Date: Fri, 13 Oct 2000 18:10:16 +0100 From: dbhague@allstor-sw.co.uk To: freebsd-scsi@FreeBSD.org, freebsd-fs@FreeBSD.org Cc: gibbs@scsiguy.com, mjacob@feral.com, Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, smcintyre@allstor-sw.co.uk Subject: Re: Stressed SCSI subsystem locks up the system Message-ID: <80256977.005E53A0.00@mail.plasmon.co.uk>
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[-- Attachment #1 --]
We have rebuilt the SCSI RAID partition with the disklabel -B flag and have just
had the following error:
dscheck(#da/3): negative b_blkno -132104
dev=#da/3, bno=-66052, bsize=8192 size =8192 fs=/RAID
panic: ffs_blkfree: bad size
syncing disk
This was a new partition generated by the enclosed script, setupraidb, running
the test mentioned in my earlier mail.
Any ideas ?
Regards Dave
(See attached file: setupraidb)
[-- Attachment #2 --]
#!/bin/sh
#
# /sbin/setupraid - simple script to init the RAID on an Intelliraid
# v $Id: setupraid,v 1.11 2000/10/05 11:16:47 dsw Exp $
# (c) 2000 Allstor Software
#
# If we're not passed a disk name, we'll assume that da0 is what we
# want.
# Default init values for the working variables
DISK=da0
MOUNT=/RAID
VERBOSE=0
FORCE=0
# Include the standard error numbers
#. /lib/errno.sh
# Standard list of errno codes to be included in shell scripts that
# may need them.
#
# Steve McIntyre
#
# Values taken from /usr/include/errno.h on FreeBSD 3.0 using the
# following script:
#
# cat /usr/include/errno.h | grep '^#define.*/' | awk '
# {
# gsub ("\\*/",# "")
# printf("%s=%-10.20s \t# %s %s %s %s %s %s %s %s\n", $2, $3, $5,
# $6, $7, $8, $9, $10, $11, $12)
# }' | tr -d '()'
#
# These are not all POSIX, but should be a superset of it.
EPERM=1 # Operation not permitted
ENOENT=2 # No such file or directory
ESRCH=3 # No such process
EINTR=4 # Interrupted system call
EIO=5 # Input/output error
ENXIO=6 # Device not configured
E2BIG=7 # Argument list too long
ENOEXEC=8 # Exec format error
EBADF=9 # Bad file descriptor
ECHILD=10 # No child processes
EDEADLK=11 # Resource deadlock avoided
ENOMEM=12 # Cannot allocate memory
EACCES=13 # Permission denied
EFAULT=14 # Bad address
ENOTBLK=15 # Block device required
EBUSY=16 # Device busy
EEXIST=17 # File exists
EXDEV=18 # Cross-device link
ENODEV=19 # Operation not supported by device
ENOTDIR=20 # Not a directory
EISDIR=21 # Is a directory
EINVAL=22 # Invalid argument
ENFILE=23 # Too many open files in system
EMFILE=24 # Too many open files
ENOTTY=25 # Inappropriate ioctl for device
ETXTBSY=26 # Text file busy
EFBIG=27 # File too large
ENOSPC=28 # No space left on device
ESPIPE=29 # Illegal seek
EROFS=30 # Read-only file system
EMLINK=31 # Too many links
EPIPE=32 # Broken pipe
EDOM=33 # Numerical argument out of domain
ERANGE=34 # Result too large
EAGAIN=35 # Resource temporarily unavailable
EWOULDBLOCK=$EAGAIN # Operation would block
EINPROGRESS=36 # Operation now in progress
EALREADY=37 # Operation already in progress
ENOTSOCK=38 # Socket operation on non-socket
EDESTADDRREQ=39 # Destination address required
EMSGSIZE=40 # Message too long
EPROTOTYPE=41 # Protocol wrong type for socket
ENOPROTOOPT=42 # Protocol not available
EPROTONOSUPPORT=43 # Protocol not supported
ESOCKTNOSUPPORT=44 # Socket type not supported
EOPNOTSUPP=45 # Operation not supported
EPFNOSUPPORT=46 # Protocol family not supported
EAFNOSUPPORT=47 # Address family not supported by protocol family
EADDRINUSE=48 # Address already in use
EADDRNOTAVAIL=49 # Can't assign requested address
ENETDOWN=50 # Network is down
ENETUNREACH=51 # Network is unreachable
ENETRESET=52 # Network dropped connection on reset
ECONNABORTED=53 # Software caused connection abort
ECONNRESET=54 # Connection reset by peer
ENOBUFS=55 # No buffer space available
EISCONN=56 # Socket is already connected
ENOTCONN=57 # Socket is not connected
ESHUTDOWN=58 # Can't send after socket shutdown
