Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On Fri, 2015-11-06 at 22:17 +0100, Chris Murphy wrote:
> If only /home is btrfs, it's sufficiently late that the btrfs kernel
> module doesn't need to be in the initrd. So I'd be looking at other
> failures.
> 
> If by manual mount you mean the complete command:
> 
> mount -t btrfs /dev/sdaX /home
> 
> and not
> 
> mount /home
> 
> Then that's kinda weird for it to fail. I've been using 4.2.3 for a
> long time, up until a couple days ago, and now on 4.2.5, and have had
> no btrfs related issues at all, let alone with mounting.

The latest kernel update fixed it, whatever it was. I must say I was
surprised something like this had made it past testing without being a
blocker, but I've no idea what actually caused it. In any case, it's
gone.

poc
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Re: BTRFS and Nvidia broken on F23

[Tom Horsley]

On Fri, 06 Nov 2015 23:06:11 +
Patrick O'Callaghan wrote:

> The latest kernel update fixed it

I had something similar happen when I added a raid
to my system once. Merely doing a dracut -f
didn't make it work on one of my boot partitions.
It wasn't until I installed a new kernel in
that partition that it worked. I suspect something
is needed more than just getting a module loaded
sometimes, though I have no idea what it
might be.
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Re: BTRFS and Nvidia broken on F23

[Chris Murphy]

If only /home is btrfs, it's sufficiently late that the btrfs kernel
module doesn't need to be in the initrd. So I'd be looking at other
failures.

If by manual mount you mean the complete command:

mount -t btrfs /dev/sdaX /home

and not

mount /home

Then that's kinda weird for it to fail. I've been using 4.2.3 for a
long time, up until a couple days ago, and now on 4.2.5, and have had
no btrfs related issues at all, let alone with mounting.


Chris Murphy
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Re: BTRFS and Nvidia broken on F23 - SOLVED (partly)

[Stephen Berg (Contractor)]

On 11/05/2015 04:59 AM, Patrick O'Callaghan wrote:

On 5 November 2015 at 10:40, Stephen Berg (Contractor) <
stephen.berg@nrlssc.navy.mil> wrote:


On 11/05/2015 04:33 AM, Patrick O'Callaghan wrote:


Now I just have to struggle with Nouveau settings to get decent screen
resolution until Nvidia drivers appear. Any suggestions would be welcome.

poc


I downgraded Xorg to 1.17 and installed the 352.55 driver from Nvidia.  So
far it's pretty stable in this setup.  Just have to keep an eye out for the
Nvidia drivers to catch up and to not update Xorg until then.


How exactly did you do the downgrade? I tried by removing xorg-* and
running dnf install xorg* with --releasever=22, followed by dnf downgrade,
but it didn't work. The kmod-nvidia gave a dependency error on
nvidia-common-something.

dnf --showduplicates --allowerasing --releasever=22 downgrade 
xorg-x11-server-Xorg


I had removed all nvidia packages before I ran that.  After I got Xorg 
downgraded to 1.17 I ran the installer package for the Nvidia driver 
that I downloaded from www.geforce.com/drivers


My system is stable in that config, so I didn't try to get a kmod or 
akmod driver package installed.  Let the sleeping dog lie!


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Re: BTRFS and Nvidia broken on F23 - SOLVED (partly)

[Patrick O'Callaghan]

On 4 November 2015 at 00:28, Patrick O'Callaghan 
wrote:

> I updated to F23 using the approved dnf method, with no errors. Now I have
> an unusable system because /home is not being mounted.


This just in: updating to kernel 4.2.5-300.fc23.x86_64 has fixed the btrfs
issue.

Now I just have to struggle with Nouveau settings to get decent screen
resolution until Nvidia drivers appear. Any suggestions would be welcome.

poc
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Re: BTRFS and Nvidia broken on F23 - SOLVED (partly)

[Stephen Berg (Contractor)]

On 11/05/2015 04:33 AM, Patrick O'Callaghan wrote:

Now I just have to struggle with Nouveau settings to get decent screen
resolution until Nvidia drivers appear. Any suggestions would be welcome.

poc
I downgraded Xorg to 1.17 and installed the 352.55 driver from Nvidia.  
So far it's pretty stable in this setup.  Just have to keep an eye out 
for the Nvidia drivers to catch up and to not update Xorg until then.



