of v2.0.9 - I can test with that and report when the package is available. The issue in [1] is similiar and has status "incomplete"? What was missing? How can I help? Thanks, - Sedat - [1] https://github.com/lxc/lxc/issues/1395 >> >> Miklos and Christian any idea? >> >> Do you need further informations and/or have instructions on debugging this? >> >> Thanks for any hints. >> >> Regards, >> - Sedat - >> >> P.S.: I have attached the LXC configs of stretch64-ovl & snaptshot1 >> and the lxc-copy logfiles. >> >> [0] https://backports.debian.org/Instructions/ >> [1] https://github.com/lxc/lxc/issues/1395 > >> lxc-copy 20171025093206.756 WARN lxc_confile - >> confile.c:config_pivotdir:1910 - lxc.pivotdir is ignored. It will soon >> become an error. >> lxc-copy 20171025093206.756 WARN lxc_confile - >> confile.c:config_pivotdir:1910 - lxc.pivotdir is ignored. It will soon >> become an error. >> lxc-copy 20171025093206.756 INFO lxcoverlay - >> bdev/lxcoverlay.c:ovl_mount:436 - Overlayfs: Mounted >> /var/lib/lxc/stretch64-ovl/rootfs onto /var/lib/lxc/stretch64-ovl/rootfs >> with options >> upperdir=/var/lib/lxc/stretch64-ovl/delta0,lowerdir=/var/lib/lxc/stretch64-ovl/rootfs,workdir=/var/lib/lxc/stretch64-ovl/olwork. >> lxc-copy 20171025093206.757 INFO lxcoverlay - >> bdev/lxcoverlay.c:ovl_mount:436 - Overlayfs: Mounted >> /var/lib/lxc/stretch64-ovl/rootfs onto /var/lib/lxc/snapshot2/rootfs with >> options >> upperdir=/var/lib/lxc/snapshot2/delta0,lowerdir=/var/lib/lxc/stretch64-ovl/rootfs,workdir=/var/lib/lxc/snapshot2/olwork. >> lxc-copy 20171025093207.420 ERROR lxcoverlay - >> bdev/lxcoverlay.c:ovl_rsync:717 - rsyncing /var/lib/lxc/stretch64-ovl/rootfs >> to /var/lib/lxc/snapshot2/rootfs >> lxc-copy 20171025093207.421 ERROR lxcoverlay - >> bdev/lxcoverlay.c:ovl_do_rsync:757 - copying overlayfs delta >> lxc-copy 20171025093207.421 ERROR bdev - bdev/bdev.c:bdev_copy:388 >> - failed getting pathnames for cloned storage: >> overlayfs:/var/lib/lxc/stretch64-ovl/rootfs:/var/lib/lxc/stretch64-ovl/delta0 >> lxc-copy 20171025093207.422 ERROR lxc_container - >> lxccontainer.c:copy_storage:2867 - Error copying storage. >> lxc-copy 20171025093207.430 INFO lxc_container - >> lxccontainer.c:container_destroy:2414 - Destroyed directory for snapshot2 > > > >> lxc-copy 20171025091007.914 WARN lxc_confile - >> confile.c:config_pivotdir:1910 - lxc.pivotdir is ignored. It will soon >> become an error. >> lxc-copy 20171025091007.914 WARN lxc_confile - >> confile.c:config_pivotdir:1910 - lxc.pivotdir is ignored. It will soon >> become an error. >> lxc-copy 20171025091007.914 INFO lxcoverlay - >> bdev/lxcoverlay.c:ovl_mount:436 - Overlayfs: Mounted >> /var/lib/lxc/stretch64-ovl/rootfs onto /var/lib/lxc/stretch64-ovl/rootfs >> with options >> upperdir=/var/lib/lxc/stretch64-ovl/delta0,lowerdir=/var/lib/lxc/stretch64-ovl/rootfs,workdir=/var/lib/lxc/stretch64-ovl/olwork. >> lxc-copy 20171025091007.914 INFO lxcoverlay - >> bdev/lxcoverlay.c:ovl_mount:436 - Overlayfs: Mounted >> /var/lib/lxc/stretch64-ovl/rootfs onto /var/lib/lxc/snapshot1/rootfs with >> options >> upperdir=/var/lib/lxc/snapshot1/delta0,lowerdir=/var/lib/lxc/stretch64-ovl/rootfs,workdir=/var/lib/lxc/snapshot1/olwork. >> lxc-copy 20171025091008.114 INFO lxc_container - >> lxccontainer.c:copy_file:2641 - Error stat'ing >> /var/lib/lxc/stretch64-ovl/lxc_rdepends >> lxc-copy 20171025091008.114 INFO lxc_container - >> lxccontainer.c:copy_rdepends:2800 - Error copying reverse dependencies >> lxc-copy 20171025091008.136 INFO lxcoverlay - >> bdev/lxcoverlay.c:ovl_mount:436 - Overlayfs: Mounted >> /var/lib/lxc/stretch64-ovl/rootfs onto /usr/lib/x86_64-linux-gnu/lxc/rootfs >> with options >> upperdir=/var/lib/lxc/snapshot1/delta0,lowerdir=/var/lib/lxc/stretch64-ovl/rootfs,workdir=/var/lib/lxc/snapshot1/olwork. >> lxc-copy 20171025091008.136 INFO lxc_conf - >> conf.c:run_script_argv:424 - Executing script >> "/usr/share/lxc/hooks/clonehostname" for container "snapshot1", config >> section "lxc". >> lxc-copy 20171025091008.166 INFO lxc_copy_ui - >> tools/lxc_copy.c:do_clone:376 - Created snapshot1 as snapshot of >> stretch64-ovl >> > _______________________________________________ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users