ETOOMANYREFS=59 # Too many references: can't splice
ETIMEDOUT=60 # Operation timed out
ECONNREFUSED=61 # Connection refused
ELOOP=62 # Too many levels of symbolic links
ENAMETOOLONG=63 # File name too long
EHOSTDOWN=64 # Host is down
EHOSTUNREACH=65 # No route to host
ENOTEMPTY=66 # Directory not empty
EPROCLIM=67 # Too many processes
EUSERS=68 # Too many users
EDQUOT=69 # Disc quota exceeded
ESTALE=70 # Stale NFS file handle
EREMOTE=71 # Too many levels of remote in path
EBADRPC=72 # RPC struct is bad
ERPCMISMATCH=73 # RPC version wrong
EPROGUNAVAIL=74 # RPC prog. not avail
EPROGMISMATCH=75 # Program version wrong
EPROCUNAVAIL=76 # Bad procedure for program
ENOLCK=77 # No locks available
ENOSYS=78 # Function not implemented
EFTYPE=79 # Inappropriate file type or format
EAUTH=80 # Authentication error
ENEEDAUTH=81 # Need authenticator
EIDRM=82 # Identifier removed
ENOMSG=83 # No message of desired type
ELAST=83 # Must be equal largest errno
ERESTART=-1 # restart syscall
EJUSTRETURN=-2 # don't modify regs, just return
ENOIOCTL=-3 # ioctl not handled by this layer
# Include the standard "vecho" functions
#. /lib/vecho.sh
vecho () {
if [ $VERBOSE -gt 0 ] ; then
echo "$@"
fi
}
vvecho () {
if [ $VERBOSE -gt 1 ] ; then
echo "$@"
fi
}
vvvecho () {
if [ $VERBOSE -gt 2 ] ; then
echo "$@"
fi
}
vvvvecho () {
if [ $VERBOSE -gt 3 ] ; then
echo "$@"
fi
}
usage() {
echo
echo "$0 [ -d device ] [-n name] [-v] "
echo
echo "Creates a simple raid setup on the specified device."
echo "If no device is specified, da0 is assumed."
echo "Options:"
echo " -d device Specifies the device on which the filesystems should be"
echo " made. Default is da0."
echo " -n name Specifies the mount point / share name of the"
echo " user partition to be created. Default is /RAID"
echo " -v Be more verbose. Currently three levels are available:"
echo " silent (default), verbose and ultra-verbose"
echo " -f Set up new raid partitions even if some already exist"
echo " and are in use - this will attemtp to unmount them first"
echo
exit $EINVAL
}
# Parse options
if [ $# -gt 0 ] ; then
while [ $# -gt 0 ]
do
case "$1"x in
"-v"x)
VERBOSE=$(($VERBOSE + 1))
shift
;;
"-n"x)
shift
MOUNT="$1"
shift
;;
"-d"x)
shift
DISK="$1"
shift
;;
"-f"x)
shift
FORCE=1
;;
*)
echo "\"$1\": invalid option."
usage
;;
esac
done
fi
vecho Using disk \"$DISK\"
vecho Creating user partition \"$MOUNT\"
vvecho Checking inputs are valid...
# Check options here!
if [ ! -e /dev/r$DISK ] ; then
echo Error. /dev/r$DISK not found - is this disk supported?
exit $ENODEV
fi
vecho /dev/r$DISK seems OK, continuing
if [ -z "$MOUNT" ] ; then
echo Error. No mount point specified!
usage
fi
# The name must start with a leading /
LEAD=`echo "$MOUNT" | cut -c1`
if [ $LEAD != "/" ] ; then
echo Error. Invalid mount point \"$MOUNT\". No leading /
usage
fi
vecho $MOUNT seems OK, continuing
# Simple sanity check - do we have anything mounted on this disk at
# the moment?
MOUNTS=`mount | grep $DISK`
if [ "$MOUNTS"x != ""x ] ; then
echo
echo "You appear to already have the following filesystem(s) mounted on $DISK"
mount | grep $DISK
if [ "$FORCE"x = "0"x ] ; then
echo "Rectify this please!"
echo "Aborting"
exit $EBUSY
else
echo "-f specified; Attempting to unmount them"
# To make sure we don't screw up, unmount them in reverse
# order - will fix any mount dependencies
for PART in `mount | grep $DISK | sort -rk3 | awk '{print $1}'`
do
vecho Unmounting partition $PART
umount $PART
error=$?
if [ $error -ne 0 ] ; then
echo Unmount $PART failed, trying to force the unmount
umount -f $PART
error=$?
if [ $error -ne 0 ] ; then
echo Forced unmount of $PART failed, giving up!
exit $EBUSY
fi
fi
done
fi
fi
# Read the current disklabel - make sure the device exists
disklabel -B -r -w $DISK auto
error=$?
if [ $error -ne 0 ] ; then
echo "Error $error trying to read current disklabel"
echo "Are you sure that \"$DISK\" is present and correct?"
