nilfs_cleanerd not running

nilfs_cleanerd not running

[mikael-m2T68/X/qvZAfugRpC6u6w]

Hi,

It seems my NILFS is not garbage collected. The other day I was not able 
to boot up my NixOS due to a full disk. I booted on a USB stick and ran 
nilfs-clean which freed about 20 Gbytes. I suppose there should always 
be a process nilfs_cleanerd running on a system in order to clean up old 
check points. I have actually not read on the NILFS web site that 
nilfs_cleanerd should be running normally, but maybe I have missed this. 
Should it not be running normally?

When I am running nilfs-clean on my device, I get:

'No cleaner found on /dev/dm-0.'

mount | grep nilfs gives:

/dev/mapper/cryptroot on / type nilfs2 (rw,relatime)
/dev/mapper/cryptroot on /nix/store type nilfs2 (ro,relatime)

nilfs-clean -V gives:

nilfs-clean version 2.2.3

I am only able to run nilfs_cleanerd after setting LD_LIBRARY_PATH to 
/nix/store/*-nilfs-utils-2.2.3/lib

nilfs_cleanerd /dev/mapper/cryptroot
NILFS_CLEANERD_PID=24468

It seems however like the process terminates since there does not seem 
to exist any process when running 'ps aux | grep nilfs'

When trying 'sudo mount -t nilfs2 -o remount,pp=1 /dev/mapper/cryptroot 
/', I get:

/nix/store/y0ldq0j9qpax23d6g5iww7nz17xgx32q-nilfs-utils-2.2.3/sbin/nilfs_cleanerd: 
error while loading shared libraries: libnilfs.so.0: cannot open shared 
object file: No such file or directory
mount.nilfs2: Warning: cannot get pid of cleanerd
mount.nilfs2: cannot modify /etc/mtab.
Please remount the partition with -f option after making /etc/mtab 
writable.

I am running NixOS 16.03

'uname -r' gives:
4.4.14

Any ideas?

Thanks in advance.

Kind regards,

Mikael Andersson
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Re: nilfs_cleanerd not running

[mikael-m2T68/X/qvZAfugRpC6u6w]

Hi again,

I am now able to run nilfs_cleanerd after running it as root... :) When 
I am running it with sudo I get below, although I set LD_LIBRARY_PATH 
first:

nilfs_cleanerd: error while loading shared libraries: libnilfs.so.0: 
cannot open shared object file: No such file or directory

Maybe sudo starts a new shell and loses the LD_LIBRARY_PATH variable?

I think it is rather strange and confusing that nilfs_cleanerd says 
'NILFS_CLEANERD_PID=25215' without being able to start a process 
properly. Is that perhaps a bug?

My problem is still:

[root@nixos:/home/mikael]# nilfs_cleanerd /dev/mapper/cryptroot
nilfs_cleanerd: error while loading shared libraries: libnilfs.so.0: 
cannot open shared object file: No such file or directory

If I set LD_LIBRARY_PATH, I am however able to start nilfs_cleanerd as 
root.

Any ideas?

