savedump
Usage
savedump [-c none|rle|gzip][-x [u][b][p][f]][-t <dir>][-i][-v]
Description
This command can be used for two purposes:
1. Create a live dump: When /dev/mem is specified at startup of lcrash,
this command can be used to create a live dump.
2. Reduce dump size: When a system dump is specified at startup of lcrash,
this command can be used to reduce the size of the system dump using
compression and the '-x' option for discarding special memory pages like
buffer cache, page cache, free and userspace pages. This capability is
especially useful, when huge dumps should be transfered e.g. over a network.
OPTIONS:
-c: compression type:
- none: No compression:
- rle: Runlength encoding
- gzip: gzip compression (default)
-x: exclude memory regions to reduce dump size:
- u: Exclude <U>ser pages
- b: Exclude <B>uffer cache pages
- p: Exclude <P>age cache pages
- f: Exclude <F>ree (unused) pages
-t: target directory where dump is written (default is current directory)
-i: write info file which describes dump content
-v: verbose output