On Tue, 16 Dec 2008 14:00:46 +0100 Tomasz Chmielewski <mangoo@xxxxxxxx> wrote: > FUJITA Tomonori schrieb: > > > TMF (an initiator tries to abort a request due to timeout) might be > > related with your problem. I'll dig into it this weekend. > > Here is how you can reproduce it reliably. You need to have LVM on your target. > > On the initiator, do: > > dd if=/dev/iscsi/disk of=/dev/null > > > On the target, do: > > dmsetup suspend /dev/mapper/logical-volume > > This will block any I/O to userspace accessing that logical volume. > > > Wait until you see in logs: > > Dec 16 13:54:51 megathecus tgtd: abort_task_set(988) found 60000a07 0 > Dec 16 13:54:52 megathecus tgtd: conn_close(88) connection closed 0x807dc5c 4 > Dec 16 13:54:55 megathecus tgtd: conn_close(88) connection closed 0x807dc5c 3 > Dec 16 13:55:13 megathecus tgtd: conn_close(88) connection closed 0x807dc5c 2 > Dec 16 13:55:31 megathecus tgtd: conn_close(88) connection closed 0x807dc5c 1 > > > Then, make the volume accessible again: > > dmsetup resume /dev/mapper/megathecus-backup2 > > > Which will result in: > > Dec 16 13:55:32 megathecus kernel: tgtd[4872]: segfault at 00000220 eip 0804f0b5 esp 77c43ff0 error 4 Thanks a lot! This looks really helpful (probably I mess up ref counting). I'll try to reproduce and fix this bug shortly. Thanks, -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
