[DRBD-user] recovering from "Local IO failed. Detaching..."

Lars Ellenberg lars.ellenberg at linbit.com
Tue Sep 15 14:50:39 CEST 2009

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

On Tue, Sep 15, 2009 at 12:06:28PM +0200, Gianluca Cecchi wrote:
> I'm again here.
> After a little the bad diskless situation restarted also with 8.3.3rc2.
> What the first change or action to debug to try?
> In particular, I don't understand if the line in dmesg
> end_request: I/O error, dev cciss/c0d0, sector 0
> is reported by drbd or scsi layer or what...

generic block layer.

> In theory drbd should not try to read sector 0 at all as It uses c0d0p3 and
> c0d0p4.....

who says its DRBD that is reading there.
who says that has been a read request.

> or does this mean that it is not able to read the partition table....?


> Thanks for help
> Gianluca
> On the problematic node I have:
> drbd: initialized. Version: 8.3.3rc2 (api:88/proto:86-91)

please try current git, if you can.
there has been one regression in this area
somewhere between 8.3.2 and 8.3.3rc1,
which now is fixed again.

: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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