zook@sweetpea.jsc.nasa.gov (Craig A. Zook 283-4206) (05/16/91)
I have several Sun 4/280 running OS 4.1.1. I use an Exbyte 8mm tape drive that is local to the machine to make backups using dump. Sometimes the dump causes the system to crash and reboot. This happened again last night. The dump last night was 30 minutes into a 100 minute dump when the system crashed. Below is what was in the log: May 16 00:33:26 alamo vmunix: BAD TRAP May 16 00:33:26 alamo vmunix: pid 6552, `dump': Data fault May 16 00:33:26 alamo vmunix: kernel read fault at addr=0x0, pme=0x0 May 16 00:33:26 alamo vmunix: Bus Error Reg 80<INVALID> May 16 00:33:26 alamo vmunix: pc=0xf8006bf0, sp=0xf812cef8, psr=0x17c5, context= 0x4 May 16 00:33:26 alamo vmunix: g1-g7: f8006bf8, f8134dfc, 5f8, f8169cb8, 2fc, f81 57400, f8157400 May 16 00:33:26 alamo vmunix: Begin traceback... sp = f812cef8 May 16 00:33:26 alamo vmunix: Called from 0, fp=f812cfa0, args=a00 1000 0 f8164b e8 ff010110 1 May 16 00:33:26 alamo vmunix: Called from f80f1c58, fp=f8486bc0, args=a00 401ae1 4012e1 ff 0 e4 May 16 00:33:26 alamo vmunix: End traceback... May 16 00:33:26 alamo vmunix: panic: Data fault May 16 00:33:26 alamo vmunix: syncing file systems... [6] [5] [1] done May 16 00:33:26 alamo vmunix: 00288 low-memory static kernel pages May 16 00:33:26 alamo vmunix: 00346 additional static and sysmap kernel pages May 16 00:33:26 alamo vmunix: 00000 dynamic kernel data pages May 16 00:33:26 alamo vmunix: 00120 additional user structure pages May 16 00:33:26 alamo vmunix: 00000 segmap kernel pages May 16 00:33:26 alamo vmunix: 00000 segvn kernel pages May 16 00:33:26 alamo vmunix: 00119 current user process pages May 16 00:33:26 alamo vmunix: 00066 user stack pages May 16 00:33:26 alamo vmunix: 00939 total pages (939 chunks) May 16 00:33:26 alamo vmunix: May 16 00:33:26 alamo vmunix: dumping to vp ff18242c, offset 246378 May 16 00:33:26 alamo vmunix: SunOS Release 4.1.1 (ALAMO_TOPS) #1: Sat Feb 23 09 :27:16 CST 1991 Does anyone know how to fix this problem? -- Craig Zook - zook@sweetpea.jsc.nasa.gov Systems Engineeering and Administration McDonnell Douglas Space Systems Corp. - Engineering Services Division (713) 283-4206