If you see the following error message when executing ‘zpool status’ after “upgrading” Proxmox to the (currently) latest version with ZoL 0.6.4 instead of 0.6.3:
zpool: Symbol `spa_feature_table' has different size in shared object, consider re-linking
“Re-linking” doesn’t have a special meaning in ZFS/ZoL terminology, it rather just describes the usual linking step after compiling some source code.
The most likely cause is that some new, updated and required packages have not been installed (e.g. with ‘uname -a’, you’ll see that the old kernel is still running, even after rebooting). Usually, this happens if one executes “apt-get update && apt-get upgrade” (as usual) rather than “apt-get update && apt-get dist-upgrade“. So, in order to solve this problem, do:
# apt-get update && apt-get dist-upgrade
In this case, ZoL 0.6.4 also includes a couple of new features which can be enabled for all local ZFS pools by executing:
# zpool upgrade -a
This system supports ZFS pool feature flags.
Enabled the following features on 'rpool':
All in all, after several months of using it, I can strongly recommend the B & W Zeppelin Air. It’s a truly great iPod/iPhone speaker, filling even larger rooms with quite impressive depths and crisp heights. And in contrast to its competitors (e.g. think of the lousy hardware of the otherwise innovative Sonos speakers – what a pity!), you can see, feel and hear its excellent build quality. It’s been engineered by the guys who equip the famous Abbey Road Studios, supply the audio system for Jaguars and invented extravagant speakers like the Nautilus, after all.
The only thing which wasn’t satisfying so far, is the Zeppelin Air’s buggy default (software) implementation of Airplay, i.e. that the Zeppelin Air lost the Wifi connection after a while in stand-by mode. As I finally found out, all that’s needed to fix this is a firmware upgrade to version 2.00.24 [updated 20120930]. At least, my Zeppelin Air hasn’t ever lost its Wifi connection anymore since. So, if you experience Wifi connectivity issues with your Zeppelin Air (likely), don’t hesitate and upgrade the Zeppelin’s firmware now, although it’s somewhat cumbersome (you need a suitable USB cable, e.g. from an external hard drive or printer, as this isn’t included in spite of the Zeppelin’s upmarket price). It’s well worth it!
Zeppelin Air firmware download at Bowers & Wilkins Support.