Hallo Marcy, On Mon, 2010-03-29 at 15:46 -0500, Marcy Cortes wrote: > While VMDUMP is handy because it is "always there" under VM, it is so darn > slow that it makes its use really unacceptable for large virtual machines > (more than 2 hours to dump an 8G virtual machine). Even for a small Linux > system of 800M, it's 22 minutes (and that's with a very robust DASD > subsystem, not old junk ;) > > Fortunately, making one with "zipl -d" works well and is fast (3 minutes for > 8G - what the heck is vmdump doing for 2 hours !!??!!) > > My question is can a dump volume created with "zipl -d"from s390-tools 1.5.6 > on sles9 be used to dump a sles 10 (s390-tools 1.6.3) system? > i.e. can I get away with just one? > Or do I need one for each?
This works, if your SLES9 is 64 bit. > Or if I can't use the sles 9 one on sles 10, can I use a sles 10 created one > for sles 9 ? This currently also works, but is not recommended. New tools should always to be compatible with old formats. E.g. the SLES10 tools like "zgetdump" must be able to handle old dumps (e.g. SLES9 dumps). The other way round will not always work. E.g. it could be that a SLES10 dump has a new format that is not supported by the older SLES9 tools. What you can also do is to dump a SLES9 system with a SLES10 dumper and then afterwards copy the dump from SLES10 with a SLES10 zgetdump tool. Best regards, Michael ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
