Henk 1529 wrote: > I'm trying to create a mirrored filesystem using software RAID-1 and > LVM2. The creation of the RAID-1 device went oke (see output bellow). Also > the pvcreate looks to be going fine. But when I do a pvdisplay it says "No > physical volume label read from /dev/md0". > > Where using SLES9 (SuSE), the primary packages used here are; I'd bet a beer on that your physical volumes (dasds) are CDL format? You can check that in /proc/dasd/devices. If this is the case, you need to: a) create a partition on each of the dasds using fdasd, make it maximum size b) use the partitions to form your software raid, not the "whole" disk [/dev/dasdX1 instead of /dev/dasdX]
or format that dasd using linux disk layout - see man page of dasdfmt. Reason: The CDL disk layout contains label blocks in a way that other mainframe operating systems can detect these volumes and set them online for backup purposes. That's especially true for z/OS. Unfortunately, those label blocks do have "ugly" length different from 4k or whatever blocksize you selected on format. Our s390-tools use regular read+write calls to access that data, the blocks are visible as regular block-device blocks to applications. Using an application that is not aware of that fact to read&write on that blocks causes unpredictable effects. -- Carsten Otte IBM Linux technology center ARCH=s390 ---------------------------------------------------------------------- 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