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Re: BTRFS and Nvidia broken on F23 - SOLVED (partly)

[Patrick O'Callaghan]

On 5 November 2015 at 11:05, Stephen Berg (Contractor) <
stephen.berg@nrlssc.navy.mil> wrote:

> How exactly did you do the downgrade? I tried by removing xorg-* and
>> running dnf install xorg* with --releasever=22, followed by dnf downgrade,
>> but it didn't work. The kmod-nvidia gave a dependency error on
>> nvidia-common-something.
>>
>> dnf --showduplicates --allowerasing --releasever=22 downgrade
> xorg-x11-server-Xorg
>
> I had removed all nvidia packages before I ran that.  After I got Xorg
> downgraded to 1.17 I ran the installer package for the Nvidia driver that I
> downloaded from www.geforce.com/drivers
>
> My system is stable in that config, so I didn't try to get a kmod or akmod
> driver package installed.  Let the sleeping dog lie!
>

Thanks, that's good to know. I think I'll stick with Nouveau for the time
being as it's now working acceptably (I had forgotten to remove all the
Nvidia stuff, which apparently is the only reasonable way to get Nouveau to
activate correctly). Hopefully the new Nvidia drivers will be out soon.

poc
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Re: BTRFS and Nvidia broken on F23 - SOLVED (partly)

[Patrick O'Callaghan]

On 5 November 2015 at 10:40, Stephen Berg (Contractor) <
stephen.berg@nrlssc.navy.mil> wrote:

> On 11/05/2015 04:33 AM, Patrick O'Callaghan wrote:
>
>> Now I just have to struggle with Nouveau settings to get decent screen
>> resolution until Nvidia drivers appear. Any suggestions would be welcome.
>>
>> poc
>>
> I downgraded Xorg to 1.17 and installed the 352.55 driver from Nvidia.  So
> far it's pretty stable in this setup.  Just have to keep an eye out for the
> Nvidia drivers to catch up and to not update Xorg until then.
>

How exactly did you do the downgrade? I tried by removing xorg-* and
running dnf install xorg* with --releasever=22, followed by dnf downgrade,
but it didn't work. The kmod-nvidia gave a dependency error on
nvidia-common-something.

poc
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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 21:24, Patrick O'Callaghan 
wrote:

> Does "modprobe -v btrfs" print anything, or does the command fail
>> silently?
>>
>
> Gives no output. "lsmod|grep btrfs" shows nothing.
>
>
>> Is this with SELinux enforcing? If so, have you tried with enforcing=0
>> yet? (or run "setenforce 0" as root before trying modprobe and the other
>> commands.
>>
>
> I tried with enforcing off. No difference.
>

I'm thinking that the btrfs problem is a red herring. I masked both btrfs
and NFS filesystems in /etc/fstab and rebooted. Now I get a very low-res
KDE login screen (which of course doesn't do any good as /home is not
mounted), but journalctl continues to show errors, in particular:

Unit var-lib-nfs-rpc_pipefs.mount has failed

Also, networking is off. I repeat, all NFS mounts are masked (commented
out).

poc
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Re: BTRFS and Nvidia broken on F23

[Gordon Messmer]

On 11/04/2015 01:24 PM, Patrick O'Callaghan wrote:


Does "modprobe -v btrfs" print anything, or does the command fail
silently?


Gives no output. "lsmod|grep btrfs" shows nothing.


And "dmesg" after that?
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Re: BTRFS and Nvidia broken on F23

[Rick Stevens]

On 11/04/2015 01:24 PM, Patrick O'Callaghan wrote:


On 4 November 2015 at 20:14, Michael Schwendt > wrote:

What kernel packages is this with? Do they verify fine?


core, tools, tools-libs, modules, modules-extra, headers and devel, all
4.2.3-300.fc23.x86_64
They all verify correctly, i.e. give only ..T.

Does "modprobe -v btrfs" print anything, or does the command fail
silently?


Gives no output. "lsmod|grep btrfs" shows nothing.


