On the next day, I eventually realised that an hard disk was logically missing on the system and the ZFS mirror it was belonging to was working in a degraded mode. This disk holding a swap partition, the panic quite makes sense: some data was stored there and could not be paged-out anymore.

# zpool list
NAME   SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
data   294G  68,2G   226G    23%  1.25x  DEGRADED  -
tank  1,81T   300G  1,52T    16%  1.06x  ONLINE  -

# zpool status data
  pool: data
 state: DEGRADED
status: One or more devices could not be opened.  Sufficient replicas exist for
        the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
   see: http://www.sun.com/msg/ZFS-8000-2Q
  scan: none requested
config:

NAME                                            STATE     READ WRITE CKSUM
data                                            DEGRADED     0     0     0
  mirror-0                                      DEGRADED     0     0     0
    gptid/36711e52-a69e-11de-8adf-0018f38af467  ONLINE       0     0     0
    15152536002702365387                        UNAVAIL      0     0     0  was /dev/gptid/602da1ae-c474-11de-960d-0008a14dbca1

errors: No known data errors

Location of Feature Keys on the ST2030.

I finally decided to configure these keys with proper numbers instead of browsing my directory each time I want to make a call. But the phone only ships with a single paper sheet to hand-write the names corresponding to the configured numbers and my hand-writing is somewhat like what would produce a drunk cow with Creutzfeldt–Jakob disease. I browsed the Internet for a sheet template to fill-in, print and cut, but was unable to find some.

The first line of the script was:

#!/bin/bash -x

Those who know me might imagine how my eyes were bleeding (the other may want to read my previous entry about writing portable shebang for shell scripts), but this shows another problem one may encounter when porting a shell script with an invalid shebang.

While the targeted audience is definitively not the *BSD kernel hacker, and despite the fact that each issue (so far) is spotted on a BSD flavor; the diversity of the articles featured in the magazine will make any Free Software enthusiast find useful information.