More Netatalk Debugging and Solutions

Posted: August 24th, 2011 | Author: | Filed under: Mac, netatalk, Time Machine, Ubuntu | Tags: , , , , , , , | No Comments »

I had to reinstall my Ubuntu system because my Seagate drive died of a horrible and quick death. I replaced the drives with WD Greens. Since the Seagate had a SMART error, bad sectors were growing every second, basically the data on the OS drive was spinning to pieces.

When I reinstalled netatalk; I installed the self compiled netatalk package (that was mentioned previous). However I encounter the following error:

afpd {cnid_dbd.c:314} (E:CNID): dbd_rpc: Error reading header from fd (db_dir /var/dbd/AppleDB/tm): Connection reset by peer
afpd {cnid_dbd.c:400} (E:CNID): transmit: Request to dbd daemon (db_dir /var/dbd/AppleDB/tm) timed out.

That is relatively simple. I just had to make sure the dbpath in AppleVolumes.default exists.

Another error message I got:

afpd {volume.c:1907} (W:AFPDaemon): volume "usr" does not support Extended Attributes, using ea:ad instead

Solution:
I made sure cnidscheme is set to dbd and ea is set to sys in AppleVolume.default.

:DEFAULT: cnidscheme:dbd ea:sys

Reference:
Netatalk manual’s coverage on AppleTalk.default.


Ubuntu 10.10 Guest in VirtualBox Shared Folders Issues.

Posted: November 29th, 2010 | Author: | Filed under: Ubuntu, Virtual Box | Tags: , , , , , , , , , , , , | No Comments »

I have recently installed Ubuntu 10.10 as a VM to check out the Android SDK. After the basic install, I find the Shared Folder feature doesn’t work, even though I have installed the Guest Additions. I keep get the following error: /sbin/mount.vboxsf: mounting failed with the error: No such Device

I checked and under /sys/modules/ there is no vboxsf module, so obviously something in the VBoxLinuxAdditions-amd64.run script is not working.

After digging around I was told the simple way is to install the Guest Additions OSE version from apt-get. However since I am using the Closed Source edition (differences between versions can be found here). I thought there must be a better solution.

What happened is VBoxLinuxAdditions-amd64.run doesn’t do a sanity check for the existence of 3 components that Ubuntu needs to compile the modules, namely dkms, build-essential and linux-headers-generic. It requires a different set of packages for other Linux distributions. To solve the problem, run sudo apt-get install dkms build-essential linux-headers-generic. Then run VBoxLinuxAdditions-amd64.run, the modules will be compiled. Do a reboot to make sure the modules are loaded.

Once reboot, when you do lsmod | grep vbox. You should have something like this:

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vboxvideo               1956  2
drm                   206161  3 vboxvideo
vboxsf                 34612  0
vboxguest             176030  9 vboxsf

To mount the folder (example):

  1. Create the Shared Folder on the Guest Window toolbar. For me I created a Folder Name with the name vb.
  2. In Ubuntu create the directory /mnt/vb
  3. Then run sudo mount -t vboxsf vb /mnt/tmp

Remember the files will not have the user’s ownership, so it is a good idea to cp the files into another folder, then do a chown user * to correct the ownership. The files will belong to root and root ownership group.
For more information : This post on VirtualBox forum


Netatalk debugging and logging tips and tricks

Posted: November 26th, 2010 | Author: | Filed under: netatalk, Ubuntu | Tags: , , , , , , | No Comments »

Lately I have been having problems logging into my TimeMachine disc. My iMac works, but my macbook doesn’t, even though they run the exact same OS (10.6.5). I looked it up and here are the instructions to seperate the netatalk messages from the general message logs.

In /etc/netatalk/afpd.conf
add -setuplog “default log_info /var/log/afpd.log” to the long line of setup parameters.

If you run CNID server:
In /etc/default/netatalk
add CNID_CONFIG=”-l log_info -f /var/log/cnid.log”

You then run /etc/init.d/netatalk restart in your terminal.

Add the log files in Log File Viewer (under System -> Administration). Use File -> Open and select the log files in the appropriate place. Now whenever the logs are updated the log files will be in bold.

Now I get error messages when my macbook tries to log onto the Time Machine disc:
afpd[2081] {uams_dhx2_pam.c:350} (I:UAMSDaemon): DHX2 login: useruser
afpd[2081] {uams_dhx2_pam.c:228} (I:UAMSDaemon): PAM DHX2: PAM Success
afpd[2081] {uams_dhx2_pam.c:647} (I:UAMSDaemon): DHX2: PAM_Error: Authentication failure

However my iMac works fine:
afpd[2280] {uams_dhx2_pam.c:350} (I:UAMSDaemon): DHX2 login: useruser
afpd[2280] {uams_dhx2_pam.c:228} (I:UAMSDaemon): PAM DHX2: PAM Success
afpd[2280] {uams_dhx2_pam.c:684} (I:UAMSDaemon): DHX2: PAM Auth OK!


Netatalk fixes after Ubuntu 10.10 upgrade from Ubuntu 10.04

Posted: October 11th, 2010 | Author: | Filed under: netatalk, Ubuntu | Tags: , , , , | No Comments »

If you had followed the previous instructions and have just upgraded from 10.04 to 10.10 aka Maverick Meerkat; you might have noticed that Netatalk has ceased to function. Basically it won’t let you login and in the System Log Viewer you see error messages like below.

I got the following error messages in daemon.log.

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afpd[3523]: Setting uid/gid to 1000/1000
afpd[3523]: CNID DB initialized using Berkeley DB 4.8.30: (April  9, 2010)
afpd[3523]: cnid_open: dbenv->open (rw) of /storage/dirname/.AppleDB failed: DB_VERSION_MISMATCH: Database environment version mismatch
afpd[3523]: Fatal error: cannot open CNID or invalid CNID backend for /storage/dirname: cdb

What I come to realize that Netatalk 2.1.2 (that is now default in the Meerkat software repository), doesn’t support the cdb option in the cnidscheme. It only supports last, dbd and tdb.

Steps to uninstall Netatalk (if you had followed the previous instructions)
Remember to backup your copies of your conf files in your /etc/netatalk directory first.

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echo "netatalk purge" | sudo dpkg --set-selections
sudo apt-get remove netatalk
sudo apt-get autoremove

You can then follow the same instructions in the previous post and compile the latest version (2.1.2) with the proper authentication modules built in from the Maverick Meerkat repository.

Once you have started the dpkg installation of the new netatalk. You will be asked if you want the new conf files to be installed. I selected No and changed the cnidscheme manually.

Remember to change the cnidscheme setting from cdb to either dbd or tdb in your AppleVolumes.default files. For more information on selecting / changing please refer to here.