Kind regards,

Mikael Andersson

2016-08-30 22:01 skrev mikael-m2T68/X/qvZAfugRpC6u6w@public.gmane.org:
> Hi,
> 
> It seems my NILFS is not garbage collected. The other day I was not
> able to boot up my NixOS due to a full disk. I booted on a USB stick
> and ran nilfs-clean which freed about 20 Gbytes. I suppose there
> should always be a process nilfs_cleanerd running on a system in order
> to clean up old check points. I have actually not read on the NILFS
> web site that nilfs_cleanerd should be running normally, but maybe I
> have missed this. Should it not be running normally?
> 
> When I am running nilfs-clean on my device, I get:
> 
> 'No cleaner found on /dev/dm-0.'
> 
> mount | grep nilfs gives:
> 
> /dev/mapper/cryptroot on / type nilfs2 (rw,relatime)
> /dev/mapper/cryptroot on /nix/store type nilfs2 (ro,relatime)
> 
> nilfs-clean -V gives:
> 
> nilfs-clean version 2.2.3
> 
> I am only able to run nilfs_cleanerd after setting LD_LIBRARY_PATH to
> /nix/store/*-nilfs-utils-2.2.3/lib
> 
> nilfs_cleanerd /dev/mapper/cryptroot
> NILFS_CLEANERD_PID=24468
> 
> It seems however like the process terminates since there does not seem
> to exist any process when running 'ps aux | grep nilfs'
> 
> When trying 'sudo mount -t nilfs2 -o remount,pp=1
> /dev/mapper/cryptroot /', I get:
> 
> /nix/store/y0ldq0j9qpax23d6g5iww7nz17xgx32q-nilfs-utils-2.2.3/sbin/nilfs_cleanerd:
> error while loading shared libraries: libnilfs.so.0: cannot open
> shared object file: No such file or directory
> mount.nilfs2: Warning: cannot get pid of cleanerd
> mount.nilfs2: cannot modify /etc/mtab.
> Please remount the partition with -f option after making /etc/mtab 
> writable.
> 
> I am running NixOS 16.03
> 
> 'uname -r' gives:
> 4.4.14
> 
> Any ideas?
> 
> Thanks in advance.
> 
> Kind regards,
> 
> Mikael Andersson
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nilfs" 
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Re: nilfs_cleanerd not running

[Ryusuke Konishi]

On Wed, 31 Aug 2016 00:28:04 +0200, mikael-m2T68/X/qvZAfugRpC6u6w@public.gmane.org wrote:
> Hi again,
> 
> I am now able to run nilfs_cleanerd after running it as root... :)
> When I am running it with sudo I get below, although I set
> LD_LIBRARY_PATH first:
> 
> nilfs_cleanerd: error while loading shared libraries: libnilfs.so.0:
> cannot open shared object file: No such file or directory
> 
> Maybe sudo starts a new shell and loses the LD_LIBRARY_PATH variable?
> 
> I think it is rather strange and confusing that nilfs_cleanerd says
> 'NILFS_CLEANERD_PID=25215' without being able to start a process
> properly. Is that perhaps a bug?

Seems that libnilfs.so is loaded when its function is used first time.
nilfs_cleanerd first tries to deliver PID to the parent process and
then call a function of libnilfs.  So, this order looks to be natural.

> 
> My problem is still:
> 
> [root@nixos:/home/mikael]# nilfs_cleanerd /dev/mapper/cryptroot
> nilfs_cleanerd: error while loading shared libraries: libnilfs.so.0:
> cannot open shared object file: No such file or directory
> 
> If I set LD_LIBRARY_PATH, I am however able to start nilfs_cleanerd as
> root.
> 
> Any ideas?

Try ldd to investigate library dependency.

 $ ldd /sbin/nilfs_cleanerd

If libnilfs.so is "not found", add the library path
where libnilfs.so exists, to /etc/ld.so.conf or /etc/ld.so.conf.d/*.conf.
And, then run ldconfig.

Usually we don't have to care this kind of task.  It looks like there
is a problem in the NixOS distro package or your system environment.

Regards,
Ryusuke Konishi

> 
> Kind regards,
> 
> Mikael Andersson
> 
> 2016-08-30 22:01 skrev mikael-m2T68/X/qvZAfugRpC6u6w@public.gmane.org:
>> Hi,
>> It seems my NILFS is not garbage collected. The other day I was not
>> able to boot up my NixOS due to a full disk. I booted on a USB stick
>> and ran nilfs-clean which freed about 20 Gbytes. I suppose there
>> should always be a process nilfs_cleanerd running on a system in order
>> to clean up old check points. I have actually not read on the NILFS
>> web site that nilfs_cleanerd should be running normally, but maybe I
>> have missed this. Should it not be running normally?
>> When I am running nilfs-clean on my device, I get:
>> 'No cleaner found on /dev/dm-0.'
>> mount | grep nilfs gives:
>> /dev/mapper/cryptroot on / type nilfs2 (rw,relatime)
>> /dev/mapper/cryptroot on /nix/store type nilfs2 (ro,relatime)
>> nilfs-clean -V gives:
>> nilfs-clean version 2.2.3
>> I am only able to run nilfs_cleanerd after setting LD_LIBRARY_PATH to
>> /nix/store/*-nilfs-utils-2.2.3/lib
>> nilfs_cleanerd /dev/mapper/cryptroot
>> NILFS_CLEANERD_PID=24468
>> It seems however like the process terminates since there does not seem
>> to exist any process when running 'ps aux | grep nilfs'
>> When trying 'sudo mount -t nilfs2 -o remount,pp=1
>> /dev/mapper/cryptroot /', I get:
>> /nix/store/y0ldq0j9qpax23d6g5iww7nz17xgx32q-nilfs-utils-2.2.3/sbin/nilfs_cleanerd:
>> error while loading shared libraries: libnilfs.so.0: cannot open
>> shared object file: No such file or directory
>> mount.nilfs2: Warning: cannot get pid of cleanerd
>> mount.nilfs2: cannot modify /etc/mtab.
>> Please remount the partition with -f option after making /etc/mtab
>> writable.
>> I am running NixOS 16.03
>> 'uname -r' gives:
>> 4.4.14
>> Any ideas?
>> Thanks in advance.
>> Kind regards,
>> Mikael Andersson
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-nilfs"
>> in
>> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
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Re: nilfs_cleanerd not running

