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crash dump server for red hat ent 4


 
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Operating Systems Linux crash dump server for red hat ent 4
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Old 11-19-2008
crash dump server for red hat ent 4

Is it true that you can't have the crash dump server/client on the same server?

I know I've installed Nagios open source before, I though it's only for that kind of thing. I never though that Red hat ent 4 would be like client/server on the crash dump.

if someone is having problem with high file descriptor and your kernel logs doesn't have much or no error at all, the only way the red hat support could analyze your problem is through crash dump and above is the only way. or if you are having problem with your applications and your kernel couldn't tell.


any comments will be highly appreciated?
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crashutil(1M)															     crashutil(1M)

NAME
crashutil - manipulate crash dump data SYNOPSIS
version] source [destination] DESCRIPTION
copies and preserves crash dump data, and performs format conversions on it. Common uses of include: o Copying portions of a dump that still reside on a raw dump device into a crash dump directory. o Converting between different formats of crash dumps. o Copying crash dumps from one directory, or medium, to another. will write to its destination the crash dump it reads from its source. The crash dump format used to write the destination is specified with if is not specified, the destination will have the same format as the source. If no destination is specified, source is used; the format conversion will be done in place in the source, without copying. When completes successfully, the entire contents of the crash dump will exist at destination; any portions that had still been on raw dump devices will have been copied to destination. There are three known dump formats: (Version 0) This format, used up through HP-UX 10.01, consists of a single file containing the physical memory image, with a 1-to-1 cor- respondence between file offset and memory address. Normally there is an associated file containing the kernel image. sources or destinations of this type must be specified as two pathnames to plain files, separated by whitespace; the first is the core image file and the second is the kernel image file. (Version 1) This format, used in HP-UX 10.10, 10.20, and 10.30, consists of a directory containing an file, the kernel file, and numerous files, which contain portions of the physical memory image. sources or destinations of this type should be specified as the pathname to a core directory. (Version 2) This format, used in HP-UX 11.00 and later, consists of a directory containing an file, the kernel and all dynamically loaded kernel module files, and numerous files, each of which contain portions of the physical memory image and metadata describing which memory pages were dumped and which were not. sources or destinations of this type should be specified as the pathname to a crash directory. (Version 3) This format is used in HP-UX Release 11i Version 1.0 and later. It is very similar in structure to the format in that it consists of a directory containing an file, the kernel and all dynamically loaded kernel module files, and numerous files, each of which contain portions of the physical memory image and metadata describing which memory pages were dumped and which were not. In addition to the primary file, there are auxiliary index files, that contain metadata describing the image files containing the memory pages. This format will be used when the dump is compressed. See crashconf(1M). Other formats, for example tape archival formats, may be added in the future. When the source and destination are different types of files -- for example, when source is a directory and destination is a pair of plain files -- both must be specified. Options (Quiet) Disables the printing of progress messages. Warning and error messages are still printed. Specifies the version of the destination format. Allowed values are 0, 1, 2 or 3. Also allowed is the keyword which specifies that the destination format should be the same as the current source format. is the default if is not specified. If the destination format is then the source format should also be Conversion to from older formats is not supported. RETURN VALUE
Upon exit, returns the following values: 0 The operation was successful. 1 The operation failed, and an appropriate error message was printed. EXAMPLES
An HP-UX 11.00 crash dump was saved by savecrash(1M) to The flag was specified to savecrash, specifying that only those portions of the dump which were endangered by swap activity should be saved; the rest are still resident in the raw dump devices. To save the remainder of the dump into the crash dump directory, use: If preferred, the completed crash dump directory could be in a different location -- perhaps on another machine via NFS: To debug this crash dump using tools which do not understand the most current crash dump format, convert it to the older core directory format: or the even older "core file and kernel" format: AUTHOR
was developed by HP. SEE ALSO
savecrash(1M), crashconf(1M). crashutil(1M)

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