On Tuesday, August 4, 2015 at 8:36:14 AM UTC-7, Mike Christie wrote:
>
> On 08/04/2015 10:33 AM, Mike Christie wrote: 
> > On 08/04/2015 09:45 AM, Roi Dayan wrote: 
> >> 
> >> 
> >> On Friday, July 24, 2015 at 3:38:00 AM UTC+3, The Lee-Man wrote: 
> >> 
> >>     On Wednesday, July 22, 2015 at 1:43:59 PM UTC-7, Mike Christie 
> wrote: 
> >> 
> >>         On 07/22/2015 10:24 AM, The Lee-Man wrote: 
> >>         > On Tuesday, July 21, 2015 at 9:29:19 PM UTC-7, Mike Christie 
> >>         wrote: 
> >>         > 
> >>         >     On 07/21/2015 05:47 PM, leeman...@gmail.com 
> <javascript:> 
> >>         wrote: 
> >>         >     > From: Lee Duncan <ldu...@suse.com <javascript:>> 
> >>         >     > 
> >>         >     > This patch allows iser transport to be used for the 
> >>         discovery 
> >>         >     > daemon. Otherwise, iscsid core dumps when attempting 
> this. 
> >>         >     > --- 
> >>         >     >  usr/discoveryd.c | 5 ----- 
> >>         >     >  1 file changed, 5 deletions(-) 
> >>         >     > 
> >>         >     > diff --git a/usr/discoveryd.c b/usr/discoveryd.c 
> >>         >     > index 1e149771a50b..2d3ccbcd722f 100644 
> >>         >     > --- a/usr/discoveryd.c 
> >>         >     > +++ b/usr/discoveryd.c 
> >>         >     > @@ -1034,11 +1034,6 @@ static void 
> >>         __do_st_disc_and_login(struct 
> >>         >     discovery_rec *drec) 
> >>         >     >          drec->u.sendtargets.reopen_max = 0; 
> >>         >     >   
> >>         >     >          iface_link_ifaces(&setup_ifaces); 
> >>         >     > -        /* 
> >>         >     > -         * disc code assumes this is not set and wants 
> >>         to use 
> >>         >     > -         * the userspace IO code. 
> >>         >     > -         */ 
> >>         >     > -        ipc = NULL; 
> >>         >     >   
> >>         >     >          rc = 
> >>         idbm_bind_ifaces_to_nodes(discovery_sendtargets, drec, 
> >>         >     >                                          &setup_ifaces, 
> >>         &rec_list); 
> >>         >     > 
> >>         > 
> >>         >     Do you need this patch for offload support too, and does 
> >>         it work ok now 
> >>         >     too, or was that already working? 
> >>         > 
> >>         > 
> >>         > That was already working. With this patch, offload via 
> IB/iSER 
> >>         seems 
> >>         > to be working for us. 
> >>         > 
> >> 
> >>         For offload, like bnx2i, was it doing discovery through the 
> offload 
> >>         engine or in software for you? I thought it would crash in 
> >>         iscsi_create_leading_conn when it references the ipc pointer 
> here: 
> >> 
> >>                 conn->socket_fd = ipc->ctldev_open(); 
> >> 
> >>         for bnx2i. 
> >> 
> >>         Your patch is correct. I am just trying to figure out why I 
> >>         wrote that 
> >>         "disc code assumes" comment above. It seems like my comment in 
> >>         the code 
> >>         is very very wrong, because if CAP_TEXT_NEGO, like with 
> >>         bnx2i/cxgb/be2iscsi and in newer kernels where we now set that 
> >>         bit iser, 
> >>         then we want a valid ipc pointer. 
> >> 
> >> 
> >>     I have never tried running the discovery daemon with bnx2i. Regular 
> >>     discovery 
> >>     through bnx2i works fine without this patch. 
> >> 
> >>     So I set it up just now and confirmed: using the discovery daemon 
> >>     for bnx2i 
> >>     also gets a core dump without this patch. And regular discovery is 
> >>     verified 
> >>     as working with or without this patch using bnx2i. 
> >> 
> >> 
> >> 
> >> Hi, 
> >> 
> >> any update about this patch ? 
> >> 
> > 
> > Needs more testing and review of the offload code it also enables. I am 
> > trying to get to it. 
> > 
>
> If offload discoveryd support has gone through a distro QA cycle, let me 
> know. It would be helpful. 
>

I did some more testing today. I created a target with discoveryd enabled.

First, I verified it was working normally by setting startup to automatic, 
logging out of the target, and letting the discovery daemon recreate the 
session for me. All was working normally.

Then I logged out of my session from the command line, and deleted the 
"node" record.

When the discovery daemon next ran for that target, it re-logged in, though 
it did not create the "node" entry in the database.

So it looks like it worked correct after a node deletion. 

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