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- Path: sparky!uunet!snorkelwacker.mit.edu!galois!runge!sangho
- From: sangho@runge.mit.edu (Sangho Yoon)
- Subject: Anyone know what a "writeback error" is?
- Message-ID: <1992Sep11.022648.28954@galois.mit.edu>
- Sender: news@galois.mit.edu
- Nntp-Posting-Host: runge
- Organization: MIT Department of Mathematics
- Date: Fri, 11 Sep 92 02:26:48 GMT
- Lines: 40
-
- I've been getting these errors every time I try to run dump onto an exabyte.
- The system is configured like this :
-
- 4/260 running SunOS 4.1.1
- 24MB memory
- Seagate 42100N SCSI drive
- Sun shoebox with 669MB SCSI drive and 2.3GB 8mm tape
- Maxtor 8760E ESDI drive on a Emulex MD21
- cgtwo color frame buffer
-
- The dumps proceed fine for a while but after it has dumped about 200 megs
- or so, the system crashes with the following error:
-
- Memory Error Register d4<INTR,INTENA,CE_ENA,WBACKERR>
- DVMA = 0, context = 0, virtual address = fff37ffc
- pme = 0, physical address = 1ffc
- panic: writeback error
- syncing Memory Error Register 1bd4<INTR,INTENA,CE_ENA,WBACKERR>
- DVMA = 1, context = d, virtual address = fff17fe0
- pme = e200033e, physical address = 67dfe0
- panic: writeback error
- 00240 low-memory static kernel pages
- 00170 additional static and sysmap kernel pages
- 00000 dynamic kernel data pages
- 00096 additional user structure pages
- 00000 segmap kernel pages
- 00000 segvn kernel pages
- 00002 current user process pages
- 00060 user stack pages
- 00568 total pages (568 chunks)
-
- dumping to vp ff177894, offset 120464
-
-
- The same error occurs whether I use a local 8mm tape or a remote 8mm tape.
- Does anyone have any clues as to what might be causing this problem?
-
- --
- Sangho Yoon - System Manager, MIT Mathematics Department
- Office : 2-373 Phone : 617-253-6770 Email : sangho@math.mit.edu
-