[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
** Changed in: zfs-linux (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
** Package changed: linux (Ubuntu) => zfs-linux (Ubuntu) ** Changed in: zfs-linux (Ubuntu) Status: Confirmed => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: zfs-linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
The proposed fixes are still Work-In-Progress, hopefully they will get merged into ZFS in the next few months. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
bah, still no fix over a year later -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
I'm using Focal with ZFS on root. I installed the docker snap package today and could not get the service to start. Logs show: 2020-07-04T17:15:20Z docker.dockerd[8105]: time="2020-07-04T12:15:20.381289131-05:00" level=error msg="failed to mount overlay: invalid argument" storage-driver=overlay2 2020-07-04T17:15:21Z docker.dockerd[8105]: failed to start daemon: error initializing graphdriver: driver not supported 2020-07-04T17:15:21Z systemd[1]: snap.docker.dockerd.service: Main process exited, code=exited, status=1/FAILURE I think this is the same issue except with docker instead of LXC. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
See also this upstream PR: https://github.com/openzfs/zfs/pull/9414 and the one before it: https://github.com/openzfs/zfs/pull/8667 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
I am arriving here as I would also like to run containers (docker) over a zpool as the storage backend. In my case, I am running Ubuntu Server (Focal) on a Pi 3B, I would ideally have root on zfs but with it being a Pi, I have not done this yet. I have an externally attached USB pool for real data and have left the OS as it is on the SD card, however, as the above says, I would like to move more of my systems towards ZFS with time and use Ubuntu-based distros and containers on a lot of them, where these can't be run under illumos as VMs. I have installed docker-rootless on this system, however due to kernel limitations, it is impossible to mount datasets as non-root on linux (long-standing issue, I am working on a bug report with details of options for a workaround and will attach), and using a noverlay over the top of zfs would be fine for me, as I can snapshot and work with the higher-level system and back up easily, even if not as fast as native zfs performance, however, the daemon will not start, and I have fallen back to the "vfs" driver on my data-root filesystem. Some googling hasn't indicated what feature(s) would be required in zfs for overlay to be used on top, docker's documentation doesn't seem to clarify anything, and searching for the "fstype=1" requirement in xfs, I find from the manual page for `mkfs.xfs`: ``` ftype=value This feature allows the inode type to be stored in the directory structure so that the readdir(3) and getdents(2) do not need to look up the inode to determine the inode type. ``` which perhaps is not the issue at hand. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
I hit this today, and filed bug 1873917 before dupe'ing it to this. I'd think that the main pain points are a.) using overlay in a container that is backed by zfs via lxd b.) using overlay when using zfs root (https://didrocks.fr/2019/10/11/ubuntu-zfs-support-in-19.10-zfs-on-root/) I attached a re-create https://launchpadlibrarian.net/475448177/test- overlay -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
I ran into this exactly as smoser described using using overlay in a container that is backed by zfs via lxd. I believe this will become more prevalent as people start to use zfs root with Focal 20.04. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
apport information
** Tags added: apport-collected xenial
** Description changed:
-- Configuration
# echo -e $(grep VERSION= /etc/os-release)\\nSIGNATURE=\"$(cat
/proc/version_signature)\"
VERSION="16.04.3 LTS (Xenial Xerus)"
SIGNATURE="Ubuntu 4.10.0-35.39~16.04.1-generic 4.10.17"
# dpkg --list | grep zfs
ii libzfs2linux0.6.5.6-0ubuntu18
ii zfs-doc 0.6.5.6-0ubuntu18
ii zfs-initramfs 0.6.5.6-0ubuntu18
ii zfs-zed 0.6.5.6-0ubuntu18
ii zfsutils-linux 0.6.5.6-0ubuntu18
-- Fault: Creating an overlay of multiple directories on a ZFS volume
does not work
# df /var/tmp
Filesystem Type 1K-blocks Used Available Use% Mounted on
tank07/var/tmp zfs 129916288 128 129916160 1% /var/tmp
# mkdir /var/tmp/{lower,middle,upper,workdir,overlay}
# mount -t overlay overlay
-olowerdir=/var/tmp/middle:/var/tmp/lower,upperdir=/var/tmp/upper,workdir=/var/tmp/workdir
/var/tmp/overlay
mount: wrong fs type, bad option, bad superblock on overlay,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
# dmesg|tail -1
[276328.438284] overlayfs: filesystem on '/var/tmp/upper' not supported as
upperdir
-- Control test 1: Creating an overlay of multiple directories on
another filesystem works
# df /tmp
Filesystem Type 1K-blocks Used Available Use% Mounted on
tmpfs tmpfs 1048576 133492915084 13% /tmp
# mkdir /tmp/{lower,middle,upper,workdir,overlay}
# mount -t overlay overlay
-olowerdir=/tmp/middle:/tmp/lower,upperdir=/tmp/upper,workdir=/tmp/workdir
/tmp/overlay
# mount | grep overlay
overlay on /tmp/overlay type overlay
(rw,relatime,lowerdir=/tmp/middle:/tmp/lower,upperdir=/tmp/upper,workdir=/tmp/workdir)
-- Control test 2: Creating an overlay using AuFS works on ZFS volume
and elsewhere
# mount -t aufs -obr=/tmp/lower:/tmp/middle:/tmp/upper:/tmp/workdir none
/tmp/overlay
# mount -t aufs
-obr=/var/tmp/lower:/var/tmp/middle:/var/tmp/upper:/var/tmp/workdir none
/var/tmp/overlay
# mount | grep aufs
none on /var/tmp/overlay type aufs (rw,relatime,si=9ead1ecae778b250)
none on /tmp/overlay type aufs (rw,relatime,si=9ead1ec9257d1250)
-- Remark
While the use of AuFS can be used as a workaround in the above scenario, AuFS
in turn will not work with [fuse.]glusterfs mounts (this has been documented
elsewhere). Given that OverlayFS is part of the (upstream) kernel and Ubuntu
now officially supports ZFS, the above should be fixed.
