Arch Linux

iamkarlson

Member

Registered: 2023-01-17

Posts: 28

[SOLVED]Configure sleep/hibernation without a dedicated swap partition

When I was installing my system, I used archinstall. I relied on a "recommended" disk layout and overlooked swap settings. Luckily, archinstall conveniently set up swap on zram. To make things worse, I had to enable disk encryption, and now things are a bit more complicated.

I'm now trying to set up sleep/hibernation, and arch wiki isn't helpful for my setup. What would be the most advisable way to proceed with sleep configuration?

Here's output of some commands:

$ sudo fdisk -l
Disk /dev/nvme0n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 980 PRO 1TB                 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 5C80754F-F1EA-4972-A100-4D3CE9B167C1

Device           Start        End    Sectors  Size Type
/dev/nvme0n1p1    2048    1048575    1046528  511M EFI System
/dev/nvme0n1p2 1050624 1953523711 1952473088  931G Linux filesystem


Disk /dev/mapper/cryptlvm: 931 GiB, 999649443840 bytes, 1952440320 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/zram0: 4 GiB, 4294967296 bytes, 1048576 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


$ df -h                   
Filesystem            Size  Used Avail Use% Mounted on
dev                    24G     0   24G   0% /dev
run                    24G  1.8M   24G   1% /run
/dev/mapper/cryptlvm  916G  254G  616G  30% /
tmpfs                  24G  223M   24G   1% /dev/shm
/dev/nvme0n1p1        510M   80M  431M  16% /boot
tmpfs                  24G   22M   24G   1% /tmp
tmpfs                 4.7G   48K  4.7G   1% /run/user/1000

$  cat /proc/swaps
Filename				Type		Size		Used		Priority
/dev/zram0                              partition	4194300		0		100

$ cat /etc/fstab 
# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# /dev/mapper/ainstnvme0n1p2
UUID=780a27dd-9f52-4bc2-9f2c-1a64a458e28f	/         	ext4      	rw,relatime	0 1

# /dev/nvme0n1p1
UUID=BAF6-89E9      	/boot     	vfat      	rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,err

Last edited by iamkarlson (2023-02-10 13:10:06)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,842

Website

Re: [SOLVED]Configure sleep/hibernation without a dedicated swap partition

You can't hibernate without swap. Just using zram won't work for that unless you hack the shit out of it. Probably best to shrink the root partition and add some real swap. Or add a permanent swap file, I suppose.

---

Jin, Jîyan, Azadî

iamkarlson

Member

Registered: 2023-01-17

Posts: 28

Re: [SOLVED]Configure sleep/hibernation without a dedicated swap partition

Yeah, apparently you can create a regular swap file and be fine with it. As an alternative, you can use suspend and it's already good enough for most cases.