Re: Error while backing up mulitpath devices using CDP
If you set the values to 0 you should not get the ping timeout error message. When you use that value do you see: Jun 23 12:21:24 mss-us2 kernel: connection8:0: ping timeout of 5 secs expired, last rx 7739207452, last ping 7739212452, now 7739217452 If you do then run iscsidm -m node -T your_tagret -p your_portal | grep noop and make sure those values are 0. Hi Mike, Thanks for your help. node.conn[0].timeo.noop_out_* value to 0 made the backup worked -Jeetendra --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
ping timeouts
Hi all, we do have a problem with NOP processing. Under heavy I/O, the connection starts spitting out 'ping timeout' error messages and resetting the connection. There has been _no_ error from the target side nor the connection, so it's us, sadly. However, after some heavy instrumenting I found this: [ 2664.456270] connection2:0: Sending nopout exp 1913193 max 1913177 queued 1913194 [ 2664.462592] connection2:0: mgmtpdu [itt xa05 p 8100795675c0] queued [ 2584.459166] connection2:0: mgmtpdu [op 0x0 hdr-itt 0xa05 datalen 0] [ 2584.466259] connection2:0: mgmtpdu [itt 0xa05 p 8100795675c0] done [ 2585.232044] connection2:0: mgmtpdu [op 0x2 hdr-itt 0xa06 datalen 0] [ 2585.235410] connection2:0: mgmtpdu [itt 0xa06 p 810079567540] done [ 2666.376858] connection2:0: mgmtpdu [itt 0xa05 p 8100795675c0] delayed, cmd 0 mgmt 0 req 0 exp 1913193 max 1913177 queued 1913194 [ 2667.169094] connection2:0: mgmtpdu [itt 0xa05 p 8100795675c0] delayed, cmd 0 mgmt 0 req 0 exp 1913193 max 1913177 queued 1913194 [ 2667.179683] connection2:0: Sending nopout,cmd 0 mgmt 0 req 0 exp 1913193 max 1913177 queued 1913194 [ 2669.092002] connection2:0: mgmtpdu [itt 0xa05 p 8100795675c0] delayed, cmd 0 mgmt 0 req 0 exp 1913193 max 1913177 queued 1913194 [ 2669.093935] connection2:0: ping timeout of 5 secs expired, stat 7880612636/308802796/2 state 1/-150303960 [ 2669.097568] connection2:0: iscsi: detected conn error (1011) [ 2669.201246] session2: blocking session [ 2669.206148] connection2:0: mgmtpdu [itt xa05 p 8100795675c0] finished (ignore the clock skew, it's a multicore TSC problem ...). The numbers are ExpCmdSN, MaxCmdSN, and queued CmdSN. So, as you can see, we're for some reason sending a NOP-Out with CmdSN 1913194, ExpCmdSN 1913193, and MaxCmdSN 191377. But reading through RFC 3720, I found this: The target MUST NOT transmit a MaxCmdSN that is less than ExpCmdSN-1. For non-immediate commands, the CmdSN field can take any value from ExpCmdSN to MaxCmdSN inclusive. The target MUST silently ignore any non-immediate command outside of this range or non- immediate duplicates within the range. The CmdSN carried by immediate commands may lie outside the ExpCmdSN to MaxCmdSN range. For example, if the initiator has previously sent a non-immediate command carrying the CmdSN equal to MaxCmdSN, the target window is closed. For group task management commands issued as immediate commands, CmdSN indicates the scope of the group action (e.g., on ABORT TASK SET indicates which commands are aborted). So no wonder we're never seeing any replies to that one. Question remains, though, why we're starting to send PDUs with invalid MaxCmdSN numbers ... Apologies as I'm running on an older codebase. But the same error / 'behaviour' is present in mainline as well. Cheers, Hannes -- Dr. Hannes Reinecke zSeries Storage h...@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Markus Rex, HRB 16746 (AG Nürnberg) --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
Re: How does readahead(2) affects a iscsi device
On Fri, Jul 03, 2009 at 04:10:19PM +0200, Maddin wrote: Hi folks, Sorry but not so firm in kernel hacking and structures, but if I've understood this correctly it should perform normally?! The problem is that I do a readahead (the tool) on a iscsi device with infortrend iscsi san as backend to warm up caches and my connection died, correctly the whole controller died and have to be reseted. Whoa! Have you filled a ticket with them? Has anyone an idea? Sounds like a big bug in their product. Cheers Maddin --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
Re: ping timeouts
On 07/20/2009 12:16 PM, Mike Christie wrote: hdr-cmd_sn = session-cmdsn++; so after we send a hdr with the cmdsn we incremented the session Not send. I meant to write prepd above. tracking one and so the tracking one is going to be one higher than what we are actually sending. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
