Re: 9.1 panic in ccb/iscsi

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

Chavdar Ivanov a écrit :
> On Sat, 12 Jun 2021 at 19:30, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
>>
>> On Sat, Jun 12, 2021 at 05:02:11PM +0100, Chavdar Ivanov wrote:
>>
>>> Not that this has any connection to your problem, but I'd nevertheless
>>> add my 5c about istgt - I have been serving zvols for perhaps one year
>>> now under -current without any problems.
>>
>> istgt is the iSCSI server.
>>
>> The crash is about the in-kernel iscsi initiator.
> 
> The first sentence in the first message in the thread says 'I can see
> some panics on a server that exports iSCSI volumes (istgt on
> a CCB device' (CCB later corrected as CCD), so as far as I understand
> it, istgt is the pkgsrc's net/istgt, the server.  It continues to
> explain that this server exports the volumes to some workstations.
> 
> While I have used net/istgt to export zvols, raw slices and gpt slices
> without problems, I have never tried to export a ccd volume, so I
> thought it might have been something specific to them.

	It was an error. This server acts as a iscsi target _and_ iscsi
initiator and I have misread ccb (I don't know why I have read ccd).

	In this case, I think that panic comes from initiator :

[   150,675914] iscsi: attached.  major = 203
[   150,755943] scsibus0 at iscsi0: 1 target, 16 luns per target
[   150,755943] sd0 at scsibus0 target 0 lun 0: <QNAP, iSCSI Storage,
4.0> disk fixed
[   150,785954] sd0: fabricating a geometry
[   150,785954] sd0: 10980 GB, 11244416 cyl, 64 head, 32 sec, 512
bytes/sect x 23028563968 sectors
[   150,805960] sd0: fabricating a geometry
[   150,835972] sd0: GPT GUID: a5d27c7c-8eda-40e8-a29b-e85a539a5bc7
[   150,835972] dk6 at sd0: "bacula", 23028563901 blocks at 34, type: ffs
[   150,845976] sd0: async, 8-bit transfers, tagged queueing