Date: Tue, 26 Sep 2006 09:00:45 -0700 (PDT) From: mjacob@freebsd.org To: scsi@freebsd.org Subject: hysteresis for CAM_RESRC_UNAVAIL Message-ID: <20060926085839.Q98053@ns1.feral.com>
next in thread | raw e-mail | index | archive | help
This showed up on one of the lists- we just retrt BUSY and CAM_RESRC_UNAVAIL right away. Below is a patch where I added a half second delay between retries. Does this seem okay and/or should it be longer delays as the timeout count goes down? Should BUSY be included? Index: cam_periph.c =================================================================== RCS file: /home/ncvs/src/sys/cam/cam_periph.c,v retrieving revision 1.62 diff -u -r1.62 cam_periph.c --- cam_periph.c 24 May 2006 15:22:21 -0000 1.62 +++ cam_periph.c 26 Sep 2006 15:54:52 -0000 @@ -1699,6 +1699,12 @@ } break; case CAM_RESRC_UNAVAIL: + /* + * Wait a half second for the resource shortage to abate. + */ + relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT; + timeout = 500; + /* FALLTHROUGH */ case CAM_BUSY: /* timeout??? */ default:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060926085839.Q98053>