A friend of mine is fond of saying, "It's best to eat crow while it's hot"... >> Thanks for all the feedback. Everyone seemed to be in agreement >> that I was running out of space on the DDS2 tape. As to why the >> backup worked on a previous build with the same physical disks in a RAID >> 1 mirror, no one could explain precisely what was happening. We all >> waved our hands and blamed in on the data not compressing as well, which >> is probably the case. (The computer scientist in me still wishes I could >> put may hands on the actual compression algorithm.) Of course, if I was a "real" engineer I would have checked twice to make sure the power was plugged in. It turns out that our previous build was NOT using the whole physical disk in the RAID 1 mirror. The two 8.6 GB hard drives in the RAID pack had been split into two system drives. One was about 7.5 GB and the other was about 1 GB (for /tmp). I don't know how I overlooked this fact, but it explains why we were able to backup system drive 0 to a 120 meter DDS2 tape on the old build. Nothing magical about the compression algorithm! >> I don't even have to modify the RAID layout. Instead, during >> the Solaris installation, I opt to "Customize the fdisk Partitions". I >> somewhat arbitrarily selected 1024 cylinders (it's a pretty number) >> which works out to about 8024 MB for slice 2... >> Problem solved! Unfortunately, not quite. We were able to back up drive 0 after reducing the size of the partition. However, we had trouble restoring the back up. You Obviously can't use fdisk -B to partition the drive on the server you are restoring the backup to, because you're right back where you started with a drive that's too big. So I've decided to change the RAID layout and make drive 0 about 7.5 GB. I'll mount /var/tmp on the drive that contains the left over space. John Spurgeon _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Wed Apr 10 11:58:03 2002
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