Public bug reported:
The 4gb RPI4 is more than capable of handling zfs.
( Even zfs root can be enabled manually with arm64 eoan builds using a variant
of the steps at https://github.com/zfsonlinux/zfs/wiki/Ubuntu-18.04-Root-on-ZFS
. )
Currently one has to install zfs-dkms for zfs support, but ideally one
would have zfs modules come with the standard arm64 kernel so that one
does not have to recompile zfs on the pi.
Example:
uname -a
Linux rpi4 5.3.0-1011-raspi2 #12-Ubuntu SMP Fri Nov 1 09:07:06 UTC 2019 aarch64
aarch64 aarch64 GNU/Linux
@rpi4:~$ zpool status
pool: bpool
state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(5) for details.
scan: scrub repaired 0B in 0 days 00:00:00 with 0 errors on Mon Nov 11
13:50:14 2019
config:
NAME STATE
READ WRITE CKSUM
bpool ONLINE
0 0 0
usb-Samsung_Flash_Drive_FIT_0309318110004882-0:0-part3 ONLINE
0 0 0
errors: No known data errors
pool: rpool
state: ONLINE
scan: scrub repaired 0B in 0 days 00:01:21 with 0 errors on Mon Nov 11
13:51:39 2019
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
sda4 ONLINE 0 0 0
errors: No known data errors
dkms status
zfs, 0.8.1, 5.3.0-1011-raspi2, aarch64: installed
@rpi4:~$ cat /proc/cpuinfo
processor : 0
BogoMIPS : 108.00
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
processor : 1
BogoMIPS : 108.00
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
processor : 2
BogoMIPS : 108.00
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
processor : 3
BogoMIPS : 108.00
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
Hardware : BCM2835
Revision : c03111
Serial : ---
Model : Raspberry Pi 4 Model B Rev 1.1
@rpi4:~$ free -m
total used free shared buff/cache available
Mem: 3791 883 2612 18 295 2836
Swap: 4095 0 4095
** Affects: linux-raspi2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1852119
Title:
Please add zfs modules to linux-raspi2
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