Synchronization in copying multiple files to a directory
Hi Friends,
My goal is to copy 1000 of files of same filesize simultaneously to a directory. i.e i do multiple copies into a same directory. What i feel here is, at some 1000th iteration, few transfers ends in advance before some transfers start. I need to get synchronized file transfers so that all the 1000 copies run simultaneously.
To achieve this, i follow the below procedure.
i stop all the cp processes when they start and continue them after reaching 1000th cp. What is happening here is the cp does not stop at same filesize and continuing them again results in the same synchronization problem. i.e few transfers ends in advance before some transfers continue again. Am not sure whether this could be possible to achieve synchronization or am following wrong procedure.
My script is below.
Code of cp_child.sh is
Also, is it possible to stop the cp process at specific filesize? If so, how to monitor the written file for its changing file size?
Thanks for ur patience.
Awaiting possible solutions.
Amio
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LEARN ABOUT BSD
mcopy
MCOPY(1) General Commands Manual MCOPY(1)NAME
mcopy - copy MSDOS files to/from Unix
SYNOPSIS
mcopy [ -tnvm ] sourcefile targetfile
mcopy [ -tnvm ] sourcefile [ sourcefiles... ] targetdirectory
DESCRIPTION
Mcopy copies the specified file to the named file, or copies multiple files to the named directory. The source and target can be either
MSDOS or Unix files.
The use of a drive letter designation on the MSDOS files, 'a:' for example, determines the direction of the transfer. A missing drive des-
ignation implies a Unix file whose path starts in the current directory
Mcopy will allow the following command line options:
t Text file transfer. Mcopy will translate incoming carriage return/line feeds to line feeds.
n No warning. Mcopy will not warn the user when overwriting an existing file.
v Verbose mode.
m Preserve the file modification time.
If the target file already exists, and the -n option is not in effect, mcopy asks whether or not to overwrite the file.
MSDOS subdirectory names are supported with either the '/' or '' separator. The use of the '' separator or wildcards will require the
names to be enclosed in quotes to protect them from the shell.
The mcd command may be used to establish the device and the current working directory (relative to MSDOS), otherwise the default is A:/.
SEE ALSO mcd(1), mread(1), mwrite(1)BUGS
Unlike MSDOS, the destination directory may not be omitted.
The '+' operator (append) from MSDOS is not supported.
No other Mtools command requires the use of a drive letter designation on MSDOS files.
local MCOPY(1)