[Netatalk-admins] Issue with Netatalk migration

[Bernard J. <ber...@gm...>]

Dear Netatalk users and sys admins,

I have a strange situation after Netatalk migration.

I decided to migrate 3TB files from Netatalk afpd 2.2.2 (Debian 5.0, fs :
ext3) to Debian 8.0 Netatalk 3.1.7 fs : xfs.

Afer rsync copy between servers, I updated CNID with "dbd -c" command.

My graphics team  with Mac systems and Adobe Indesing CC reports to me that
after combining (or put together) link and pictures, the destination folder
contain some files with zero files size.

With the old servers, it's working fine.

Just for your information I recieve a lot of errors input/output error  and
can't parse AppleDouble header :

---- netatalk.log ---
Nov 20 12:38:07.438157 afpd[3123] {ad_open.c:547} (warn:ad):
ad_valid_header_osx("/srv/pao/Serveur NAS/PAO/Arts Grafix/Evenements et
Sponsoring/Fêtes annuelles diverses/Noël-Nouvel An/Noël 2014/PDF et
JPG/PDF/._Charity_Logo_CO_beschnitt.ai"): not an adouble:osx file
Nov 20 12:38:07.438174 afpd[3123] {ad_open.c:547} (warn:ad):
ad_valid_header_osx("/srv/pao/Serveur NAS/PAO/Arts Grafix/Evenements et
Sponsoring/Fêtes annuelles diverses/Noël-Nouvel An/Noël 2014/PDF et
JPG/PDF/._Charity_Logo_CO_beschnitt.jpg"): not an adouble:osx file
Nov 20 12:38:07.472563 afpd[3123] {ad_open.c:678} (error:ad):
ad_header_read_osx: can't parse AppleDouble header
Nov 20 12:38:07.472587 afpd[3123] {ad_open.c:1488} (error:Default):
ad_header_read_osx(rfpath, ad, &st) failed: Input/output error
Nov 20 12:38:07.472604 afpd[3123] {fork.c:380} (error:AFPDaemon):
afp_openfork(432.4AA.011_WM2_1_f_S.2,12.jpg): ad_open: Input/output error
Nov 20 12:38:07.929851 afpd[3123] {ad_open.c:547} (warn:ad):
ad_valid_header_osx("/srv/pao/Serveur NAS/PAO/Arts
Grafix/Publicités/._restrictions pour annonce presse.doc"): not an
adouble:osx file
----

I saw this answers
http://sourceforge.net/p/netatalk/mailman/message/12311215/

My questions :
- Is it possible to delete all ._* files ?
- Why this issue happen with afpd proctocol : not an adouble:osx file issue
?
- Did afp_openfork function could have an impact to my zero files size ?

Thanks for your support and explanations.

Best regards,

BJA.