[Ryusuke Konishi]

Hi,
On Tue, 30 Aug 2016 22:01:09 +0200, mikael-m2T68/X/qvZAfugRpC6u6w@public.gmane.org wrote:
> Hi,
> 
> It seems my NILFS is not garbage collected. The other day I was not
> able to boot up my NixOS due to a full disk. I booted on a USB stick
> and ran nilfs-clean which freed about 20 Gbytes. I suppose there
> should always be a process nilfs_cleanerd running on a system in order
> to clean up old check points. I have actually not read on the NILFS
> web site that nilfs_cleanerd should be running normally, but maybe I
> have missed this. Should it not be running normally?
> 
> When I am running nilfs-clean on my device, I get:
> 
> 'No cleaner found on /dev/dm-0.'
> 
> mount | grep nilfs gives:
> 
> /dev/mapper/cryptroot on / type nilfs2 (rw,relatime)
> /dev/mapper/cryptroot on /nix/store type nilfs2 (ro,relatime)
> 
> nilfs-clean -V gives:
> 
> nilfs-clean version 2.2.3
> 
> I am only able to run nilfs_cleanerd after setting LD_LIBRARY_PATH to
> /nix/store/*-nilfs-utils-2.2.3/lib
> 
> nilfs_cleanerd /dev/mapper/cryptroot
> NILFS_CLEANERD_PID=24468
> 
> It seems however like the process terminates since there does not seem
> to exist any process when running 'ps aux | grep nilfs'
> 
> When trying 'sudo mount -t nilfs2 -o remount,pp=1
> /dev/mapper/cryptroot /', I get:
> 
> /nix/store/y0ldq0j9qpax23d6g5iww7nz17xgx32q-nilfs-utils-2.2.3/sbin/nilfs_cleanerd:
> error while loading shared libraries: libnilfs.so.0: cannot open

I don't know the detail of NixOS, but the reason why nilfs_cleanerd
aborted looks to be in this environmental issue.

> shared object file: No such file or directory
> mount.nilfs2: Warning: cannot get pid of cleanerd

This message indicates mount.nilfs2 failed to receive pid
from nilfs_cleanerd.  It looks like nilfs_cleanerd aborted before
handing over the pid completes.

> mount.nilfs2: cannot modify /etc/mtab.
> Please remount the partition with -f option after making /etc/mtab
> writable.

Is /etc/mtab a symlink to /proc/self/mounts ?

If so, this mount.nilfs2 (NixOS distro package ?) looks to be
wrongly built.

There are two version with regards to mount.nilfs2, one uses /etc/mtab
and another uses libmount.  The latter doesn't rewrite /etc/mtab.

The latter version of mount.nilfs2 can be built with "--with-libmount"
configure option from the nilfs-utils source package.

 $ ./configure --with-libmount
 $ make

Regards,
Ryusuke Konishi

> 
> I am running NixOS 16.03
> 
> 'uname -r' gives:
> 4.4.14
> 
> Any ideas?
> 
> Thanks in advance.
> 
> Kind regards,
> 
> Mikael Andersson
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nilfs"
> in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
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