Hi all; We have a Solaris 10 U9 x86 instance running on Silicon Mechanics / SuperMicro hardware.
Occasionally under high load (ZFS scrub for example), the box becomes non-responsive (it continues to respond to ping but nothing else works -- not even the local console). Our only solution is to hard reset after which everything comes up normally. Logs are showing the following: Jan 8 09:44:08 prodsys-dmz-zfs2 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0): Jan 8 09:44:08 prodsys-dmz-zfs2 MPT SGL mem alloc failed Jan 8 09:44:08 prodsys-dmz-zfs2 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0): Jan 8 09:44:08 prodsys-dmz-zfs2 Unable to allocate dma memory for extra SGL. Jan 8 09:44:08 prodsys-dmz-zfs2 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0): Jan 8 09:44:08 prodsys-dmz-zfs2 Unable to allocate dma memory for extra SGL. Jan 8 09:44:10 prodsys-dmz-zfs2 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0): Jan 8 09:44:10 prodsys-dmz-zfs2 Unable to allocate dma memory for extra SGL. Jan 8 09:44:10 prodsys-dmz-zfs2 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0): Jan 8 09:44:10 prodsys-dmz-zfs2 MPT SGL mem alloc failed Jan 8 09:44:11 prodsys-dmz-zfs2 rpcmod: [ID 851375 kern.warning] WARNING: svc_cots_kdup no slots free I am able to resolve the last error by adjusting upwards the duplicate request cache sizes, but have been unable to find anything on the MPT SGL errors. Anyone have any thoughts on what this error might be? At this point, we are simply going to apply patches to this box (we do see an outstanding mpt patch): 147150 -- < 01 R-- 124 SunOS 5.10_x86: mpt_sas patch 147702 -- < 03 R-- 21 SunOS 5.10_x86: mpt patch But we have another identically configured box at the same patch level (admittedly with slightly less workload, though it also undergoes monthly zfs scrubs) which does not experience this issue. Ray _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
