Cool! But I was looking for dump of memory to capture a kernel problem. There's some good doc here http://linuxvm.org/Present/zSeries06/L17.pdf page 13-16.
Marcy "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Agblad Tore Sent: Tuesday, March 30, 2010 12:12 AM To: [email protected] Subject: Re: [LINUX-390] Dump volume compatibilty If you want to do real quick dump of a volume: - make it a LVM volume - take a LVM backup -s(napshot) to a temporary snapshot volume it's only a definition (sort of) and takes only a few seconds, you can continue work during this, no interrupt - mount the snapshot volume - do your normal backup from this snapshot volume, it will be a backup consistent in time from the time the snapshot backup was defined. - when backup complete, remove the snapshot volume If you also want a real quick restore: - at the same time you are taking that backup, also do a real copy from snapshot volume to an identical volume/disk, just with another mount point. - when this copy is finished, you can restore to this point in time just by remount. takes only a few seconds. Cordialement / Vriendelijke Groeten / Best Regards / Med Vänliga Hälsningar Tore Agblad Volvo Information Technology Infrastructure Mainframe Design & Development SE-405 08, Gothenburg Sweden E-mail: [email protected] http://www.volvo.com/volvoit/global/en-gb/ ________________________________________ From: Linux on 390 Port [[email protected]] On Behalf Of Marcy Cortes [[email protected]] Sent: Monday, March 29, 2010 22:46 To: [email protected] Subject: Dump volume compatibilty 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? Or if I can't use the sles 9 one on sles 10, can I use a sles 10 created one for sles 9 ? Inquiring minds wanna know, Marcy ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
