On Sat, Oct 29, 2016 at 03:53:25PM -0700, Nicholas A. Bellinger wrote: > Hi Johannes & Zhu, > > On Tue, 2016-10-18 at 23:29 -0700, Nicholas A. Bellinger wrote: > > On Tue, 2016-10-18 at 19:35 +0200, Johannes Thumshirn wrote: > > > On Tue, Oct 18, 2016 at 09:01:34AM +0200, Johannes Thumshirn wrote: > > > > > > [...] > > > > > > > > > > > > > This is likely the missing SCF_ACK_KREF assignment in >= v4.1.y: > > > > > > > > > > http://www.spinics.net/lists/target-devel/msg13530.html > > > > > > Sorry to disappoint you but it didn't fix my issue. Is there any debug data I > > > can give you, or do you have an advice where I could start looking? > > > > > > I have to admit I only tested the patch on our downstream kernel and not the > > > upstream kernel, I'll repeat the tests on 4.8 final tomorrow. > > > > > > > Is it possible to generate vmcore to have a look in crash + gdb..? > > > > > > Just curious if you've been able to verify the above patch for > v4.8.y iscsi-target ports on your specific config(s)..? > > To confirm, using v4.1.y + patch I've not run into any further > se_cmd->cmd_kref leaks and/or hung tasks with iscsi-target ports due to > high backend device I/O latency, resulting in host timeouts + ABORT_TASK > + session reinstatement to occur while waiting for outstanding se_cmd > backend I/O to complete. Hi Nic, I'm sorry I haven't come around to testing it but I do have my test VMs with me and I should have time tomorrow to do it. Sorry for not giving you any updates on this. Thanks (and sorry), Johannes -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
