Hallo Ken'ichi! From: "Ken'ichi Ohmichi" <oomichi@xxxxxxxxxxxxxxxxx> Subject: makedumpfile-1.3.4: Support kdump-compressed format for input file. Date: Fri, 09 Oct 2009 11:40:35 +0900 > > Hi, > > makedumpfile version 1.3.4 is released. > Your comments/patches are welcome. > > Changelog: > o New feature > - Support kdump-compressed format for input file. (by Takao Indoh) > A new makedumpfile can read dumpfile which is kdump-compressed format > instead of /proc/vmcore and re-filter it. Does it need to specify either a vmlinux or vmcoreinfo file? Got a failure if not. Note, file vmcore is a full VMCore generated from a 2.6.31 x86_64 kernel and kexec-tools-2.0.0. # ./makedumpfile -c -d 3 vmcore vmcore.1 ... The dumpfile is saved to vmcore.1 ... # /makedumpfile -c -d 31 vmcore.1 vmcore.2 vmcore.1 doesn't contain vmcoreinfo. Specify '-x' option or '-i' option. Commandline parameter is invalid. Try `makedumpfile --help' for more information. makedumpfile Failed. Thanks! CAI Qian > - Add dump filtering on an x86_64 xen domain-0. > A new makedumpfile can exclude unnecessary pages (cache pages, user > process data pages, and free pages) on on x86_64 xen domain-0. > - Save utsname data into disk_dump_header. > A new makedumpfile saves utsname data into disk_dump_header. > The crash utility can output the data from a dumpfile by 'help -n'. > - Add linux-2.6.30 - 2.6.31 support. > > o Bugfix > - Fix some lacks of free(). (by Minoru Usui) > > o Code Cleanup > - Add some comments to code for the readability. > - Remove VERSION_LINUX_2_6_XX. > - Add paddr_to_pfn() and pfn_to_paddr() macros. > - Merge the version information of makedumpfile. > - Merge the PT_NOTE methods of both elf64 and elf32. > - Reduce some indents in exclude_unnecessary_pages(). > - Remove unnecessary spaces. > - read_disk_dump_header() and read_kdump_sub_header(). > - Use DISKDUMP_HDADER_BLOCKS for the readability. > > Explanation of makedumpfile: > To shorten the size of the dumpfile and the time of creating the > dumpfile, makedumpfile copies only the necessary pages for analysis > to the dumpfile from /proc/vmcore. You can specify the kind of > unnecessary pages with dump_level. If you want to shorten the size > further, enable the compression of the page data. > > Download: > You can download the latest makedumpfile from the following URL. > Details of the change are written on the CVS page of the following site. > https://sourceforge.net/projects/makedumpfile/ > > Method of installation: > You can compile the makedumpfile command as follows; > 1. "tar -zxvf makedumpfile-x.y.z.tar.gz" > 2. "cd makedumpfile-x.y.z" > 3. "make; make install" > > Usage: > makedumpfile [-c] [-E] [-d dump_level] [-x vmlinux] dump_mem dump_file > > Example: > If you want to exclude pages filled by zero, cache pages, user pages > and free pages and to enable compression, please execute the following > command. > > # makedumpfile -c -d 31 -x vmlinux /proc/vmcore dumpfile > > > Thanks > Ken'ichi Ohmichi >
