Re: loopback interface IP problem
Hi Mike thanks for your reply. My answers follow bellow right next to your questions. Tkx/Regards, PECastro So you do the ifconfig to lo after iscsi is setup and logged in right? Is the ip address different from what you originally logged into? I mean originally you did iscsiadm -m node -T some_tagret -p original_ip -l Initially I did iscsiadm -m discovery -t sendtargets -p 10.238.17.201 And I started the iscsi daemon, from there after it all just worked. then when you do the ifconfig it is a new_ip, but the iscsi tools think you want to still connect to original_ip so you get the connect failed errors and eventually the replacement/recovery timeout errors. But I do an ifconfig on the loopback interface adding a new IP on a virtual lo:0 I'm not messing with the original IP 10.238.17.201 which is still associated with eth0 What you would have to do is create a session to original_ip, then create a new session to new_ip, and if you do not want to see IO errors then you would use dm-multipath over both sessions and that would handle switching from the old path to the new path for you. Coul you explain me how I would be able to achieve that?! How do I create a session to the new IP? Perform a another discovery ? How can I use multipath between the two sessions?! Jan 28 19:00:34 vmbox kernel: connection1:0: iscsi: detected conn error (1011) Jan 28 19:00:34 vmbox iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3) Jan 28 19:00:37 vmbox iscsid: connect failed (111) Jan 28 19:01:08 vmbox last message repeated 8 times- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ 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: loopback interface IP problem
Hi Ulrich, My response follows bellow On Jan 29, 7:11 am, Ulrich Windl ulrich.wi...@rz.uni-regensburg.de wrote: On 28 Jan 2009 at 11:06, PECastro wrote: Hi there. I'm mounting a standard iscsi target. I've been doing a lot of interesting nice things, I can see the disk, I can play with it and everything is very wonderfull ! :) Long story short, the disk has been running fine as if it was really attached. The problem started when I had the need to configure a virtual IP on lo:0 . My client box IP is something like 10.238.17.221 and I was trying to configure a 10.238.17.220 IP on lo:0 with ifconfig lo:0 10.238.17.220 netmask 255.255.255.128 broadcast 10.238.17.255 up Hi! I'd suggest running netstat -rn, and I assume the kernel will route your net via lo now. I don't think I understand what you mean... This is my routing table whilst having iscsi working correctly and before I set up the virtual IP. Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.238.17.128 0.0.0.0 255.255.255.128 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 10.238.17.254 0.0.0.0 UG0 0 0 eth0 And this is after I create the virtual IP agains lo:0 [r...@vmbox1 ~]# ifconfig lo:0 10.238.17.220 netmask 255.255.255.128 broadcast 10.238.17.255 up [r...@vmbox1 ~]# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.238.17.128 0.0.0.0 255.255.255.128 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 10.238.17.254 0.0.0.0 UG0 0 0 eth0 Regards, Ulrich but the moment I do this I seem to lose connection to the disk whilst iscsi is throwing errors to the log. Jan 28 19:00:34 vmbox kernel: connection1:0: iscsi: detected conn error (1011) Jan 28 19:00:34 vmbox iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3) Jan 28 19:00:37 vmbox iscsid: connect failed (111) Jan 28 19:01:08 vmbox last message repeated 8 times Whilst trying to dd the disk I also got this Jan 28 19:02:34 vmbox last message repeated 6 times Jan 28 19:02:34 vmbox kernel: session1: iscsi: session recovery timed out after 120 secs Jan 28 19:02:34 vmbox kernel: iscsi: cmd 0x28 is not queued (8) Jan 28 19:02:34 vmbox kernel: sd 1:0:0:0: SCSI error: return code = 0x0001 Jan 28 19:02:34 vmbox kernel: end_request: I/O error, dev sdb, sector 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 1 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 2 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 3 Jan 28 19:02:34 vmbox kernel: iscsi: cmd 0x28 is not queued (8) Jan 28 19:02:34 vmbox kernel: sd 1:0:0:0: SCSI error: return code = 0x0001 Jan 28 19:02:34 vmbox kernel: end_request: I/O error, dev sdb, sector 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 0 Jan 28 19:02:37 vmbox iscsid: connect failed (111) Jan 28 19:03:11 vmbox last message repeated 9 times I hacked the init.d start file so that iscsid would start with the maximum verbosity of 8. The version I'm currently working with is from the RPM iscsi-initiator- utils-6.2.0.868-0.7.el5 bundled for CENTOS. Can any one reproduce this problem or even better can anyone explain why is this happening and if there's a way of getting away with this?!- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
loopback interface IP problem
Hi there. I'm mounting a standard iscsi target. I've been doing a lot of interesting nice things, I can see the disk, I can play with it and everything is very wonderfull ! :) Long story short, the disk has been running fine as if it was really attached. The problem started when I had the need to configure a virtual IP on lo:0 . My client box IP is something like 10.238.17.221 and I was trying to configure a 10.238.17.220 IP on lo:0 with ifconfig lo:0 10.238.17.220 netmask 255.255.255.128 broadcast 10.238.17.255 up but the moment I do this I seem to lose connection to the disk whilst iscsi is throwing errors to the log. Jan 28 19:00:34 vmbox kernel: connection1:0: iscsi: detected conn error (1011) Jan 28 19:00:34 vmbox iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3) Jan 28 19:00:37 vmbox iscsid: connect failed (111) Jan 28 19:01:08 vmbox last message repeated 8 times Whilst trying to dd the disk I also got this Jan 28 19:02:34 vmbox last message repeated 6 times Jan 28 19:02:34 vmbox kernel: session1: iscsi: session recovery timed out after 120 secs Jan 28 19:02:34 vmbox kernel: iscsi: cmd 0x28 is not queued (8) Jan 28 19:02:34 vmbox kernel: sd 1:0:0:0: SCSI error: return code = 0x0001 Jan 28 19:02:34 vmbox kernel: end_request: I/O error, dev sdb, sector 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 1 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 2 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 3 Jan 28 19:02:34 vmbox kernel: iscsi: cmd 0x28 is not queued (8) Jan 28 19:02:34 vmbox kernel: sd 1:0:0:0: SCSI error: return code = 0x0001 Jan 28 19:02:34 vmbox kernel: end_request: I/O error, dev sdb, sector 0 Jan 28 19:02:34 vmbox kernel: Buffer I/O error on device sdb, logical block 0 Jan 28 19:02:37 vmbox iscsid: connect failed (111) Jan 28 19:03:11 vmbox last message repeated 9 times I hacked the init.d start file so that iscsid would start with the maximum verbosity of 8. The version I'm currently working with is from the RPM iscsi-initiator- utils-6.2.0.868-0.7.el5 bundled for CENTOS. Can any one reproduce this problem or even better can anyone explain why is this happening and if there's a way of getting away with this?! --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
