Re: Disable btrfs memory swap file

2023-06-26 Thread Samuel Sieb

On 6/26/23 23:20, Jeffrey Walton wrote:

On Tue, Jun 27, 2023 at 2:14 AM Samuel Sieb  wrote:


On 6/26/23 20:48, Jeffrey Walton wrote:


I've got a Fedora 38 install (upgrade from F37). The install happened
with Anaconda. Anaconda created the compressed memory swap file. I
resized the disk and added a proper swap partition. Now I need to
modify /etc/fstab and disable the compressed memory swap file. In the
screen text below, /dev/nvme0n1p4 is the new partition.

My Google-fu really sucks today. I cannot find a discussion of it.

How do I modify fstab to remove the compressed memory swap file?


Why would you want to?


The compiler is crashing in cc1plus. I'm out-of-memory on a machine
with 16GB of RAM. Effectively I'm DoS'd with the btrfs default
strategy. Time to do something different... like get rid of that
compressed swap file in RAM, use a real swap file, and use memory for
programs.


It has nothing to do with btrfs.  That's just the default and it works 
really well.  You get lots of "extra" memory without the lag of going to 
the disk.  You could add the disk swap as well.  You don't have to 
remove the zram for that.

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Re: Disable btrfs memory swap file

2023-06-26 Thread Jeffrey Walton
On Tue, Jun 27, 2023 at 2:14 AM Samuel Sieb  wrote:
>
> On 6/26/23 20:48, Jeffrey Walton wrote:
> >
> > I've got a Fedora 38 install (upgrade from F37). The install happened
> > with Anaconda. Anaconda created the compressed memory swap file. I
> > resized the disk and added a proper swap partition. Now I need to
> > modify /etc/fstab and disable the compressed memory swap file. In the
> > screen text below, /dev/nvme0n1p4 is the new partition.
> >
> > My Google-fu really sucks today. I cannot find a discussion of it.
> >
> > How do I modify fstab to remove the compressed memory swap file?
>
> Why would you want to?

The compiler is crashing in cc1plus. I'm out-of-memory on a machine
with 16GB of RAM. Effectively I'm DoS'd with the btrfs default
strategy. Time to do something different... like get rid of that
compressed swap file in RAM, use a real swap file, and use memory for
programs.

> The easiest way would be to remove the "zram-generator" package.  I
> don't know off-hand how to disable a generator.

Thanks.

Jeff
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Re: Disable btrfs memory swap file

2023-06-26 Thread Samuel Sieb

On 6/26/23 20:48, Jeffrey Walton wrote:

Hi Everyone,

I've got a Fedora 38 install (upgrade from F37). The install happened
with Anaconda. Anaconda created the compressed memory swap file. I
resized the disk and added a proper swap partition. Now I need to
modify /etc/fstab and disable the compressed memory swap file. In the
screen text below, /dev/nvme0n1p4 is the new partition.

My Google-fu really sucks today. I cannot find a discussion of it.

How do I modify fstab to remove the compressed memory swap file?


Why would you want to?

The easiest way would be to remove the "zram-generator" package.  I 
don't know off-hand how to disable a generator.

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Disable btrfs memory swap file

2023-06-26 Thread Jeffrey Walton
Hi Everyone,

I've got a Fedora 38 install (upgrade from F37). The install happened
with Anaconda. Anaconda created the compressed memory swap file. I
resized the disk and added a proper swap partition. Now I need to
modify /etc/fstab and disable the compressed memory swap file. In the
screen text below, /dev/nvme0n1p4 is the new partition.

My Google-fu really sucks today. I cannot find a discussion of it.

How do I modify fstab to remove the compressed memory swap file?

Thanks in advance.

