[Netatalk-devel] Debian Etch disk free space is zero if volsizelimit is set

[HAT <ha...@fa...>]

A NAS user upgraded to Debian 4.0 Etch and installed netatalk 2.2.1.
He cannot use Time Machine because disk free space is zero.

Hardware: I-O Data HDL2-G2.0   CPU:ARM
OS: Debian 4.0 Etch

Configure summary:
Install style:
debian
AFP:
Large file support (>2GB) for AFP3: yes
Extended Attributes: ad | sys
CNID:
backends: dbd last tdb
UAMS:
DHX ( SHADOW)
DHX2 ( SHADOW)
RANDNUM ( SHADOW)
passwd ( SHADOW)
guest
Options:
DDP (AppleTalk) support: no
SLP support: no
Zeroconf support: yes
tcp wrapper support: no
quota support: yes
admin group support: yes
valid shell check: yes
cracklib support: no
dropbox kludge: no
force volume uid/gid: no
ACL support: yes
LDAP support: no


>$ df -h
>Filesystem Size Used Avail Capacity Mounted on
>/dev/disk0s2 79Gi 52Gi 27Gi 67% /
>devfs 184Ki 184Ki 0Bi 100% /dev
>map -hosts 0Bi 0Bi 0Bi 100% /net
>map auto_home 0Bi 0Bi 0Bi 100% /home
>/dev/disk0s4 32Gi 19Gi 13Gi 60% /Volumes/BOOTCAMP
>afp_4scGN247DZqa3s7v0V0wSRDl-9.2e000007 98Gi 98Gi 0Bi 100% /Volumes/TimeMachine2

TimeMachine2's free spase is 0Bi !!!

/etc/afpd/volume.c:

>    if (vol->v_limitsize) {
>        if (getused(vol) != 0)
>            return AFPERR_MISC;
>        LOG(log_debug, logtype_afpd, "volparams: used on volume: %" PRIu64 " bytes",
>            getused_size);
>        vol->v_tm_used = getused_size;
>
>        *xbtotal = min(*xbtotal, (vol->v_limitsize * 1024 * 1024));
>        *xbfree = min(*xbfree, *xbtotal < getused_size ? 0 : *xbtotal - getused_size);
>    }
>
>    *bfree = min( *xbfree, maxsize);
>    *btotal = min( *xbtotal, maxsize);
>    return( AFP_OK );
>}

*xbfree is zero if "getused_size" is greater than *xbtotal, 
He checked a log file.

afpd.conf:
>- -setuplog "default log_debug /var/log/netatalk.log"

/var/log/netatalk.log
>Sep 23 19:54:11.316330 afpd[1718] {volume.c:1546} (D5:AFPDaemon): volparams: used on volume: 7213566707504637952 bytes

A value "7213566707504637952" is clearly unusual.

I conducted the reappearance experiment using 4.0 Etch, 5.0 Lenny
and 6.0 Squeeze on Parallels Desktop.

Debian 4.0 Etch:
Sep 26 21:26:44.396353 afpd[2120] {volume.c:1546} (D5:AFPDaemon): volparams: used on volume: 12136630814212 bytes

Debian 5.0 Lenny:
Sep 26 20:43:10.502427 afpd[17279] {volume.c:1546} (D5:AFPDaemon): volparams: used on volume: 217088 bytes

Debian 6.0 Squeeze:
Sep 26 21:44:33.616145 afpd[1817] {volume.c:1546} (D5:AFPDaemon): volparams: used on volume: 10598404 bytes

Only Etch is unusual.
Lenny and Squeeze are normal.

-- 
HAT