We have the same identical problem, but only on one guest of two
identical zlinux (SLES8, same application, same number of DASD, same
z/VM and LPAR, same installation date/procedure...).
Did anyone have a solution better than Suse response?!
I don't understand why it never happen before on fifty linux running
from 2 yeas...

--
Gian

Ranga Nathan wrote:

I got a quick response from SuSE.

Here is what they say:
You shouldn't see any file corruption at all. Does this happen on an
MDISK on z/VM, by any chance? In this case please turn off MDISK
caching. Another common cause for seemingly unexplainable corruptions
is if you assign more than 2 GB of RAM to a 31-bit mode Linux system the
kernel I/O behaves erratically.

If I turn MDC  off, I need to bump up Linux memory as it would need to do
some caching. I like my Linux machines run lean.

Are there similar issues with other file systems? Is there a performance
hit in turning MDC off?
__________________________________________


[cut]

Subject
Re: reiserfs file system corruption

Some of our partitions using reiserfs are showing a large amount of file
corruptions ... like below. I could not fix it using --fix-fixable or even
--rebuild-tree. I even copied the data using cp-ax and copied back. Same
result. I had to re-format the partition and copy back the data. Is this
the only way to fix reiserfs partitions? I am not sure why the
--fix-fixable and --rebuild-tree dont work.

bad_stat_data: The objectid (1946160282) is marked free, but used by an
object [1946160279 1946160282 0x0 SD (0)]
bad_stat_data: The objectid (1946160283) is marked free, but used by an
object [1946160279 1946160283 0x0 SD (0)]
bad_stat_data: The objectid (1946160284) is marked free, but used by an
object [1946160279 1946160284 0x0 SD (0)] finished
Comparing bitmaps..finished
Checking Semantic tree:
finished
4312 found corruptions can be fixed when running with --fix-fixable
###########
reiserfsck finished at Mon Jun 13 16:54:48 2005
###########
__________________________________________



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