---

$ sudo blkid
[sudo] password for jwalton:
/dev/nvme0n1p3: LABEL="fedora_localhost-live"
UUID="c9556f10-0bc7-4018-829f-7a892300b2e0"
UUID_SUB="12db21cb-7e46-4878-a52f-4a8be1e29525" BLOCK_SIZE="4096"
TYPE="btrfs" PARTLABEL="fedora"
PARTUUID="6513b9de-51e5-4714-942f-2d2c315f3a3c"
/dev/nvme0n1p1: UUID="B78D-F611" BLOCK_SIZE="512" TYPE="vfat"
PARTLABEL="EFI System Partition"
PARTUUID="94c2d79e-02a3-4af8-bb8c-e62a1ebadf47"
/dev/nvme0n1p4: UUID="26b85275-6dc9-4ffa-914c-e992d216a3e6"
TYPE="swap" PARTUUID="5a906783-7377-48b8-ab47-c0f45d861171"
/dev/nvme0n1p2: UUID="27d17ecd-07db-46e6-ace5-6edbfd06724f"
BLOCK_SIZE="4096" TYPE="ext4"
PARTUUID="44d9d521-cf65-414d-ba2b-f69927b5bcab"
/dev/zram0: LABEL="zram0" UUID="823c4078-30b0-489e-8f48-5b818696680d"
TYPE="swap"

$ cat /etc/fstab
# /etc/fstab
# ...
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
UUID=c9556f10-0bc7-4018-829f-7a892300b2e0 /
btrfs   subvol=root,compress=zstd:1 0 0
UUID=27d17ecd-07db-46e6-ace5-6edbfd06724f /boot   ext4
   defaults1 2
UUID=B78D-F611  /boot/efi   vfat
umask=0077,shortname=winnt 0 2
UUID=c9556f10-0bc7-4018-829f-7a892300b2e0 /home
btrfs   subvol=home,compress=zstd:1 0 0

$ sudo blkid
[sudo] password for jwalton:
/dev/nvme0n1p3: LABEL="fedora_localhost-live"
UUID="c9556f10-0bc7-4018-829f-7a892300b2e0"
UUID_SUB="12db21cb-7e46-4878-a52f-4a8be1e29525" BLOCK_SIZE="4096"
TYPE="btrfs" PARTLABEL="fedora"
PARTUUID="6513b9de-51e5-4714-942f-2d2c315f3a3c"
/dev/nvme0n1p1: UUID="B78D-F611" BLOCK_SIZE="512" TYPE="vfat"
PARTLABEL="EFI System Partition"
PARTUUID="94c2d79e-02a3-4af8-bb8c-e62a1ebadf47"
/dev/nvme0n1p4: UUID="26b85275-6dc9-4ffa-914c-e992d216a3e6"
TYPE="swap" PARTUUID="5a906783-7377-48b8-ab47-c0f45d861171"
/dev/nvme0n1p2: UUID="27d17ecd-07db-46e6-ace5-6edbfd06724f"
BLOCK_SIZE="4096" TYPE="ext4"
PARTUUID="44d9d521-cf65-414d-ba2b-f69927b5bcab"
/dev/zram0: LABEL="zram0" UUID="823c4078-30b0-489e-8f48-5b818696680d"
TYPE="swap"
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Re: Nvidia Driver Turned Off?

2023-06-26 Thread Barry


> On 26 Jun 2023, at 09:08, Stephen Morris  wrote:
> 
> I was just expecting the kmod/akmod nvidia drivers the system was using when 
> I did the upgrade would still be being used until I rebooted, but that seemed 
> to not be the case.

The upgrade does not do anything to the already loaded kernel modules.
You must reboot to be able to use the new drivers.
Until then the system uses the old, already loaded, drivers.

Maybe there is user mode code that was upgraded that caused the issue?

Barry



Barry
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Re: Nvidia Driver Turned Off?

2023-06-26 Thread Stephen Morris

On 26/6/23 03:47, Barry Scott wrote:


On 25/06/2023 13:20, George N. White III wrote:
You should check the version of the nvidea drivers you are currently 
using.
If you don't want to wait 5 minutes there are ways to determine that 
the installation

has finished, e.g, using journalctl.


The way I use to figure out its safe to reboot is to check for an 
running jobs using:


    systemctl list-jobs

That will show the akmods service running after you do the dnf update.

Once list-jobs is empty you can reboot.

I have that scripted into into code I use to update and reboot my 
fedora machines.


Barry
Thankyou for the responses everyone. I'm using the kmod and akmod nvidia 
drivers from the rpmfusion repositories and I didn't do a reboot after 
the upgrade, I accessed an email containing a link into one of the games 
I play through firefox, but it would not run because it could believed 
hardware acceleration was disabled, and I know hardware acceleration for 
this game doesn't work with the nouveau drivers.
I was just expecting the kmod/akmod nvidia drivers the system was using 
when I did the upgrade would still be being used until I rebooted, but 
that seemed to not be the case.


regards,
Steve



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