+ ---
+ AlsaDevices:
+ total 0
+ crw-rw 1 root audio 116, 1 Sep 18 16:12 seq
+ crw-rw 1 root audio 116, 33 Sep 18 16:12 timer
+ AplayDevices: Error: [Errno 2] No such file or directory
+ ApportVersion: 2.20.1-0ubuntu2.10
+ Architecture: amd64
+ ArecordDevices: Error: [Errno 2] No such file or directory
+ AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
+ DistroRelease: Ubuntu 16.04
+ IwConfig: Error: [Errno 2] No such file or directory
+ Lspci: Error: [Errno 2] No such file or directory
+ Lsusb: Error: [Errno 2] No such file or directory
+ MachineType: Red Hat KVM
+ NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
+ Package: linux (not installed)
+ PciMultimedia:
+
+ ProcFB: 0 cirrusdrmfb
+ ProcKernelCmdLine:
BOOT_IMAGE=/ROOT/ubuntu1604@/boot/vmlinuz-4.10.0-35-generic
root=ZFS=tank07/ROOT/ubuntu1604 ro
+ ProcVersionSignature: Ubuntu 4.10.0-35.39~16.04.1-generic 4.10.17
+ RelatedPackageVersions:
+ linux-restricted-modules-4.10.0-35-generic N/A
+ linux-backports-modules-4.10.0-35-generic N/A
+ linux-firmware 1.157.12
+ RfKill: Error: [Errno 2] No such file or directory
+ Tags: xenial
+ Uname: Linux 4.10.0-35-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+
+ _MarkForUpload: True
+ dmi.bios.date: 04/01/2014
+ dmi.bios.vendor: SeaBIOS
+ dmi.bios.version: 1.9.1-5.el7_3.3
+ dmi.chassis.type: 1
+ dmi.chassis.vendor: Red Hat
+ dmi.chassis.version: RHEL 7.3.0 PC (i440FX + PIIX, 1996)
+ dmi.modalias:
dmi:bvnSeaBIOS:bvr1.9.1-5.el7_3.3:bd04/01/2014:svnRedHat:pnKVM:pvrRHEL7.3.0PC(i440FX+PIIX,1996):cvnRedHat:ct1:cvrRHEL7.3.0PC(i440FX+PIIX,1996):
+ dmi.product.name: KVM
+ dmi.product.version: RHEL 7.3.0 PC (i440FX + PIIX, 1996)
+ dmi.sys.vendor: Red Hat
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1718761/+attachment/4954633/+files/CRDA.txt
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1718761
Title:
It's not possible to use OverlayFS (mount -t overlay) to stack
directories on a ZFS volume
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+subscriptions
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[Bug 1718761] Re: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume
** Attachment removed: "WifiSyslog.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954652/+files/WifiSyslog.txt ** Attachment removed: "UdevDb.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954651/+files/UdevDb.txt ** Attachment removed: "ProcModules.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954650/+files/ProcModules.txt ** Attachment removed: "ProcInterrupts.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954649/+files/ProcInterrupts.txt ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954648/+files/ProcEnviron.txt ** Attachment removed: "ProcCpuinfoMinimal.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954647/+files/ProcCpuinfoMinimal.txt ** Attachment removed: "ProcCpuinfo.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954646/+files/ProcCpuinfo.txt ** Attachment removed: "JournalErrors.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954645/+files/JournalErrors.txt ** Attachment removed: "CurrentDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954644/+files/CurrentDmesg.txt ** Attachment removed: "CRDA.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+attachment/4954643/+files/CRDA.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718761 Title: It's not possible to use OverlayFS (mount -t overlay) to stack directories on a ZFS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
