Public bug reported:

# Problem

When using swap in ZFS, system stops when you start using swap.

> stress --vm 100

if you doing swapoff will only occur OOM and the system will not stop.

# Environment

jehos@MacBuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Eoan Ermine (development branch)
Release:        19.10
Codename:       eoan

jehos@MacBuntu:~$ dpkg -l | grep zfs
ii  libzfs2linux                               0.8.1-1ubuntu13                  
   amd64        OpenZFS filesystem library for Linux
ii  zfs-initramfs                              0.8.1-1ubuntu13                  
   amd64        OpenZFS root filesystem capabilities for Linux - initramfs
ii  zfs-zed                                    0.8.1-1ubuntu13                  
   amd64        OpenZFS Event Daemon
ii  zfsutils-linux                             0.8.1-1ubuntu13                  
   amd64        command-line tools to manage OpenZFS filesystems

jehos@MacBuntu:~$ uname -a
Linux MacBuntu 5.3.0-13-generic #14-Ubuntu SMP Tue Sep 24 02:46:08 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

jehos@MacBuntu:~$ zpool list
bpool  1.88G  66.1M  1.81G        -         -      -     3%  1.00x    ONLINE  -
rpool   230G   124G   106G        -         -     9%    53%  1.00x    ONLINE  -

jehos@MacBuntu:~$ zfs get all rpool/swap
NAME        PROPERTY              VALUE                    SOURCE
rpool/swap  type                  volume                   -
rpool/swap  creation              목 10월 10 15:56 2019  -
rpool/swap  used                  2.13G                    -
rpool/swap  available             98.9G                    -
rpool/swap  referenced            72K                      -
rpool/swap  compressratio         1.11x                    -
rpool/swap  reservation           none                     default
rpool/swap  volsize               2G                       local
rpool/swap  volblocksize          4K                       -
rpool/swap  checksum              on                       default
rpool/swap  compression           zle                      local
rpool/swap  readonly              off                      default
rpool/swap  createtxg             34                       -
rpool/swap  copies                1                        default
rpool/swap  refreservation        2.13G                    local
rpool/swap  guid                  18209330213704683244     -
rpool/swap  primarycache          metadata                 local
rpool/swap  secondarycache        none                     local
rpool/swap  usedbysnapshots       0B                       -
rpool/swap  usedbydataset         72K                      -
rpool/swap  usedbychildren        0B                       -
rpool/swap  usedbyrefreservation  2.13G                    -
rpool/swap  logbias               throughput               local
rpool/swap  objsetid              393                      -
rpool/swap  dedup                 off                      default
rpool/swap  mlslabel              none                     default
rpool/swap  sync                  always                   local
rpool/swap  refcompressratio      1.11x                    -
rpool/swap  written               72K                      -
rpool/swap  logicalused           40K                      -
rpool/swap  logicalreferenced     40K                      -
rpool/swap  volmode               default                  default
rpool/swap  snapshot_limit        none                     default
rpool/swap  snapshot_count        none                     default
rpool/swap  snapdev               hidden                   default
rpool/swap  context               none                     default
rpool/swap  fscontext             none                     default
rpool/swap  defcontext            none                     default
rpool/swap  rootcontext           none                     default
rpool/swap  redundant_metadata    all                      default
rpool/swap  encryption            off                      default
rpool/swap  keylocation           none                     default
rpool/swap  keyformat             none                     default
rpool/swap  pbkdf2iters           0                        default

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

** Tags: eoan freeze swap zfs

You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

  When using swap in ZFS, system stops when you start using swap

To manage notifications about this bug go to:

ubuntu-bugs mailing list

Reply via email to