[Bugme-new] [Bug 16490] New: "Assuming drive cache: write through" messages probably have wrong loglevel

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Sun Aug 1 11:13:56 PDT 2010


https://bugzilla.kernel.org/show_bug.cgi?id=16490

           Summary: "Assuming drive cache: write through" messages
                    probably have wrong loglevel
           Product: IO/Storage
           Version: 2.5
    Kernel Version: 2.6.34.1
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Serial ATA
        AssignedTo: jgarzik at pobox.com
        ReportedBy: prikrutil at gmail.com
        Regression: No


Every time I attach an usb stick, I see some messages like these written to the
errors.log:

Jul 22 17:22:42 myhost kernel: sd 4:0:0:0: [sdc] Assuming drive cache: write
through
Jul 22 17:22:42 myhost kernel: sd 4:0:0:0: [sdc] Assuming drive cache: write
through
Jul 22 17:22:42 myhost kernel: sd 4:0:0:0: [sdc] Assuming drive cache: write
through

According to the http://lists.us.dell.com/fom-serve/cache/110.html this isn't
actually an error, so these messages shouldn't be written to errors.log. But
they are.

It's very annoying to read errors.log flooded by those messages.

I didn't find any mistakes in default syslog-ng.conf (attached) in my system,
so maybe the loglevel for these messages is wrong.

Steps to reproduce:

1. Attach any USB flash. I use Transcend JetFlash V60
http://www.transcendusa.com/Products/ModDetail.asp?ModNo=126&SpNo=1&LangNo=0
2. Look at /var/log/errors.log

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