At Tue, 3 Nov 2009 11:48:43 -0700 (MST) CentOS mailing list <centos at centos.org> wrote: > > Hi, Corey, > > > m.roth at 5-cent.us wrote: > >> I'm in the process of rolling out the upgrade from (mostly) 5.3 to 5.4. > >> One of my servers started throwing the following: > >> Nov 1 05:22:51 <server> kernel: target4:0:0: FAST-80 WIDE SCSI 160.0 > >> MB/s DT (12.5 ns, offset 62) > >> Nov 1 05:22:51 <server> kernel: target4:0:1: FAST-80 WIDE SCSI 160.0 > >> MB/s DT (12.5 ns, offset 62) > >> > >> into my logs every half hour. I don't see anything resembling an error > >> message. The only thing I noted while googling was everyone else spoke > >> of "...ns, offset 127", but I have no clue if that's relevant to > >> anything. The smartd.conf is the default. I'm not running the debug > kernel. > >> > >> Does anyone have any idea why it's doing this, and, if it's not > >> important, how to get it to stop cluttering my logs? > >> > > What do you see when you run a smartctl -a $DEVICE on the drive that's > > choking? > > Wasn't sure if I should run it on /dev/sdx, or /dev/sdx[#]. I did both, on > all three drives, and no errors showing anywhere - the latter two (on > /dev/sdb and /dev/sdc) show no uncorrected errors, and no errors corrected > by ECC. /dev/sda gives me a lot more output, but says no errors logged. smartctl works on the 'bare drive': /dev/sdx. It makes no sense to run it on a partition (and smartctl seems to ignore the partition number). > > I don't really understand why sda gives so much more info, nor do I Different make/model/rev/firmware? smartctl's output depends on what the drive is able/willing to tell it in response to various requests. The more 'chatty' (so to speak) the drive, the more output smartctl displays. The -a option for SCSI disks is the same as '-H -i -A -l error -l selftest', this is 5 key bits of information: health (-H) info (-i), attributes (-A), and two flavors of error logs: error (-l error) and selftest (-l selftest). Not all drives have all of this info available. Eg, if the drive has no error log, '-l error' does not display much (if anything), if the drive has not done a selftest, then '-l selftest' won't display much. What the drive displays for its health, info, or attributes depends on what the firmware has coded for those features. > understand the o/p at the beginning. The headers for the second section > read: > SMART Attributes Data Structure revision number: 10 > Vendor Specific SMART Attributes with Thresholds: > ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED > WHEN_FAILED RAW_VALUE > > and there are numbers under RAW_VALUE, but are those the values of the > manufacturer's limits? Certainly, there is nothing but dashes under > WHEN_FAILED. > > Do you need more info? > > mark > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller at deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/