Hi,
makedumpfile version 1.3.7 is released.
Your comments/patches are welcome.
Changelog:
o New feature
- Add ARM crashdump support. (by Mika Westerberg)
- Add s390x crashdump support. (by Mahesh J Salgaonkar, Ken'ichi Ohmichi)
- Add linux-2.6.35 - 2.6.36 support. (by Ken'ichi Ohmichi)
- Print the execution times of each step. (by Ken'ichi Ohmichi)
Example)
# makedumpfile --message-level 16 -c -d31 /proc/vmcore dump.cd31
STEP [Checking for memory holes ] : 0.000015984 seconds
STEP [Excluding unnecessary pages] : 3.000708797 seconds
STEP [Excluding free pages ] : 0.000030380 seconds
STEP [Copying data ] : 9.000603782 seconds
- (Speed up) Don't search struct page(s) for excluding cache/cache private
/user data, if unnecessary. (by Ken'ichi Ohmichi)
o Bugfix
- Use ARCH_PFN_OFFSET for pfn_to_paddr/paddr_to_pfn translations. (by Mika Westerberg)
- Use ULONGLONG_MAX to for invalid pfn. (by Mika Westerberg)
- Add missing options to the --help output. (by CAI Qian)
- Fix "Copying data" step by including the write time for zero_page. (by Ken'ichi Ohmichi)
- Fix right nr_cpus in kdump main header. (by Ken'ichi Ohmichi)
- Fix the size of "log_end" which has been changed since linux-2.6.25. (by Ken'ichi Ohmichi)
o Code Cleanup
- Fix 'ERROR: do not use assignment in if condition' by checkpatch.pl. (by Masayuki Igawa)
- Merge the almost same codes which print an execution time. (by Ken'ichi Ohmichi)
- Print the offset value if a lseek error happens in readmem(). (by Ken'ichi Ohmichi)
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 git 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
Masayuki Igawa
