Re: help ontape -r failed

You can try like mkfifo /saveinfx/pipe/pfile dd if=/saveinfx/base/myfirstdbsave.dat of=/saveinfx/pipe/pfile bs=512k & Thanks, "Art S. Kagel" wrote: > Joel QUIDORT wrote: > > > > Hi, > > > > I've heard that it's possible to use ontape with named pipe > > > > So I create some directories > > > > /saveinfx/pipe/ > > /saveinfx/base/ > > > > Modify my onconfig > > # System Archive Tape Device > > TAPEDEV /saveinfx/pipe/pfile # Tape device path > > TAPEBLK 512 # Tape block size (Kbytes) > > TAPESIZE 10000384 # Maximum amount of data to put on tape > > (Kbytes)> > > > Then done as informix user some by hand and the rest by script > > /etc/mknod /saveinfx/pipe/pfile p > > chmod 660 /saveinfx/pipe/pfile > > dd if=/saveinfx/pipe/pfile of=/saveinfx/base/myfirstdbsave.dat bs=512k & > > ontape -s -L 0> > > > Seems to work fine, and i got a "myfirstdbsave.dat" file of a certain size. > > > > now trying to do some restore > > > > rm /saveinfx/pipe/pfile > > /etc/mknod /saveinfx/pipe/pfile p > > chmod 660 /saveinfx/pipe/pfile > > dd if=/saveinfx/base/myfirstdbsave.dat of=/saveinfx/pipe/pfile bs=512k & > > > > ontape -r> > > > Please mount tape 1 on /saveinfx/pipe/pfile and press Return to continue ... > > # I press return here > > > > Archive Tape Information > > > > Tape type: Archive Backup Tape > > Online version: Informix Dynamic Server Version 7.30.UC2 > > Archive date: Sun Jul 18 22:33:40 1999 > > User id: informix > > Terminal id: ? > > Archive level: 0 > > Tape device: /saveinfx/pipe/pfile > > Tape blocksize (in k): 512 > > Tape size (in k): 10000384 > > Tape number in series: 1 > > Physical restore failed - function read archive backup failed code -2 errno > > 22 > > > > Program over. > > > > Why it doesnt work ???? > > > > I'm running Informix Dynamic Server Version 7.30.UC2, on SCO OSR 5.04 box. > > > > I know that other tools exists but I'm looking forward for an explanation, > > because > > I'll have to maintain some scripts soon for my job. > > Ontape expects to be able to close and reopen the "tape" several times > and have it rewind to the beginning each time. The dd you are using > does not understand that. For restores pipes are VERY hard to use it > would be better to restore directly from the file you created during > the backup. > > Art S. Kagel -- =============================================================== Umesh Patel On Assignment with Caliber Logistics- ===============================================================