tar "memory fault"

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2 total messages Started by khj Thu, 05 Feb 1987 18:52

#139

Author: khj
Date: Thu, 05 Feb 1987 18:52

29 lines
1375 bytes


	We are using the 2.9BSD-CSS/Harvard system on an 11/44.  When
"tar" is used to backup most file systems, there are no problems.
However, another (/dev/hk1c) causes the following message to be
displayed:


		   Memory fault - core dumped.


	I've repeatedly checked "hk1c" with "fsck" and it passes with
flying colors ... I've also tried different magtapes -- including a
brand-new one -- thinking that "tar" is failing on a tape error.

	My last hope -- other than the Net, of course -- is to add
another 512KB to the system on Monday.  This will raise our memory to an
even 1MB.  What troubles me is that I've successfully dumped the
referenced partition before (when, incidentally, it had many more used
blocks).

	Any ideas will be appreciated!



Kenneth H. Jacker
Dept of Math Sciences	   UUCP:      ...!{decvax,akgua}!mcnc!ecsvax!khj
Appalachian State Univ	   BITNET:    khj@ecsvax
Boone, NC  28608

Re: tar "memory fault"

#140

Author: casey
Date: Mon, 09 Feb 1987 07:18

13 lines
1331 bytes

In article <2648@ecsvax.UUCP> khj@ecsvax.UUCP (Kenneth H. Jacker) writes:
>	We are using the 2.9BSD-CSS/Harvard system on an 11/44.  When
>"tar" is used to backup most file systems, there are no problems.
>However, another (/dev/hk1c) causes the following message to be
>displayed: "Memory fault - core dumped."

  The problem occurs because tar recursivly traverses the file system tree.
On each recursion tar uses up some ungodly amount of stack.  I will be
working on the problem when I get to porting the 4.3 tar for 2.10BSD.  In
the mean time you'll either have to use dump, or do several tars at lower
points in the file system tree.  I think tar barfs at about seven levels ...

Casey.

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