[Bug 2057693] Re: Activating autotrim results in high load average due to uninterruptible threads

2024-03-23 Thread trackwitz
** Bug watch added: github.com/openzfs/zfs/issues #15453
   https://github.com/openzfs/zfs/issues/15453

** Also affects: zfs via
   https://github.com/openzfs/zfs/issues/15453
   Importance: Unknown
   Status: Unknown

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Title:
  Activating autotrim results in high load average due to
  uninterruptible threads

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[Bug 2057913] Re: package zfs-dkms 2.1.5-1ubuntu6~22.04.3 failed to install/upgrade: »installiertes zfs-dkms-Skript des Paketes post-installation«-Unterprozess gab den Fehlerwert 10 zurück

2024-03-14 Thread trackwitz
The error occours because you are trying to build a dkms module for zfs version 
2.1.5 which only supports kernels up to version 5.18.x.
So there are some incompatabilities with your kernel because it's much newer 
causing the build to fail.

The only zfs version that supports kernel 6.7.x is zfs version 2.2.3,
however there are no Ubuntu packages available so it has to be build
from source.

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https://bugs.launchpad.net/bugs/2057913

Title:
  package zfs-dkms 2.1.5-1ubuntu6~22.04.3 failed to install/upgrade:
  »installiertes zfs-dkms-Skript des Paketes post-
  installation«-Unterprozess gab den Fehlerwert 10 zurück

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[Bug 2057693] [NEW] Activating autotrim results in high load average due to uninterruptible threads

2024-03-12 Thread trackwitz
Public bug reported:

When activating the autotrim feature on any ZFS version starting from
2.2.0 this will lead to a permanent increase of the load average (as
diplayed in top) due to an uninterruptible vdev_autotrim thread for each
vdev capable of TRIM.

This issue has been reported
(https://github.com/openzfs/zfs/issues/15453) as well as fixed
(https://github.com/openzfs/zfs/pull/15781) upstream but the fix is not
yet backported to Ubuntu.

Since this bug was introduced with version 2.2.0 both mantic as well as
noble are affected.

How to reproduce:
1. Create a pool with at least one TRIM-capable device
2. run "zpool set autotrim=on "
3. watch the output of "top" or "runtime" and see how the load average 
increases permanently even when the system is idle by one per vdev
4. running "ps aux | grep -w D" will show the broken threads:

[root@test ~]# ps aux | grep -w D\<
root7193  0.0  0.0  0 0 ?D<   13:07   0:00 
[vdev_autotrim]

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

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Title:
  Activating autotrim results in high load average due to
  uninterruptible threads

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