samba - Mar 2015 - Weird issue - STATUS_DISK_FULL

Hi All,

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?

testparm -s
Load smb config files from /etc/samba/smb.conf
Processing section "[BACKUP00]"
Loaded services file OK.
Server role: ROLE_STANDALONE
[global]
        map to guest = Bad User
        log file = /var/log/samba/log.%m
        max xmit = 65535
        deadtime = 15
        socket options = TCP_NODELAY IPTOS_LOWDELAY
        load printers = No
        printcap name = /dev/null
        disable spoolss = Yes
        idmap config * : backend = tdb
        use sendfile = Yes
        write cache size = 1048576
        printing = bsd
        print command = lpr -r -P'%p' %s
        lpq command = lpq -P'%p'
        lprm command = lprm -P'%p' %j

[BACKUP00]
        comment = BACKUPS
        path = /BACKUP00/Shared/
        read only = No
        guest only = Yes
        guest ok = Yes
        vfs objects = btrfs

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

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