Bug 71111 – gentoo-dec-sources-2.6.9-r4 has SCSI regression with sym5x8xx driver

• Status: RESOLVED UPSTREAM
• Product: Gentoo Linux

[Description Dave Andruczyk 2004-11-13 18:27:29 UTC]

Happens with 2.6.9-gentoo-r1 and r4. 
Have a buslogic scsi card (Dual channel U160) with 4 drives in a mixed LVD/SE arrangement on SCSI0. (2 LVD 80 and 2 SE 40's)  

Under the 2.6.9 kernel I get these messages in /var/log/messagesNov 13 20:59:55 shrapnel sym0:3:0:phase change 6-7 11@2ec0cf84 resid=6.

The device was always sym0:3:0 (one of the SE 40 devices) the code varied though.  Happened with disk access ansd the system in general suffered badly performance wise. (switching VC's was slow and halted disk access during the VC switch.
 that drive contained /usr and /home so disk access was frequent as well.

The gentoo-dev-sources-2.6.8-r10 kernel has NONE of these problems, and runs well.




Reproducible: Always
Steps to Reproduce:
1.emerge gentoo-dev-sources-2.6.9-r4
2.use hardware that uses the sym538xx driver
3.notice bad scsi performance and logged messages (might need to run a mixed SE/LVD bus (which is allowed according to SCSI spec, all drives will run an ST speeds)

Actual Results:  
messages logged, scsi performance goes to hell 


Portage 2.0.51-r3 (default-x86-2004.2, gcc-3.3.4, glibc-2.3.4.20040808-r1, 
2.6.8 
-gentoo-r10 i686) 
================================================================= 
System uname: 2.6.8-gentoo-r10 i686 AMD Athlon(tm) MP 
Gentoo Base System version 1.4.16 
distcc 2.16 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) 
[enabled] 
Autoconf: sys-devel/autoconf-2.59-r5 
Automake: sys-devel/automake-1.8.5-r1 
Binutils: sys-devel/binutils-2.14.90.0.8-r1 
Headers:  sys-kernel/linux-headers-2.4.21-r1 
Libtools: sys-devel/libtool-1.5.2-r5 
ACCEPT_KEYWORDS="x86" 
AUTOCLEAN="yes" 
CFLAGS="-mcpu=athlon-mp -O2 -pipe" 
CHOST="i686-pc-linux-gnu" 
COMPILER="" 
CONFIG_PROTECT="/etc /usr/NX/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config  
/usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/shar 
e/config /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipd 
fm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ / 
usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/bind /var/qmail/c 
ontrol" 
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" 
CXXFLAGS="-mcpu=athlon-mp -O2 -pipe" 
DISTDIR="/usr/portage/distfiles" 
FEATURES="autoaddcvs candy ccache distcc distlocks sandbox" 
GENTOO_MIRRORS="ftp://mirrors.tds.net/gentoo http://mirror.datapipe.net/gentoo 
h 
ttp://mir.zyrianes.net/gentoo/" 
MAKEOPTS=" -j3 " 
PKGDIR="/usr/portage/packages" 
PORTAGE_TMPDIR="/var/tmp" 
PORTDIR="/usr/portage" 
PORTDIR_OVERLAY="/usr/local/portage" 
SYNC="rsync://rsync.gentoo.org/gentoo-portage" 
USE="X aalib acl alsa apm arts avi berkdb bitmap-fonts bonobo cdr crypt cups 
cur 
l dga dvb dvd encode esd f77 foomaticdb fortran freetype gdbm ggi gif gnome 
gpho 
to2 gpm gstreamer gtk gtk2 guile imlib jack java joystick jpeg kde libg++ 
libwww 
 mad mikmod mmx motif mozilla mpeg mysql nas ncurses nls oggvorbis openal 
opengl 
 oss pam pdflib perl png python qt quicktime readline ruby samba scanner sdl 
sla 
ng spell ssl svga tcltk tcpd tetex truetype usb videos wmf x86 xft xml2 xmms 
xv  
zlib"

[Comment 1 Daniel Drake (RETIRED) 2004-11-17 16:02:51 UTC]

Could you please test with plain 2.6.9 (development-sources) and/or 2.6.10-rc2 and see if the issue exists there?

[Comment 2 Dave Andruczyk 2004-11-17 17:29:47 UTC]

I haven't yet checked with 2.6.9 vanilla but the lkml list shows this is present in 2.6.9 by other users....

will try with 2.6.10-rc2 and get back to you

[Comment 3 Dave Andruczyk 2004-11-17 19:38:06 UTC]

it happens with 2.6.10-rc2 as well.  no improvement....

[Comment 4 Daniel Drake (RETIRED) 2004-11-30 08:58:35 UTC]

Ok, please file a bug for this upstream at http://bugzilla.kernel.org if nobody has done this already.