[DRBD-user] What to do about read errors on the primary?

Lars Ellenberg lars.ellenberg at linbit.com
Tue Sep 18 13:16:11 CEST 2012

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

Alan Robertson <alanr at unix.sh> schrieb:

>I have read errors on the primary side, which caused the secondary to
>into an "inconsistent" state.  This means that the disk which
>desperately needs backing up, is no longer being backed up (!).
>In an ideal world, it seems to me what one would like for DRBD to do
>would be:
>    get the data from the secondary
>    write it to the primary - which often "fixes" read errors
>    continue on syncing everything else to the secondary

Well, we don't do this yet.
We detach the faulty disk, and resync when you reattach.

>How do I get it to do these things?  Or tell me why I don't really want
>this behavior?
>    Thanks!
>    -- Alan Robertson
>        alanr at unix.sh

Platform, kernel version, drbd version, configuration and logs...

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