I started FIO in client/server mode with two clients running 24 jobs each on individual LUNs. After a while, FIO fails with the following assertion, even though the jobs are still running on both the clients. # fio --client=client1 --remote-config=/root/all_powerpath.fio --client=client2 --remote-config=/root/all_multipaths.fio hostname=client1, be=0, 64-bit, os=Linux, arch=x86-64, fio=fio-2.6-13-g8a76, flags=1 hostname=client2, be=0, 64-bit, os=Linux, arch=x86-64, fio=fio-2.6-13-g8a76, flags=1 <client2> readwrite-mpatha-8k-para: (g=0): rw=randrw, <client1> readwrite-emcpowera-8k-para: (g=0): rw=randrw, bs=8K-8K/8K-8K/8K-8K, bs=8K-8K/8K-8K/8K-8K, ioengine=libaio, iodepth=8 ioengine=libaio, iodepth=8 <client2> readwrite-mpathb-8k-para: (g=0): rw=randrw, <client1> readwrite-emcpowerb-8k-para: (g=0): rw=randrw, bs=8K-8K/8K-8K/8K-8K, bs=8K-8K/8K-8K/8K-8K, ioengine=libaio, iodepth=8 ioengine=libaio, iodepth=8 <client2> readwrite-mpathc-8k-para: (g=0): rw=randrw, <client1> readwrite-emcpowerc-8k-para: (g=0): rw=randrw, bs=8K-8K/8K-8K/8K-8K, bs=8K-8K/8K-8K/8K-8K, ioengine=libaio, iodepth=8 ioengine=libaio, iodepth=8 <client2> readwrite-mpathd-8k-para: (g=0): rw=randrw, <client1> readwrite-emcpowerd-8k-para: (g=0): rw=randrw, bs=8K-8K/8K-8K/8K-8K, bs=8K-8K/8K-8K/8K-8K, ioengine=libaio, iodepth=8 ioengine=libaio, iodepth=8 <<< Omit other info >>> <client2> Starting 24 processes <client1> Starting 24 processes client <client1>: timeout on SEND_ETA/405.7M/0K /s] [51.2K/50.7K/0 iops] [eta 02d:23h:59m:49s] fio: client: unable to find matching tag (dbebe0)2M/0K /s] [60.8K/58.6K/0 iops] [eta 02d:23h:59m:54s] fio: client.c:1241: handle_eta: Assertion `client->eta_in_flight == eta' failed. Aborted # fio --version fio-2.6-13-g8a76 Also sometimes the job information gets mixed up from both the clients as above. Thanks for your support. -- Srinivasa R Chamarthy -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html