van Sleeuwen, Berry wrote: > Hello Mark, > > I meant fast in a way that the / is copied and then changes the hostname and > IP address. No other fancy things, just a default environment for our support > staff to play around with. > > The cloning process is loosly based on the cloning scripts from redp4322. The > dasd is copied using DASDFMT and dd. Both source (installation machine) and > targets are identical, other than the obvious different location of the > minidisk extents. The / is a 3338 cylinder minidisk so there it even uses the > same minidisk extents but on different DASD volumes. There is one thing I now > see, I first regarded as an error due to new disks, but it is still present > even when the disks were in use for the guest before. When the copy is done > there are some IO errors. >
FLASHCOPY is still faster ;-) > 08/08/19 13:41:20 NLZLX920 VMLXES21: end_request: I/O error, dev dasdd, > sector 361776Ÿprintk: 630 messages suppressed.ŸBuffer I/O > 08/08/19 13:41:20 NLZLX920 VMLXES21 error on device dasdd, logical block > 45222Ÿlost page write due to I/O error on dasddŸBuffer > 08/08/19 13:41:20 NLZLX920 VMLXES21 I/O error on device dasdd, logical bl > > The disk is linked, then DASDFMT and dd. It looks like the IO errors appear > within the dd part of the copy process. But how to fix that? Should the guest > have some mdisk option to avoid errors? > > Thanks, Berry. > If doing a dd from linux and the minidisks are identical in size, then one must assume that you have the rights to write to all cylinders. If you issue a vmcp q v da - are source and target the same number of cylinders? I also assume that the source and target are not mounted to Linux while the dd is running? Have you done an fsck on the source volume to ensure it is good? Are you specifying any dd options? Can you do a foreground dd (with -v) and reproduce the error? Is z/VM logging anything - EREP? mark ---------------------------------------------------------------------- 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