exit $ENOENT
fi
# OK, device is present and we can read from it
# Simple partition setup required for now:
# Partition Size
# a 100MB
# c full disk
# d full disk - 100MB
#
# a is the "system" partition, used for backup of vital files
# c is the normal BSD "whole disk" partition
# d is the partition the user should be able to use
#
# The following code is stolen heinously from the Netready setup
# script (pdl)
# Calculate the physical layout of this disk
vecho Calculating sizes for disk $DISK
# bytes per sector, probably 512
bps=`disklabel $DISK | grep "^bytes\/sector" | cut -f2 -d' '`
vvecho bytes/sector: $bps
# sectors per cylinder
spc=`disklabel $DISK | grep "^sectors\/cylinder" | cut -f2 -d' '`
vvecho sectors/cylinder: $spc
# num cylinders
cyl=`disklabel $DISK | grep "^cylinders:" | cut -f2 -d' '`
vvecho cylinders: $cyl
# total sectors
spu=`disklabel $DISK | grep "^sectors\/unit" | cut -f2 -d' '`
vvecho sectors: $spu
# man dc(1) for details, but basically
# Command Stack after command
# push 4 4
# pop & set precision (null)
# push 1048576 1048576
# push Sectors per Cylinder $spc,1048576
# push bytes per cylinder $bpc,$spc,1048576
# pop two, multiply, push result $bpc*$spc,1048576
# pop two, divide, push result ($bpc*$spc)/1048576
# print top of stack ($bpc*$spc)/1048576
#MB per cylinder
mpc=`echo "4k 1048576 $spc $bps * /p" | dc`
vvecho cylinders/MB: $mpc
# More dc magic: .5+0k1/p rounds to nearest whole cylinder. We don't
# have a round-to-nearest-integer operator in dc, so we add .5 and
# round down to the integer value, which obviously has the same
# effect.
# 4k = Set precicion to 4 decimal places
# 100 $mpc * = Multiply 100 by number of MB per cylinder
# .5+ = add .5 to the current top of stack
# 0k = Set precision to 0 decimal places
# 1/ = Divide top of stack by 1. See note.
# $spc * = Multiply (rounded) number of cylinders by Sectors per Cylinder
# p = print result
#
# Note :
# In (at least this implementation of) dc the precicsion is only
# applied to a value on a divide, not on a multiply, print, add, etc.
# This is the easiest trivial operation to cause the rounding to take
# effect.
#
# The whole partition map is stored as a vast load of shell variables:
# p[a-h] = Partition size for partition [a-h] in sectors
# o[a-h] = Offset for partition [a-h] in sectors
# fs[a-h] = Filesystem name for partition [a-h] 4.2BSD for everything but swap
#
# offset is a running total of sectors used, and is used for the next
# partition's offset
# 100MB for /system
pa=`echo "4k 100 $mpc *.5+0k1/ $spc *p" | dc`
oa=0
offset=$pa
fsa=4.2BSD
# No swap (pb)
# Full disk (pc) dealt with later
# And now for the user partition
pd=`expr $spu - $offset`
od=$offset
fsd=4.2BSD
vvecho New disklabel entries for $DISK:
vvecho " a: $pa $oa $fsa 0 0 0" ;
vvecho " c: $spu 0 unused 0 0" ;
vvecho " d: $pd $od $fsd 0 0 0" ;
# Calculate them in MB for the user.
SIZE_A=`echo "0k $pa 2048 / p" | dc`
SIZE_D=`echo "0k $pd 2048 / p" | dc`
vecho New partition setup:
vecho "System use: $SIZE_A MB"
vecho "User use: $SIZE_D MB"
# Ready to write.
# Now make sure we start with a blank disk
dd if=/dev/zero of=/dev/r$DISK count=2048 >/dev/null 2>&1
# Cause the system to generate a label
disklabel -B -r -w $DISK auto
# Now add our stuff to it
(disklabel $DISK | tail -r | tail +2 | tail -r ;\
echo " a: $pa $oa $fsa 0 0 0" ; \
echo " c: $spu 0 unused 0 0" ; \
echo " d: $pd $od $fsd 0 0 0" ; ) | disklabel -rR $DISK /dev/stdin
# Time to make filesystems!
vecho Newfs "$DISK"a
if [ $VERBOSE -gt 1 ] ; then
newfs /dev/r"$DISK"a
else
newfs /dev/r"$DISK"a >/dev/null
fi
error=$?
if [ $error -ne 0 ] ; then
echo Error in creating filesystem on "$DISK"a
exit $error
fi
vecho Newfs "$DISK"d
if [ $VERBOSE -gt 1 ] ; then
newfs /dev/r"$DISK"d
else
newfs /dev/r"$DISK"d >/dev/null
fi
error=$?
if [ $error -ne 0 ] ; then
echo Error in creating filesystem on "$DISK"d
exit $error
fi
if [ ! -d /system ] ; then
mkdir /system
fi
vecho Mounting /system
mount -r /dev/"$DISK"a /system
if [ ! -d "$MOUNT" ] ; then
mkdir "$MOUNT"
fi
vecho Mounting $MOUNT
mount /dev/"$DISK"d "$MOUNT"
# Make the mount world r/w'able
chmod 777 "$MOUNT"
exit 0
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