On Jan 6, 2005, at 1:04 PM, Peter E. Abresch Jr. - at Pepco wrote:
I created a mini disk under z/VM. I formatted it using CMS command ?format 152 t? and all was fine. Under Linux I did ?mke2fs ?b 4096 /dev/dasdc1? and then put data on it. Linux is happy and there are no indications of any problems. However, if I try to access it under z/VM, I receive the following:
acc 152 t DMSACP112S T(152) device error Ready(00100); T=0.01/0.01 13:44:23
It almost appears that device is not formatted anymore but yet the data is there. Where did I go wrong or is this normal for Linux data? In this particular case, the Linux filesystem is ext2 but the problem occurs for Reiserfs as well. I was told I need to correct this problem before continuing with flashcopy. Thanks for any info.
That's just what you'd expect.
"Device error" means that there's no CMS filesystem on the minidisk. And it's totally right: there isn't! There's an ext2 or Reiserfs filesystem on it instead. You should be able to read tracks off it and see your data with something like RXIUCV
A flashcopy volume backup will be fine.
I'm assuming you also did a "dasdfmt" under Linux and "fdasd"; if not, I'm quite surprised that it worked and that Linux is happy from it.
Adam
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