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Full Discussion: How to zip/tar millions of files?
Top Forums UNIX for Advanced & Expert Users How to zip/tar millions of files? Post 302478674 by verdepollo on Wednesday 8th of December 2010 02:20:25 PM
Old 12-08-2010
First of all, thanks all for your suggestions...

Well, even though I have a lot of files, each one of them is pretty small.

I'd say that the whole ~5 million text files do not take more than 50 GB of disk space*

Some details about my system:

Code:
RHEL 5.5 (Tikanga)
Kernel 2.6.18 x86_64
Local ext3 LVM (3 Physical Volumes)
4.5 GB RAM

My Disks:
Code:
SCSI device sdb: 31457280 512-byte hdwr sectors
sd 0:0:0:0: Attached scsi disk sdb
  Type:   Direct-Access                      ANSI SCSI revision: 02
 target0:0:1: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 127)

Code:
[root@atlas ~]# df -i
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/mapper/volAvg-A1lv
                     15466496 4464503 11001993   29% /export
					 
[root@atlas ~]# df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/volAvg-A1lv
                     121790564  89066984  26538244  78% /export

*According to df -k I'm using around 80 GB but that's because I have other files in the same filesystem that are eating up close to 30 GB.

Quote:
When you say somewhere else, I guess you mean a different server ?
A different server or a different filesystem within the same server; whatever approach is faster.

Quote:
Is it safe to assume that the filesystem will be quiescent?
Not exactly quiescent but with very little disk usage since I will run this process at night when nobody uses the server.

Quote:
Do you have spare discs equivalent to say twice the existing space?
Yes, I can attach more disks if necessary.
Last edited by verdepollo; 12-08-2010 at 03:33 PM..
 

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LEARN ABOUT CENTOS

zipmerge

ZIPMERGE(1)						      General Commands Manual						       ZIPMERGE(1)

NAME

       zipmerge - merge zip archives

SYNOPSIS

       zipmerge [-DhIiSsV] target-zip source-zip Op source-zip ...

DESCRIPTION

       zipmerge  merges  the  source zip archives source-zip into the target zip archive target-zip.  By default, files in the source zip archives
       overwrite existing files of the same name in the target zip archive.

       Supported options:

	      -D   Ignore directory components in file name comparisons.

	      -h   Display a short help message and exit.

	      -I   Ignore case in file name comparisons

	      -i   Ask before overwriting files.  See also -s.

	      -S   Do not overwrite files that have the same size and CRC32 in both the source and target archives.

	      -s   When -i is given, do not before overwriting files that have the same size and CRC32.

	      -V   Display version information and exit.

EXIT STATUS

       zipmerge exits 0 on success and 1 if an error occurred.

SEE ALSO

       zipcmp(1), ziptorrent(1), libzip(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>

NiH								   June 4, 2008 						       ZIPMERGE(1)
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