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urgent solutin needed

Created: 09 May 2013 | 6 comments

I am executing below command through script  to restore volumes

ssh -p 22 root@ dd if=/dev/rmt/0n ibs=4096b | (cd /mnt; vxrestore -c -r -b 4096 -f -)

after restoring thre or four volimes, its ending with below message

===> Verifying ossdg/JUMP 2013-05-09 09:15:48
    Positioning tape at block 3
    Creating ossdg/JUMP_verify (12288 MB)
    New vxfs FS on JUMP_verify
    vxrestore -c JUMP_verify
    Using vxrestore to receive root@ to /mnt

UX:vxfs vxrestore: ERROR: V-3-20068: cannot open /dev/tty: No such device or address

and next volume restore doesnot start

I have tried couple of times and it gave the same error for different volumes each time and it stucks randomly

please suggest

Operating Systems:

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rsharma1's picture

Hi Symsonu,

                          You'll need to consider using a temporary dump file to read inputs for vxrestore, rather than using the STDIN -if you must use a non-interactive script.

In you command you use '-'   (after the -f argument) which implies reading from stdin.

There are situations where vxrestore expects user input and this method of using stdin might not work everytime inside scripts.  Theres an old technote that has more details on using the workaround but the advised steps are still valid:

symsonu's picture

It restores three four sometimes 10 volumes and then randomly fail for any volume

symsonu's picture

However if it lookinfor  input like 'y' from user , it should be the case in each volume restore.

How come it restores few volumes in non-interactive mode and then it fail for one

rsharma1's picture

only for some restores the user input might be prompted & not for others only for specific FS, vxrestore might want to correct/reset the permissions/mode etc and seek user confirmation

symsonu's picture

technote say that If I use  file instead of stdin

then  vxrestore will not  ask interactive question like set mode  ? y/n

Is my understanding right ?

rsharma1's picture

yes,you got it right. In addition use the '-e ignore' switch with vxrestore to ignore any extent attribute warning messages. Incase every extent attribute is to be preserved, use the commands interactively per restore, -outside of the script.