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Ekaradon

Member

Registered: 2014-05-31

Posts: 47

[Solved] Can't start systemd swap service

Hello,

Whenever I try to start systemd swap service I get this error:

> sudo /usr/bin/systemd-swap start                                                                                                                                                                                                                  
INFO: Load: /etc/systemd/swap.conf
No status data could be sent: $NOTIFY_SOCKET was not set
No status data could be sent: $NOTIFY_SOCKET was not set
INFO: Zswap: backup current configuration: start
INFO: Zswap: backup current configuration: complete
INFO: Zswap: set new parameters: start
INFO: Zswap: Enable: 1, Comp: lz4,  Max pool %: 25, Zpool: zbud
INFO: Zswap: set new parameters: complete
No status data could be sent: $NOTIFY_SOCKET was not set
INFO: swapD: pickup devices from systemd-gpt-auto-generator
INFO: swapD: searching swap devices
No status data could be sent: $NOTIFY_SOCKET was not set
ERRO: swapfc_frequency is not set to a valid integer value: 1s

With my swap.conf being the default one:

> cat /etc/systemd/swap.conf                                                                                                                                                                                                                   
################################################################################
# Defaults are optimized for general usage
################################################################################

################################################################################
# You can override any settings by files in:
# /etc/systemd/swap.conf.d/*.conf
################################################################################

################################################################################
# Zswap
#
# Kernel >= 3.11
# Zswap create compress cache between swap and memory for reduce IO
# https://www.kernel.org/doc/Documentation/vm/zswap.txt

zswap_enabled=1
zswap_compressor=lz4      # lzo lz4
zswap_max_pool_percent=25 # 1-99
zswap_zpool=zbud          # zbud z3fold

################################################################################
# ZRam
#
# Kernel >= 3.15
# Zram compression streams count for additional information see:
# https://www.kernel.org/doc/Documentation/blockdev/zram.txt

zram_enabled=0
zram_size=$(($RAM_SIZE/4))      # This is 1/4 of ram size by default.
zram_streams=$NCPU
zram_alg=lz4                    # lzo lz4 deflate lz4hc 842 - for Linux 4.8.4
zram_prio=32767                 # 1 - 32767

################################################################################
# Swap File Chunked
# Allocate swap files dynamically
# For btrfs fallback to swapfile + loop will be used
# ex. Min swap size 512M, Max 8*512M
swapfc_enabled=1
swapfc_force_use_loop=0     # Force usage of swapfile + loop
swapfc_frequency=1s         # How often check free swap space
swapfc_chunk_size=1024M      # Allocate size of swap chunk
swapfc_max_count=32          # 0 - unlimited, note: 32 is a kernel maximum
swapfc_free_swap_perc=20    # Add new chunk if free < 15%
                            # Remove chunk if free > 15+40% & chunk count > 2
swapfc_path=/var/lib/systemd-swap/swapfc/
# Only for swapfile + loop
swapfc_nocow=1              # Disable CoW on swapfile
swapfc_directio=1           # Use directio for loop dev
swapfc_force_preallocated=0 # Will preallocate created files

################################################################################
# Swap devices
# Find and auto swapon all available swap devices
swapd_auto_swapon=1
swapd_prio=1024

I don't understand why it is complaining about the swapfc_frequency as it looks like the default and standard value from what I can see. Is there someone having any idea about what is happening here? It confuses me a lot.

Last edited by Ekaradon (2020-07-09 08:30:42)

loqs

Member

Registered: 2014-03-06

Posts: 19,059

Re: [Solved] Can't start systemd swap service

https://bbs.archlinux.org/viewtopic.php?id=256414

Ekaradon

Member

Registered: 2014-05-31

Posts: 47

Re: [Solved] Can't start systemd swap service

Thanks, it works!