Date: Thu, 19 Nov 2020 20:33:28 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229745] ahcich: CAM status: Command timeout Message-ID: <bug-229745-227-VNabSdUCRQ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-229745-227@https.bugs.freebsd.org/bugzilla/> References: <bug-229745-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229745 --- Comment #56 from Wayne Willcox <wwillcox7@gmail.com> --- Ok so it looks like I solved this for my system. I did it by reducing the command tags. The default was 255 and I started by just cutting that in half. I kept divi= ding by 2 until I got to 25. At 50 I only had the time outs every few days. At= 25 I have not had an error in over a week. I could possibly increase from 25 = but I won't bother. Performance seems to be fine and the errors are stopped. You can do this with the camcontrol tags command camcontrol tags [dev_id][generic args] [-N tags] [-q] [-v] Here are the steps. camcontrol devlist <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 8 lun 0 (pass0,da0) <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 9 lun 0 (pass1,da1) <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 10 lun 0 (pass2,da2) <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 11 lun 0 (pass3,da3) <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 12 lun 0 (pass4,da4) <IBM-XIV ST2000NM0001 A2 BC42> at scbus0 target 13 lun 0 (pass5,da5) camcontrol tags da5=20=20=20 (pass5:mps0:0:13:0): device openings: 25 Originally mine was at 255. This can be done on a live system and doesn't require closing the disk and reopening it to take effect. I just changed a= ll 15 hdisks. --=20 You are receiving this mail because: You are the assignee for the bug.=
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