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forgot to say, the reason i ask u to check open-iscsi is that we tested open-iscsi + iet on same box before, it is not ok, then after a certain version, open-iscsi can run ok with iet on same box, but nobody do extensive tests. ming On Sun, 2006-03-26 at 12:37 -0500, Ming Zhang wrote: > frankly, i do not know. i assumed they should be ok no matter whether > they are on same box or not. but from experience, it was not. > > maybe some kernel guru here can answer this question. > > ming > > > > On Sun, 2006-03-26 at 09:18 -0800, Rik Herrin wrote: > > I'm running them on the same machine to see the > > maximum throughput and to see what type of bottleneck > > the disk subsystem will give me. I'm also waiting for > > a 4-port 1GbE Intel NIC to make sure that the network > > doesn't end up being the bottleneck. Do you think > > there's any reason for them running on the same > > machine to cause a problem? > > > > Rik > > > > --- Ming Zhang <mingz@xxxxxxxxxxx> wrote: > > > > > ps, any point to run them at same box? ;) > > > > > > ming > > > > > > On Sun, 2006-03-26 at 08:30 -0800, Rik Herrin wrote: > > > > I am going to try it with open-iscsi and > > > core-iscsi to > > > > see if this issue is initiator-specific or IET > > > > specific. In the meantime, I configured a 4-disk > > > RAID > > > > 0 SATA configuration and set it as the device > > > exported > > > > by IET. Without the iSCSI layer (without running > > > > either ietd or iscsi-linux), I saw write > > > throughput of > > > > about 212 MB/s. When I started IET and > > > linux-iscsi > > > > and ran the sequential write test, I am now > > > getting > > > > the following errors: > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 445 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 446 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 447 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 448 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 449 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 450 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 451 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 452 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 453 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 454 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 455 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 456 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 457 with return code > > > = > > > > 0x20000 > > > > Mar 26 18:37:28 localhost kernel: > > > iscsi-sfnet:host5: > > > > Failing command cdb 0x2a task 458 with return code > > > = > > > > 0x20000 > > > > ... [a lot more of the above] > > > > > > > > followed by: > > > > > > > > Mar 26 18:37:25 localhost kernel: > > > > execute_task_management(1177) 1e2 1 bd010000 > > > > Mar 26 18:37:25 localhost kernel: cmnd_abort(1114) > > > 1bd > > > > 1 0 42 131072 0 0 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > task mgmt itt 482 rejected (0x1) > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Sending ABORT TASK for task itt 446 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Waking tx_thread to send task mgmt function itt > > > 483 > > > > Mar 26 18:37:25 localhost kernel: > > > > execute_task_management(1177) 1e3 1 be010000 > > > > Mar 26 18:37:25 localhost kernel: cmnd_abort(1114) > > > 1be > > > > 1 0 42 131072 0 0 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > task mgmt itt 483 rejected (0x1) > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Sending ABORT TASK for task itt 447 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Waking tx_thread to send task mgmt function itt > > > 484 > > > > Mar 26 18:37:25 localhost kernel: > > > > execute_task_management(1177) 1e4 1 bf010000 > > > > Mar 26 18:37:25 localhost kernel: cmnd_abort(1114) > > > 1bf > > > > 1 0 42 131072 0 0 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > task mgmt itt 484 rejected (0x1) > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Sending ABORT TASK for task itt 448 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Waking tx_thread to send task mgmt function itt > > > 485 > > > > Mar 26 18:37:25 localhost kernel: > > > > execute_task_management(1177) 1e5 1 c0010000 > > > > Mar 26 18:37:25 localhost kernel: cmnd_abort(1114) > > > 1c0 > > > > 1 0 42 131072 0 0 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > task mgmt itt 485 rejected (0x1) > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Sending ABORT TASK for task itt 449 > > > > Mar 26 18:37:25 localhost kernel: > > > iscsi-sfnet:host5: > > > > Waking tx_thread to send task mgmt function itt > > > 486 > > > > Mar 26 18:37:25 localhost kernel: > > > > execute_task_management(1177) 1e6 1 c1010000 > > > > .. [some more errors] > > > > > > > > > > > > scsi5 (0:0): rejecting I/O to offline device > > > > scsi5 (0:0): rejecting I/O to offline device > > > > scsi5 (0:0): rejecting I/O to offline device > > > > scsi5 (0:0): rejecting I/O to offline device > > > > scsi5 (0:0): rejecting I/O to offline device > > > > > > > > real 6m1.986s > > > > user 0m0.006s > > > > sys 0m1.682s > > > > > > > > Rik > > > > > > > > > > > > --- Ming Zhang <mingz@xxxxxxxxxxx> wrote: > > > > > > > > > can u try open-iscsi? > > > > > > > > > > ming > > > > > > > > > > On Sun, 2006-03-26 at 05:12 -0800, Rik Herrin > > > wrote: > > > > > > Hi, > > > > > > I'm not sure if this is an iscsi-linux or > > > IET > > > > > issue, > > > > > > so I decided to post it on both mailing lists. > > > I > > > > > have > > > > > > the following environment: > > > > > > > > > > > > Environment: > > > > > > RHEL v4 U2 > > > > > > IET v 0.4.12-6 > > > > > > (iscsitarget-kernel-smp-0.4.12-6_2.6.9_22.EL > > > and > > > > > > iscsitarget-0.4.12-6) > > > > > > iscsi-initiator-utils-4.0.3.0-2 > > > > > > > > > > > > To get a quick idea of how much overhead > > > the > > > > > iSCSI > > > > > > initiator / target will add to my I/O, I > > > performed > > > > > === message truncated === > > > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? 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