undefined reference to `strlcpy' when building iscsid
Hi, I'm trying to build open-iscsi-2.0-871 on Gentoo (Kernel 2.6.30 with OpenSUSE Xen patches / GCC 4.3.3 / glibc 2.9). The kernel modules build fine but when trying to build iscsid I get the following errors: c -O2 -g -Wall -Wstrict-prototypes -I../include -I. -DLinux - DNETLINK_ISCSI=8 -D_GNU_SOURCE util.o io.o auth.o login.o log.o md5.o sha1.o iface.o idbm.o sysfs.o host.o session_info.o iscsi_sysfs.o netlink.o initiator.o scsi.o actor.o event_poll.o mgmt_ipc.o isns.o cxgb3i.o transport.o iscsid.o -o iscsid io.o: In function `get_netdev_from_hwaddress': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:189: undefined reference to `strlcpy' io.o: In function `bind_conn_to_iface': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:211: undefined reference to `strlcpy' /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:293: undefined reference to `strlcpy' auth.o: In function `acl_set_key_value': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:554: undefined reference to `strlcpy' auth.o: In function `acl_set_user_name': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:1895: undefined reference to `strlcpy' auth.o:/var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open- iscsi-2.0-871/usr/auth.c:1527: more undefined references to `strlcpy' follow snip - this goes on and on for each object file The full output of the build is available here: http://pastie.org/552382 Does anyone have any guidance on how to fix this? Thanks. -E --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
undefined reference to strl* when building iscsid
Hi, I'm trying to build open-iscsi-2.0-871 on Gentoo (Kernel 2.6.30 with OpenSUSE Xen patches / GCC 4.3.3 / glibc 2.9). The kernel modules build fine but when trying to build iscsid I get the following errors: cc -O2 -g -Wall -Wstrict-prototypes -I../include -I. -DLinux - DNETLINK_ISCSI=8 -D_GNU_SOURCE -c -o iscsid.o iscsid.c iscsid.c: In function 'main': iscsid.c:437: warning: ignoring return value of 'chdir', declared with attribute warn_unused_result iscsid.c:443: warning: ignoring return value of 'ftruncate', declared with attribute warn_unused_result iscsid.c:445: warning: ignoring return value of 'write', declared with attribute warn_unused_result cc -O2 -g -Wall -Wstrict-prototypes -I../include -I. -DLinux - DNETLINK_ISCSI=8 -D_GNU_SOURCE util.o io.o auth.o login.o log.o md5.o sha1.o iface.o idbm.o sysfs.o host.o session_info.o iscsi_sysfs.o netlink.o initiator.o scsi.o actor.o event_poll.o mgmt_ipc.o isns.o cxgb3i.o transport.o iscsid.o -o iscsid io.o: In function `get_netdev_from_hwaddress': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:189: undefined reference to `strlcpy' io.o: In function `bind_conn_to_iface': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:211: undefined reference to `strlcpy' /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/io.c:293: undefined reference to `strlcpy' auth.o: In function `acl_set_key_value': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:554: undefined reference to `strlcpy' auth.o: In function `acl_set_user_name': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:1895: undefined reference to `strlcpy' auth.o:/var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open- iscsi-2.0-871/usr/auth.c:1527: more undefined references to `strlcpy' follow auth.o: In function `acl_set_key': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:648: undefined reference to `strlcat' /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:650: undefined reference to `strlcat' auth.o: In function `acl_set_chap_alg_key': /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:750: undefined reference to `strlcpy' /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:753: undefined reference to `strlcat' /var/tmp/portage/sys-block/open-iscsi-2.0.871/work/open-iscsi-2.0-871/ usr/auth.c:755: undefined reference to `strlcat' snip - this goes on and on for each object file The full output of the build is available here: http://pastie.org/552382.txt Does anyone have any guidance on how to fix this? Thanks. -E P.S. Sorry if this posted twice, I sent a message through this morning that didn't show up on the group page. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~--~~~~--~~--~--~---
