[DRBD-user] Antwort: corrupted data disk

Robert.Koeppl at knapp.com Robert.Koeppl at knapp.com
Fri Mar 16 08:51:03 CET 2012

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


IIRC all garbage you write to DRBD gets synchronised. Data getting 
corrupted at the hardware-Level (e.g. Defective Raid controller) only gets 
synced if you trigger a resync after you did a online verify and found out 
the data differs.
DRBD has no way of knowing what goes on on the hardware underneath unless 
it is notified by the Kernel via an IO error. Same goes for modifications 
of the data when drbd is not running (writing some garbage to the 
partition with drbd stopped - there was some discussion about exactly that 
scenario in the past).

Mit freundlichen Grüßen / Best Regards

Robert Köppl

Customer Support & Projects 
Teamleader IT Support

KNAPP Systemintegration GmbH
Waltenbachstraße 9
8700 Leoben, Austria 
Phone: +43 3842 805-322
Fax: +43 3842 82930-500
robert.koeppl at knapp.com 
www.KNAPP.com 

Commercial register number: FN 138870x
Commercial register court: Leoben

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Umarzuki Mochlis <umarzuki at gmail.com> 
Gesendet von: drbd-user-bounces at lists.linbit.com
16.03.2012 07:31

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drbd-user <drbd-user at lists.linbit.com>
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[DRBD-user] corrupted data disk






will a corrupted data/filesystem on primary will also get copied to
secondary (garbage in, garbage out?) on drbd 8.3?
if yes, how to prevent this?

-- 
Regards,

Umarzuki Mochlis
http://debmal.my
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