As root, try:

# find /lib/modules/`uname -r`/kernel/fs -name "*btrfs*"

And see if you get anything like this:

[root@golem4 ~]# find /lib/modules/`uname -r`/kernel/fs -name "*btrfs*"
/lib/modules/4.2.3-200.fc22.x86_64/kernel/fs/btrfs
/lib/modules/4.2.3-200.fc22.x86_64/kernel/fs/btrfs/btrfs.ko.xz

In other words, do you actually have the btrfs module in your kernel
tree? (the "btrfs.ko.xz" bit is the actual module)


Is this with SELinux enforcing? If so, have you tried with enforcing=0
yet? (or run "setenforce 0" as root before trying modprobe and the other
commands.


I tried with enforcing off. No difference


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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 22:07, Jon LaBadie  wrote:

> When I upgraded to F22, all fstab entries that said mount at boot
> had to succeed or the boot went to emergency mode.  For me it
> was an obscure sshfs mount that caused problems.
>
> Are any boot time mounts failing?
>

I have masked the btrfs and NFS ones. The others are normal ext4 and they
work.

poc
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Re: BTRFS and Nvidia broken on F23

[Jon LaBadie]

On Wed, Nov 04, 2015 at 09:48:05PM +, Patrick O'Callaghan wrote:
> On 4 November 2015 at 21:24, Patrick O'Callaghan 
> wrote:
> 
> > Does "modprobe -v btrfs" print anything, or does the command fail
> >> silently?
> >>
> > Gives no output. "lsmod|grep btrfs" shows nothing.
> >
> >> Is this with SELinux enforcing? If so, have you tried with enforcing=0
> >> yet? (or run "setenforce 0" as root before trying modprobe and the other
> >> commands.
> >
> > I tried with enforcing off. No difference.
> 
> I'm thinking that the btrfs problem is a red herring. I masked both btrfs
> and NFS filesystems in /etc/fstab and rebooted. Now I get a very low-res
> KDE login screen (which of course doesn't do any good as /home is not
> mounted), but journalctl continues to show errors, in particular:
> 
> Unit var-lib-nfs-rpc_pipefs.mount has failed
> 
> Also, networking is off. I repeat, all NFS mounts are masked (commented
> out).
> 

When I upgraded to F22, all fstab entries that said mount at boot
had to succeed or the boot went to emergency mode.  For me it
was an obscure sshfs mount that caused problems.

Are any boot time mounts failing?

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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 20:14, Michael Schwendt  wrote:

> What kernel packages is this with? Do they verify fine?
>

core, tools, tools-libs, modules, modules-extra, headers and devel, all
4.2.3-300.fc23.x86_64

They all verify correctly, i.e. give only ..T.

Does "modprobe -v btrfs" print anything, or does the command fail
> silently?
>

Gives no output. "lsmod|grep btrfs" shows nothing.


> Is this with SELinux enforcing? If so, have you tried with enforcing=0
> yet? (or run "setenforce 0" as root before trying modprobe and the other
> commands.
>

I tried with enforcing off. No difference.

poc
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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 21:48, Gordon Messmer 
wrote:

> On 11/04/2015 01:24 PM, Patrick O'Callaghan wrote:
>
>>
>> Does "modprobe -v btrfs" print anything, or does the command fail
>> silently?
>>
>>
>> Gives no output. "lsmod|grep btrfs" shows nothing.
>>
>
> And "dmesg" after that?
>

Nothing, i.e. dmesg before and after shows no change.

poc
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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 22:12, Rick Stevens  wrote:

> As root, try:
>
> # find /lib/modules/`uname -r`/kernel/fs -name "*btrfs*"
>
> And see if you get anything like this:
>
> [root@golem4 ~]# find /lib/modules/`uname -r`/kernel/fs -name
> "*btrfs*"
> /lib/modules/4.2.3-200.fc22.x86_64/kernel/fs/btrfs
> /lib/modules/4.2.3-200.fc22.x86_64/kernel/fs/btrfs/btrfs.ko.xz
>
> In other words, do you actually have the btrfs module in your kernel
> tree? (the "btrfs.ko.xz" bit is the actual module)
>

Yes, the module is really there (I had actually checked before).

poc
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Re: BTRFS and Nvidia broken on F23

[Michael Schwendt]

On Wed, 4 Nov 2015 20:18:17 +0200, Alchemist wrote:

> You should search for answer in system logs, why exactly btrfs module isn't
> loaded, usually debug data is being written in kernel log. If initram, boot
> params and fstab is not tampered by you or by not so successful upgrade
> then check logs, use fdisk,testdisk,btrfsck to confirm than partition table
> structure, partition id's and home partition is not damaged.

