Date: Thu, 22 Feb 2018 07:55:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 226110] Observing ASSERT at cfiscsi_session_delete+0x49 while running traffic on 100 iSCSI LUNs Message-ID: <bug-226110-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226110 Bug ID: 226110 Summary: Observing ASSERT at cfiscsi_session_delete+0x49 while running traffic on 100 iSCSI LUNs Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: manishk@chelsio.com CC: trasz@FreeBSD.org Created attachment 190884 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=190884&action=edit core text file Observing an assert while running traffic on 100 iSCSI LUNs (used zvols as LUNs) on the target machine. The panic stack trace: panic: destroying session with outstanding CTL pdus cpuid = 4 time = 1519157619 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2c/frame 0xfffffe005f30f880 kdb_backtrace() at kdb_backtrace+0x53/frame 0xfffffe005f30f950 vpanic() at vpanic+0x268/frame 0xfffffe005f30fa20 kassert_panic() at kassert_panic+0xc7/frame 0xfffffe005f30fab0 cfiscsi_session_delete() at cfiscsi_session_delete+0x49/frame 0xfffffe005f30fae0 cfiscsi_maintenance_thread() at cfiscsi_maintenance_thread+0x110/frame 0xfffffe005f30fb30 fork_exit() at fork_exit+0x145/frame 0xfffffe005f30fbb0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe005f30fbb0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic ------------------------------------- Steps to recreate the issue: ------------------------------------- The target machine exposes 100 zvols as iSCSI LUNs. The Initiator discovers these LUNS, creates file system on them, and runs traffic (iozone). The target machine asserts after few hours. OS: FreeBSD 12.0-CURRENT (svn r329019) I'm using GENERIC config file, with "nooptions VIMAGE" ==>Start the Target (FreeBSD) 1. Create 100 zvols # zpool create iscsi <slice/partition> # for ((i=0;i<100;i++)); do zfs create -V1G -o volmode=dev iscsi/d$i; done 2. configure the network interface to be used (Target_IP_Address) 3. /etc/ctl.conf file: portal-group pg0 { discovery-auth-group no-authentication listen <Target_IP_Address> } target iqn.2016-11.com.xyz.abc:0 { auth-group no-authentication portal-group pg0 lun 0 { path /dev/zvol/iscsi/d0 size 1G option vendor "foo" option product "bar" option revision "d0" } } . . 100 targets with 1 lun each 4. start the target daemon # service ctld onestart ==>Initiator (Linux) 1. login/discover the target # iscsiadm -m discovery -t st -p <Target_IP_Address> -l 2. List all Luns # lsscsi 3. Format and create file system ONLY on all discovered luns (TAKE CARE TO NOT TOUCH OTHER LUNS). # mkfs.ext3 /dev/sdxx // for all discovered LUNs 4. mount all the devices formatted in the above step to different mount points # mount /dev/sdxx /mnt/iscsiyy // for all the luns formatted in the above step 5. Run traffic on all luns using iozone # cd /mnt/iscsiyy # iozone -a -I -+d -g 512m & ==> Target machine asserts after 6-7 hours. -- You are receiving this mail because: You are the assignee for the bug.
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