Pier4R

Pier4R thoughts
2013-11-20 08:01:12 (UTC)

Berlin.19112013

November 19th

Yesterday.
At first i wanted just to complete the raid array (raid6, 6 HDs of 3TB) to allow it to resync [i had no time left on Monday evening], but during the process i learned the problem about partition alignment with the new disk with 4Kb per sector (maybe that problem was noted by Fabio years ago, i don't know). So i fixed the partition, the array and then i allowed it to do the resync: 800 minutes needed. Oh and i had to switch from ext3 to ext4 as well.

In the meanwhile i learned another bit about raid/filesystems. Then i started other small works or task related to the server.
I was poor in planning the task. I'm not multitasking (and i believe that no one can do real multitasking), plus i'm not able to switch between tasks instantly. I need some time to "recall the plan". But anyway i didn't elaborate the plan, with the possible risks, at all. This remember me two things: planning is really useful, i learned it during my studies and now i'm forgetting it? No way. We (or at least i) are still too simple to elaborate a task for a nontrivial problem just in our mind in minutes. We need more time and careful planning, with the helps of time and external memory support we are able to solve several problems (infact we landed on the moon and we have mobile computers thanks to this).
Second: as i read in "letters to Lucilio" by Seneca "what we learn from experience, sometimes, can be learned ahead with reasoning". I (re)learned the importance of planning with the server storage experience, while i could do it by reasoning. Moreover is also true that when we do an error, this error is needed by us to fix our behavior, else we wouldn't have done that error.




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