Greetings Mike, Hannes and Co, During some recent testing using the Open/iSCSI Initiator v2.0-870.1, against the LIO-Target v3.0 tree, I noticed that while running the following script: while [ 1 ]; do iscsiadm -m node -T $TARGETNAME -p $PORTAL --login iscsiadm -m node -T $TARGETNAME -p $PORTAL --logout done for an extended period of time that I started getting OOM failures on the VMs running Open/iSCSI. Upon closer examination, this is what I found: <Open-iSCSI Node 1> Linux ubuntu 2.6.27.10 #2 SMP Tue Jan 6 18:33:00 PST 2009 i686 GNU/Linux Using open-iscsi-2.0-870.1: [78196.520214] scsi7981 : iSCSI Initiator over TCP/IP [78284.175307] scsi7982 : iSCSI Initiator over TCP/IP [78338.568656] scsi7983 : iSCSI Initiator over TCP/IP [78405.888822] scsi7984 : iSCSI Initiator over TCP/IP Output from slaptop: OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME 1037001 1036598 99% 0.03K 9177 113 36708K size-32 ------------------------------------------------------------------------- <Open-iSCSI Node 2> Linux opensuse 2.6.22.5-31-default #1 SMP 2007/09/21 22:29:00 UTC i686 i686 i386 GNU/Linux scsi7046 : iSCSI Initiator over TCP/IP scsi7047 : iSCSI Initiator over TCP/IP scsi7048 : iSCSI Initiator over TCP/IP scsi7049 : iSCSI Initiator over TCP/IP Output from slabtop: OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME 914057 913581 99% 0.03K 8089 113 32356K size-32 ------------------------------------------------------------------------- So it appears that memory is getting leaked in the size-32 range with each --login + --logout invocation. I also tried the same test with the shipping Open/iSCSI code in Debian v4 and OpenSuse 10.3 and these also suffer from the same issue. Also of interest is that running the following script for Discovery SendTargets *DOES NOT* reproduce the leak. while [ 1 ]; do iscsiadm -m discovery -t sendtargets -p $PORTAL done Please let me know if there is anything else I can do to help diagnose the issue. Many thanks for your most valuable of time, --nab -- 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
