>Submitter-Id: current-users
>Originator: Daniel Ortmann
>Organization: N/A
>Confidential: no
>Synopsis: consistent "make -k buildworld" crash with 2 swap partitions
>Severity: critical
>Priority: high
>Category: kern
>Release: FreeBSD 4.0-CURRENT i386
>Class: sw-bug
>Environment:
The /etc/fstab which enables the crash is the following. To fix it
comment out the second swap. Note they are on separate drives.
# Device Mountpoint FStype Options Dump Pass#
/dev/wd1s1b none swap sw 0 0
/dev/wd2s1b none swap sw 0 0
/dev/wd2s1a / ufs rw 1 1
/dev/wd2s1d /home ufs rw 2 2
/dev/wd1s1e /rootbak ufs ro 2 2
/dev/wd0s2a /rootboot ufs ro 2 2
/dev/wd1s1f /tmp ufs rw 2 2
/dev/wd2s1f /usr ufs rw 2 2
/dev/wd1s1h /usr/X11R6 ufs rw 2 2
/dev/wd1s1a /usr/local ufs rw 2 2
/dev/wd2s1g /usr/obj ufs rw 2 2
/dev/wd2s1h /usr/ports ufs rw 2 2
/dev/wd1s1d /usr/ports/distfiles ufs rw 2 2
/dev/wd1s1g /usr/src ufs rw 2 2
/dev/wd2s1e /var ufs rw 2 2
proc /proc procfs rw 0 0
kern /kern kernfs rw 0 0
My hardware is quite standard. The kernel config file almost matches
GENERIC. Here are the options in case you find information here:
options INET #InterNETworking
options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options MFS #Memory Filesystem
options MD_ROOT #MD is a potential root device
options NFS #Network Filesystem
options MSDOSFS #MSDOS Filesystem
options CD9660 #ISO 9660 Filesystem
options CD9660_ROOT #CD-ROM usable as root, CD9660 required
options PROCFS #Process filesystem
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options P1003_1B #Posix P1003_1B real-time extentions
options _KPOSIX_PRIORITY_SCHEDULING
options ICMP_BANDLIM #Rate limit bad replies
options AUTO_EOI_1
options AUTO_EOI_2
options COMPAT_LINUX
options CLK_CALIBRATION_LOOP
options CLK_USE_I8254_CALIBRATION
options CLK_USE_TSC_CALIBRATION
options ICMP_BANDLIM
options IPDIVERT
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPFIREWALL_VERBOSE_LIMIT=3
options KERNFS
options MD5
options NO_F00F_HACK
options PPP_DEFLATE
options PPP_FILTER
options SC_DISABLE_REBOOT
options SOFTUPDATES
options ATA_STATIC_ID #Static device numbering
I should also mention that I am running softupdates.
>Description:
If both swap partitions are enabled then "make -k buildworld" crashes
the system with ABSOLUTE CONSISTENCY.
Since this behavior has been around for about a year (???) I assume my
system configuration must be unusual ... or surely this would have been
discovered and fixed earlier.
Several months ago a bug was found with dual swap partitions. It
involved some cross-partition alignment problem. When that bug was
fixed most of my crashes disappeared. Except for this problem.
But "make -k buildworld" continued to crash the system.
>How-To-Repeat:
1) Edit fstab to use 2 separate swap partitions on 2 separate drives.
2) Run with softupdates.
3) Run "make -k buildworld"
Note 1: I don't know if the second partition *must* be on a different
drive to cause the crash, only that my system is set up that
way.
Note 2: I don't know if softupdates has anything to do with this
problem.
>Fix:
The workaround is to comment out the second swap partition in fstab.
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