576 reputation
1518
bio website jstarek.de
location Germany
age
visits member for 3 years, 2 months
seen Jun 10 at 12:12

Work

  • Member of the Scientific Computing group, DESY, Germany
  • Java, databases, unix-y stuff in a large-scale scientific computing facility

Hobby

  • Restoring Germany's oldest radio telescope, the Stockert 25 meter dish
  • Learning radio astronomy and high-frequency electronics
  • Design, construction and operation of the observatory's Linux network and scientific workstations

Jul
2
awarded  Curious
Jun
20
awarded  Popular Question
Jun
10
awarded  Caucus
Jun
8
asked Disabling screen blanking in GNOME 3
Jun
2
revised If I connect a physical device, how can I ever know which device file belongs to it?
Partially reverted / corrected previous edit (if you edit my answers, at least please do not insert spelling errors)
May
15
comment Will there be always a pair of same UID and GID?
"by default the UID and the GID are equal for ordinary users" -- actually, this statement is only true if you add "on some popular Linux distributions". Yes, Ubuntu et al. do it this way, but I would consider a common "users" group more of a default.
May
15
comment How can I stop dolphin from reading my entire home directory tree in order to make it usable on AFS?
I doubt that I can get our AFS admins to enable this flag for our huge cell just to let me check it out, but thanks for the pointer!
Apr
26
awarded  Popular Question
Mar
4
comment How to automatically start and shut down VirtualBox machines?
Two reasons: First, as stated in the original question, I did not want to alter the heavily modified guest OS if it wasn't really necessary. Secondly, and more importantly, this was intended to provide a clean way to automatically shut down all running VMs if the host was shut down.
Jan
30
accepted What does mdadm's “spare” number mean?
Oct
28
awarded  Good Question
Aug
30
answered What does mdadm's “spare” number mean?
Aug
29
revised What does mdadm's “spare” number mean?
monospaced the "df" command
Aug
29
comment What does mdadm's “spare” number mean?
I think the key information from the wiki page you linked to is this: "For raid5 there is an optimisation: mdadm takes one of the disks and marks it as 'spare'; it then creates the array in degraded mode." -- this would fit nicely with the observation made by derobert in the comments above. Apart from that, I'm afraid you misunderstood my question: I did not want to have 5 drives worth of space. Mentioning the 2 TB was just an observation.
Aug
29
comment What does mdadm's “spare” number mean?
@derobert, you are right: After the initial rebuild was finished, I got ARRAY /dev/md0 metadata=1.2 spares=1 name=[...] from mdadm --detail --scan and an equivalent info from /proc/mdstat.
Aug
29
asked What does mdadm's “spare” number mean?
Jun
5
comment How to automatically start and shut down VirtualBox machines?
Well, unfortunately "link rot" is a huge problem in those cases... I think, for posterity, the following two lines catch the basic idea behind your Link: It's creating a service that uses VBoxHeadless -s %i to start and VBoxManage controlvm %i savestate to stop the VM.
May
31
awarded  Yearling
Apr
15
awarded  Popular Question
Mar
12
awarded  Notable Question