samba - Mar 2015 - Weird issue - STATUS_DISK_FULL

Thanks David.

It's a brand new array but I've double checked and there's not much
space used and plenty free.


-----Original Message-----
From: David Disseldorp [mailto:ddiss at suse.de] 
Sent: 27 March 2015 16:11
To: Ciaran Scolard
Cc: 'samba at lists.samba.org'
Subject: Re: [Samba] Weird issue - STATUS_DISK_FULL

Hi Ciaran,

On Fri, 27 Mar 2015 15:35:12 +0000, Ciaran Scolard wrote:
> I've a share on a btrfs volume that is reporting that there isn't
enough disk space for a backup.
> Which is odd as the file is about 300GB in size and df  -h reports 5TB
free.
> Any ideas?
Free space tracking in Btrfs (and other CoW filesystems) is generally complex.
I'd suggest you take a look at the Btrfs documentation at:
https://btrfs.wiki.kernel.org/index.php/FAQ#Help.21_I_ran_out_of_disk_space.21

Cheers, David

On Fri, 27 Mar 2015 16:23:41 +0000, Ciaran Scolard wrote:
> Thanks David.
> 
> It's a brand new array but I've double checked and there's not
much space used and plenty free.
Which kernel version are you using. Which version of Samba are you
running? Can you reproduce the ENOSPC error doing a similar IO on the
local filesystem, or only via Samba?

Finally, have you tried running "btrfs fi balance ..." on the
filesystem?

Cheers, David

uname -a
Linux localhost.localdomain 3.19.1-1.el7.elrepo.x86_64 #1 SMP Sat Mar 7 13:55:36
EST 2015 x86_64 x86_64 x86_64 GNU/Linux

rpm -qa | grep -i samb
samba-4.1.1-38.el7_0.x86_64
samba-common-4.1.1-38.el7_0.x86_64
samba-libs-4.1.1-38.el7_0.x86_64

Local I/O appears to be unaffected.

btrfs balance start was run prior to the copy attempt.



-----Original Message-----
From: David Disseldorp [mailto:ddiss at suse.de] 
Sent: 27 March 2015 16:36
To: Ciaran Scolard
Cc: 'samba at lists.samba.org'
Subject: Re: [Samba] Weird issue - STATUS_DISK_FULL

On Fri, 27 Mar 2015 16:23:41 +0000, Ciaran Scolard wrote:
> Thanks David.
> 
> It's a brand new array but I've double checked and there's not
much space used and plenty free.
Which kernel version are you using. Which version of Samba are you running? Can
you reproduce the ENOSPC error doing a similar IO on the local filesystem, or
only via Samba?

Finally, have you tried running "btrfs fi balance ..." on the
filesystem?

Cheers, David