Thanks for the policy clarification. But as I understand it "4 GiB of memory is recommended for normal performance in basic workloads" referred to 4Gb of memory in total, not 4gb of free memory.
I'll ask again once there is a device with more than 4Gb of RAM, but FYI, since the raspberry pi may often be used for single tasks, a 4Gb ram machine might be just fine with that zfs overhead. (I haven't seen any memory pressure issues with multiple headless 4Gb Pi4 machines running with ubuntu on zfs.) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1852119 Title: Please add zfs modules to linux-raspi2 Status in linux-raspi2 package in Ubuntu: Won't Fix Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1852119/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
