https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224496
--- Comment #44 from Sharad Ahlawat <free...@diyit.org> --- (In reply to Matthias Pfaller from comment #43) logs shows the read events are still timing out, even with 90 also there are no retry messages, is "sysctl kern.cam.da.retry_count" set to 0 ? you could try a few things to get to the root cause: a: also disable ZFS cache flush sysctl vfs.zfs.cache_flush_disable=1 even though your drives are not SMRs b: experiment with larger timeout values also observe "gstat" output and ensure the first column L(q) is continually returning to zero and not getting stuck for any of the drives c: try setting reducing the SCIC speed to 3.0 in the controller settings; just to eliminate some disk firmware speed compatibility issue. Side note, not sure if this applies to your drives but a few of mine don't support NCQ TRIM and are not properly driver blacklisted, so I had to set vfs.unmapped_buf_allowed=0 in loader.conf -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
