what is the most suitable installation environment to install NOVA fs

[thomas-huangTw]

i have already try to install NOVA fs on ubuntu 18.04.1(kernel version 4.15.0-109-generic) VM. I am executing a set of commands:

1. root@nova:~# git clone https://github.com/NVSL/linux-nova.git

2. root@nova:~# cd ./linux-nova-5.1

3. root@nova:~# make menuconfig

   Device Drivers  --->
       <*> NVDIMM (Non-Volatile Memory Device) Support  --->
           <*>   PMEM: Persistent memory block device support (NEW)
           <*>   BLK: Block data window (aperture) device support (NEW)
           [*]   BTT: Block Translation Table (atomic sector updates)
   Processor type and features  --->
       <*> Support non-standard NVDIMMs and ADR protected memory
   Memory Management options  --->
       [*] Allow for memory hot-add
       [*]   Online the newly added memory blocks by default
       [*]   Allow for memory hot remove
       [*] Device memory (pmem, HMM, etc...) hotplug support
   File systems  --->
       [*] Direct Access (DAX) support

   CONFIG_LIBNVDIMM=y CONFIG_BLK_DEV_PMEM=y CONFIG_FS_DAX=y CONFIG_NOVA_FS=m

4. root@nova:~# make -j4

5. root@nova:~# make modules_install

6. root@nova:~# make install

vim /etc/default/grub
GRUB_CMDLINE_LINUX="memmap=512M!4096M"

7. root@nova:~# modprobe nova

   modprobe: FATAL: Module nova not found in directory /lib/modules/4.15.0-109-generic

What else needs to be done? Or what is the most suitable ubuntu installation environment to install NOVA fs(version 18 or higher, cause need to install cdctl and impctl tool)?

[Andiry]

You are building NOVA kernel 5.1 on a 4.15 kernel. After building you have to install the kernel and reboot to the 5.1 kernel. Then modprobe should work.

On Mon, Jul 6, 2020, 00:45 thomashuang notifications@github.com wrote:

i have already try to install NOVA fs on ubuntu 18.04.1(kernel version 4.15.0-109-generic) VM. I am executing a set of commands:

1. root@nova:~# git clone https://github.com/NVSL/linux-nova.git https://urldefense.com/v3/__https://github.com/NVSL/linux-nova.git__;!!Mih3wA!VoWhkLIaAEnEwGLd8q0LV7zH9a1WEfkkaUX1Tgh4fQy1VrEIxXc3qq16MqfkUJROcoVC$
2. root@nova:~# cd ./linux-nova-5.1
3. root@nova:~# make menuconfig

Device Drivers ---> <> NVDIMM (Non-Volatile Memory Device) Support ---> <> PMEM: Persistent memory block device support (NEW) <> BLK: Block data window (aperture) device support (NEW) [] BTT: Block Translation Table (atomic sector updates) Processor type and features ---> <> Support non-standard NVDIMMs and ADR protected memory Memory Management options ---> [] Allow for memory hot-add [] Online the newly added memory blocks by default [] Allow for memory hot remove [] Device memory (pmem, HMM, etc...) hotplug support File systems ---> [] Direct Access (DAX) support

CONFIG_LIBNVDIMM=y CONFIG_BLK_DEV_PMEM=y CONFIG_FS_DAX=y CONFIG_NOVA_FS=m

1. root@nova:~# make -j4
2. root@nova:~# make modules_install
3. root@nova:~# make install

vim /etc/default/grubGRUB_CMDLINE_LINUX="memmap=512M!4096M"

1. root@nova:~# modprobe nova

modprobe: FATAL: Module nova not found in directory /lib/modules/4.15.0-109-generic

What else needs to be done? Or what is the most suitable ubuntu installation environment to install NOVA fs(version 18 or higher, cause need to install cdctl and impctl tool)?

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[thomas-huangTw]

after upgrade kernel to 5.1.0, as below:

root@nova:~# uname -r
5.1.0-050100-generic
root@nova:~# lsb_release -a
Description:    Ubuntu 18.04.4 LTS
Release:    18.04
Codename:   bionic

and i install again: root@nova:~# make menuconfig

Device Drivers  --->
        <*> NVDIMM (Non-Volatile Memory Device) Support  --->
            <*>   PMEM: Persistent memory block device support (NEW)
            <*>   BLK: Block data window (aperture) device support (NEW)
            [*]   BTT: Block Translation Table (atomic sector updates)
    Processor type and features  --->
        <*> Support non-standard NVDIMMs and ADR protected memory
    Memory Management options  --->
        [*] Allow for memory hot-add
        [*]   Online the newly added memory blocks by default
        [*]   Allow for memory hot remove
        [*] Device memory (pmem, HMM, etc...) hotplug support
    File systems  --->
        [*] Direct Access (DAX) support
        <M>   NOVA: log-structured file system for non-volatile memories

CONFIG_LIBNVDIMM=y 
CONFIG_BLK_DEV_PMEM=y
CONFIG_FS_DAX=y
CONFIG_NOVA_FS=m

1. root@nova:~# make -j4
2. root@nova:~# make modules_install
3. root@nova:~# make install

but i still get : root@nova:~# modprobe nova modprobe: FATAL: Module nova not found in directory /lib/modules/5.1.0-050100-generic

What else needs to be done? Or what is the most suitable ubuntu installation environment to install NOVA fs(version 18 or higher, cause need to install cdctl and impctl tool)?

[Andiry]

I think there is a misunderstanding somehow. The 5.1.0-050100-generic kernel you upgrade to is from Ubuntu, I guess? It is not the linux-nova kernel (also 5.1) that contains NOVA module.

After the make install command:

root@nova:~# make -j4 root@nova:~# make modules_install root@nova:~# make install

Reboot the system (or VM), in grub, boot into the 5.1 kernel installed (not the 5.1.0-050100-generic one), and then try modprobe.

BTW: I suggest trying NOVA on bare-metal machine, not VM. We have seen some issues with NOVA running on VM.