04-08-2013
data block corruption
Thanks for your reply,
Actually i am using oracle 11g database and i have perform newfs command on the disk which was added to oracle (ASM) database.
And the error which i am receiving is oracle data block corruption (ORA-01110,ORA-01578)when i access the data.
is there any way to undo newfs command which i have performed.
Thanks
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LEARN ABOUT FREEBSD
dumpfs
DUMPFS(8) BSD System Manager's Manual DUMPFS(8)
NAME
dumpfs -- dump UFS file system information
SYNOPSIS
dumpfs [-f] [-l] [-m] filesys | device
DESCRIPTION
The dumpfs utility prints out the UFS super block and cylinder group information for the file system or special device specified, unless the
-f, -l or -m flag is specified. The listing is very long and detailed. This command is useful mostly for finding out certain file system
information such as the file system block size and minimum free space percentage.
If -f is specified, a sorted list of all free fragments and free fragment ranges, as represented in cylinder group block free lists, is
printed. If the flag is specified twice, contiguous free fragments are not collapsed into ranges and instead printed in a simple list.
Fragment numbers may be converted to raw byte offsets by multiplying by the fragment size, which may be useful when recovering deleted data.
If -l is specified, the pathname to the file system's container derived from its unique identifier is printed.
If -m is specified, a newfs(8) command is printed that can be used to generate a new file system with equivalent settings. Please note that
newfs(8) options -E, -R, -S, and -T are not handled and -p is not useful in this case so is omitted. Newfs(8) options -n and -r are neither
checked for nor output but should be. The -r flag is needed if the filesystem uses gjournal(8).
SEE ALSO
disktab(5), fs(5), disklabel(8), fsck(8), newfs(8), tunefs(8)
HISTORY
The dumpfs utility appeared in 4.2BSD.
BSD
May 16, 2013 BSD