What kernel packages is this with? Do they verify fine?

Does "modprobe -v btrfs" print anything, or does the command fail
silently?

Is this with SELinux enforcing? If so, have you tried with enforcing=0
yet? (or run "setenforce 0" as root before trying modprobe and the other
commands)
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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 00:37, Alchemist  wrote:

> Boot F23, login console mode, check
>
> systemctl --failed
>

Failures for:

home.mount, proc-fs-nfsd.mount, several other local mounts and
var-lib-nfs-rpc_pipefs.mount


> systemctl status home.mount
>

Failed to mount /home


> rpm -qa | egrep "btrfs-progs|libblockdev"
>

All present and correct (F23)


> lsmod | grep btrfs
>

No output, so the btrfs module is not loading. Tried 'modprobe btrfs' and
no change.

poc
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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 11:16, Michael Schwendt  wrote:

> What does "cat /proc/filesystems" say about btrfs?
> If it's not listed there, does "modprobe btrfs ; mount /home" work then,
> at least?
>

/proc/filesystems does not contain btrfs. Modprobe makes no difference.

'lsinitrd|grep btrfs' gives no output.

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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 11:55, Patrick O'Callaghan 
wrote:

> On 4 November 2015 at 11:16, Michael Schwendt  wrote:
>
>> What does "cat /proc/filesystems" say about btrfs?
>> If it's not listed there, does "modprobe btrfs ; mount /home" work then,
>> at least?
>>
>
> /proc/filesystems does not contain btrfs. Modprobe makes no difference.
>
> 'lsinitrd|grep btrfs' gives no output.
>

"btrfs check" on the device works, however "btrfs dev scan" fails with:

failed to open /dev/btrfs-control

Google turned up
https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#I_get_the_message_.22failed_to_open_.2Fdev.2Fbtrfs-control_skipping_device_registration.22_from_.22btrfs_dev_scan.22

so I did a 'mknod /dev/btrfs-control c 10 234' but the scan still fails,
presumably because the module still isn't loaded, even after rebooting.

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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 11:55, Patrick O'Callaghan 
wrote:

> /proc/filesystems does not contain btrfs. Modprobe makes no difference.
>
> 'lsinitrd|grep btrfs' gives no output.
>

I should also mention that I ran 'dracut -f' but nothing changed.

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Re: BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

On 4 November 2015 at 08:01, Patrick O'Callaghan 
wrote:

> On 4 November 2015 at 11:55, Patrick O'Callaghan 
> wrote:
>
>> /proc/filesystems does not contain btrfs. Modprobe makes no difference.
>>
>> 'lsinitrd|grep btrfs' gives no output.
>>
>
> I should also mention that I ran 'dracut -f' but nothing changed.
>


Now testing the KDE Live version, which works, i.e. does detect and load
BTRFS. If I don't get this fixed soon I may have to bite the bullet and do
a clean install, but there is clearly something seriously wrong so it would
be nice to figure out what it is before I wipe the disk.

poc
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Re: BTRFS and Nvidia broken on F23

[Alchemist]

2015-11-04 19:06 GMT+02:00 Patrick O'Callaghan :

>
> On 4 November 2015 at 08:01, Patrick O'Callaghan 
> wrote:
>
>> On 4 November 2015 at 11:55, Patrick O'Callaghan 
>> wrote:
>>
>>> /proc/filesystems does not contain btrfs. Modprobe makes no difference.
>>>
>>> 'lsinitrd|grep btrfs' gives no output.
>>>
>>
>> I should also mention that I ran 'dracut -f' but nothing changed.
>>
>
>
> Now testing the KDE Live version, which works, i.e. does detect and load
> BTRFS. If I don't get this fixed soon I may have to bite the bullet and do
> a clean install, but there is clearly something seriously wrong so it would
> be nice to figure out what it is before I wipe the disk.
>


