[Kernel-packages] [Bug 1939177] Re: Ubuntu 20.04.2 LTS kernel 5.11.0-25 zfs send | receive broken

2021-08-09 Thread Michael Albert
I want to confirm that I'm also facing the same issue and that adding
the --no-resume option does indeed fix the issue for syncoid.

It does seem like the correct solution is to update the ZFS tools in the
HWE stack when the kernel is updated. However, there does not seem to be
a way to do this (short of compiling from source, which I would really
like to avoid). Is there any possibility of moving the LTS HWE stack to
a model where the ZFS tools are updated when the kernel module is
updated?

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Title:
  Ubuntu 20.04.2 LTS kernel 5.11.0-25 zfs send | receive broken

Status in zfs-linux package in Ubuntu:
  Confirmed

Bug description:
  https://github.com/openzfs/zfs/issues/12462

  Ubuntu 20.04.2 LTS
  Kernel: 5.11.0-25-generic #27~20.04.1-Ubuntu
  zfs-0.8.3-1ubuntu12.12
  zfs-kmod-2.0.2-1ubuntu5

  Trying to run zfs send | receive and getting an error:

  # zfs send  'rpool/home'@'autosnap_2020-08-01_00:59:01_monthly' | zfs receive 
 -s -F 'nas/rpool_backup/home'
  cannot receive: failed to read from stream
  cannot receive new filesystem stream: dataset does not exist

  This used to work before the recent Ubuntu kernel update from 5.8 to 5.11
  Kernel 5.8 came with zfs-kmod-0.8.4-1ubuntu11.2

  Ubuntu updates that broke it:

  Upgrade: linux-headers-generic-hwe-20.04:amd64 (5.8.0.63.71~20.04.45, 
5.11.0.25.27~20.04.10), linux-
  image-generic-hwe-20.04:amd64 (5.8.0.63.71~20.04.45, 5.11.0.25.27~20.04.10), 
linux-generic-hwe-20.04
  :amd64 (5.8.0.63.71~20.04.45, 5.11.0.25.27~20.04.10)

  Sending the zfs send part to a file works, but then sending the file
  to zfs receive also fails. The dump file size seems reasonable but the
  contents may not be correct.

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[Kernel-packages] [Bug 1840161] [NEW] Very severe regression in ZFS 0.7.12 in 18.04.3

2019-08-14 Thread Michael Albert
Public bug reported:

ZFS version 0.7.12 has a documented very severe regression on sending
and receiving datasets with dnodesize=auto set on the dataset (not
present in 0.7.9 or 0.8.1). This manifests itself primarily when sending
and receiving datasets with lots of files, such as happens if root is on
ZFS. This issue has been documented on the ZFSonlinux git repositories
in issues:

https://github.com/zfsonlinux/zfs/issues/9147

and

https://github.com/zfsonlinux/zfs/issues/8458

Since 0.7.12 was just brought into 18.04.3, this regression is now
affecting LTS. I'm opening this issue in the hopes that the fix is
backported to the LTS release

** Affects: zfs-linux (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: receive regression send zfs

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to zfs-linux in Ubuntu.
https://bugs.launchpad.net/bugs/1840161

Title:
  Very severe regression in ZFS 0.7.12 in 18.04.3

Status in zfs-linux package in Ubuntu:
  New

Bug description:
  ZFS version 0.7.12 has a documented very severe regression on sending
  and receiving datasets with dnodesize=auto set on the dataset (not
  present in 0.7.9 or 0.8.1). This manifests itself primarily when
  sending and receiving datasets with lots of files, such as happens if
  root is on ZFS. This issue has been documented on the ZFSonlinux git
  repositories in issues:

  https://github.com/zfsonlinux/zfs/issues/9147

  and

  https://github.com/zfsonlinux/zfs/issues/8458

  Since 0.7.12 was just brought into 18.04.3, this regression is now
  affecting LTS. I'm opening this issue in the hopes that the fix is
  backported to the LTS release

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1840161/+subscriptions

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