Date: Mon, 5 Apr 1999 05:42:55 -0700 From: Don Lewis <Don.Lewis@tsc.tdk.com> To: Morgan Davis <mdavis@io.cts.com>, freebsd-stable@FreeBSD.ORG Subject: Re: tagged openings Message-ID: <199904051242.FAA08435@salsa.gv.tsc.tdk.com> In-Reply-To: Morgan Davis <mdavis@io.cts.com> "tagged openings" (Apr 5, 12:40am)
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This is nothing to worry about and these messages have been disabled in more recent versions of FreeBSD. However, my experience with Seagate drives suggests that your da0 disk probably has write caching enabled (Seagate ships them this way). If it had write caching disabled, the number of tagged openings would probably only drop down to 63. You might want to use camcontrol to disable write caching on this drive, especially if you use softupdates. With write caching disabled, you'll be less likely to get a corrupted filesystem in case of a power failure (or possibly a system reset), and softupdates will probably buy you a lot more performance than the write caching that the disk can do. On Apr 5, 12:40am, Morgan Davis wrote: } Subject: tagged openings } I found this in dmesg and am curious if this is cause for alarm(3). } } First, some startup probe info: } } da1 at ahc1 bus 0 target 3 lun 0 } da1: <SEAGATE ST15150W 0023> Fixed Direct Access SCSI-2 device } da1: 20.0MB/s transfers (10.0MHz, offset 8, 16bit), Tagged Queueing Enabled } da1: 4095MB (8388315 512 byte sectors: 255H 63S/T 522C) } changing root device to da0s1a } } Here's the extra info (errors?): } } (da0:ahc1:0:0:0): tagged openings now 64 } (da0:ahc1:0:0:0): tagged openings now 63 } (da0:ahc1:0:0:0): tagged openings now 62 } (da0:ahc1:0:0:0): tagged openings now 61 } (da0:ahc1:0:0:0): tagged openings now 60 } (da0:ahc1:0:0:0): tagged openings now 59 } (da0:ahc1:0:0:0): tagged openings now 58 } (da0:ahc1:0:0:0): tagged openings now 57 } (da0:ahc1:0:0:0): tagged openings now 56 } (da0:ahc1:0:0:0): tagged openings now 55 } (da0:ahc1:0:0:0): tagged openings now 54 } (da0:ahc1:0:0:0): tagged openings now 53 } (da0:ahc1:0:0:0): tagged openings now 52 } (da0:ahc1:0:0:0): tagged openings now 51 } (da0:ahc1:0:0:0): tagged openings now 50 } (da0:ahc1:0:0:0): tagged openings now 49 } (da1:ahc1:0:3:0): tagged openings now 64 } (da1:ahc1:0:3:0): tagged openings now 63 } } And this means? (4 days uptime) } } --Morgan } } } To Unsubscribe: send mail to majordomo@FreeBSD.org } with "unsubscribe freebsd-stable" in the body of the message }-- End of excerpt from Morgan Davis --- Truck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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