You should search for answer in system logs, why exactly btrfs module isn't
loaded, usually debug data is being written in kernel log. If initram, boot
params and fstab is not tampered by you or by not so successful upgrade
then check logs, use fdisk,testdisk,btrfsck to confirm than partition table
structure, partition id's and home partition is not damaged.
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Re: BTRFS and Nvidia broken on F23

[Michael Schwendt]

On Wed, 4 Nov 2015 00:28:16 +, Patrick O'Callaghan wrote:

> (Repeating myself from another thread where this was somewhat OT)
> 
> I updated to F23 using the approved dnf method, with no errors. Now I have
> an unusable system because /home is not being mounted. It's a btrfs
> filesystem and when trying to mount it manually I get:
> 
> mount: unknown filesystem type 'btrfs'
> 
> I have btrfs-progs. This worked correctly on F22. A dnf search shows a
> storaged-btrfs package which seems to be new (or at least not required in
> F22) but installing it and rebooting makes no difference.

What does "cat /proc/filesystems" say about btrfs?
If it's not listed there, does "modprobe btrfs ; mount /home" work then,
at least?
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BTRFS and Nvidia broken on F23

[Patrick O'Callaghan]

(Repeating myself from another thread where this was somewhat OT)

I updated to F23 using the approved dnf method, with no errors. Now I have
an unusable system because /home is not being mounted. It's a btrfs
filesystem and when trying to mount it manually I get:

mount: unknown filesystem type 'btrfs'

I have btrfs-progs. This worked correctly on F22. A dnf search shows a
storaged-btrfs package which seems to be new (or at least not required in
F22) but installing it and rebooting makes no difference.

Booting F22 mounts /home correctly, but I have no desktop as the upgrade
removed my working akmod Nvidia stuff and for some reason Nouveau doesn't
work.

*Not* a happy camper at this point.

poc
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Re: BTRFS and Nvidia broken on F23

[Tom Horsley]

On Wed, 4 Nov 2015 00:28:16 +
Patrick O'Callaghan wrote:

> Booting F22 mounts /home correctly, but I have no desktop as the upgrade
> removed my working akmod Nvidia stuff and for some reason Nouveau doesn't
> work.

This is the sort of thing that makes me always reinstall
from scratch in a virtual machine which I then copy
to a real partition :-).

Perhaps it didn't remove everything that akmod-nvidia does.
Did it leave the blacklist stuff on the kernel command line
that turns nvidia completely off? (I think it has 3 parameters
it adds, something like nouveau.modeset=0 rd.blacklist=nouveau
video=vesa:off).

Or perhaps, like me, you have a maxwell card which won't
work at all with nouveau - in that case you can get it
to boot with vesa video by using all the above kernel
parameters, but saying video=vesa:on (instead of off).

Then you can see what you are typing well enough to reinstall
the nvidia drivers for f22 from rpmfusion.
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Re: BTRFS and Nvidia broken on F23

[Alchemist]

2015-11-04 2:28 GMT+02:00 Patrick O'Callaghan :

> (Repeating myself from another thread where this was somewhat OT)
>
> I updated to F23 using the approved dnf method, with no errors. Now I have
> an unusable system because /home is not being mounted. It's a btrfs
> filesystem and when trying to mount it manually I get:
>
> mount: unknown filesystem type 'btrfs'
>
> I have btrfs-progs. This worked correctly on F22. A dnf search shows a
> storaged-btrfs package which seems to be new (or at least not required in
> F22) but installing it and rebooting makes no difference.
>
> Booting F22 mounts /home correctly, but I have no desktop as the upgrade
> removed my working akmod Nvidia stuff and for some reason Nouveau doesn't
> work.
>
> *Not* a happy camper at this point.
>


Boot F23, login console mode, check

systemctl --failed
systemctl status home.mount
rpm -qa | egrep "btrfs-progs|libblockdev"
lsmod | grep btrfs

and look carefully in
journalctl -p warning


>
> poc
>
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