03-12-2005
Dear friend
Thanks for your reply. I'll try do as you describe.
so i just only add a new disk and sync it
Regards;
Waqar Alam
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SYNC(2) Linux Programmer's Manual SYNC(2)
NAME
sync - commit buffer cache to disk
SYNOPSIS
#include <unistd.h>
void sync(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sync():
_BSD_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
DESCRIPTION
sync() first commits inodes to buffers, and then buffers to disk.
ERRORS
This function is always successful.
CONFORMING TO
SVr4, 4.3BSD, POSIX.1-2001.
NOTES
Since glibc 2.2.2 the Linux prototype is as listed above, following the various standards. In libc4, libc5, and glibc up to 2.2.1 it was
"int sync(void)", and sync() always returned 0.
BUGS
According to the standard specification (e.g., POSIX.1-2001), sync() schedules the writes, but may return before the actual writing is
done. However, since version 1.3.20 Linux does actually wait. (This still does not guarantee data integrity: modern disks have large
caches.)
SEE ALSO
bdflush(2), fdatasync(2), fsync(2), sync(8), update(8)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2010-09-20 SYNC(2)