Directory size larger than file system size? Post: 302378202

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Operating Systems Solaris Directory size larger than file system size? Post 302378202 by pludi on Monday 7th of December 2009 08:15:29 AM

12-07-2009

Registered User

Quote:

Originally Posted by sparcman

Thanks for your reply DukeNuke2. If the proc file system is dynamically generated, will it still effect the size of the / file system? My / file system now reports 100% full. Do I need to reboot in order to clear down the /proc file system?

No. If you check the output of mount, you'll see that /proc is treated as a separate mount point, and as such does not add to the usage of the root filesystem.

Also, the files in /proc only represent current processes, so the big files should vanish as soon as the associated process ends.

Quote:

Originally Posted by sparcman

Also this doesn't explain why the file system with the Oracle Temp file read 64GB and the 20GB file system reported 7GB free? Any ideas?

Could be that that was a sparse file.
Example that creates a 100M file on a 10M filesystem(uses Linux Loopback device)

Code:

# pwd
/tmp/sparse_test
# dd if=/dev/zero of=example.img bs=1024k count=10
10+0 records in
10+0 records out
10485760 bytes (10 MB) copied, 0.0421919 s, 249 MB/s
# mkfs -t ext2 example.img
[...]
# mkdir example
# mount example.img example -oloop
# mount
[...]
/tmp/sparse_test/example.img on /tmp/sparse_test/example type ext2 (rw,loop=/dev/loop0)
# df -h
Filesystem            Size  Used Avail Use% Mounted on
[...]
/tmp/sparse_test/example.img
                      9.7M   92K  9.1M   1% /tmp/sparse_test/example
# cd example/
# dd if=/dev/zero of=sparse_file bs=1 count=0 seek=100M
0+0 records in
0+0 records out
0 bytes (0 B) copied, 1.7319e-05 s, 0.0 kB/s
# ll -h
total 12K
drwx------ 2 root root  12K Dec  7 14:09 lost+found
-rw-r--r-- 1 root root 100M Dec  7 14:10 sparse_file
# df -h
Filesystem            Size  Used Avail Use% Mounted on
[...]
/tmp/sparse_test/example.img
                      9.7M   92K  9.1M   1% /tmp/sparse_test/example

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LEARN ABOUT DEBIAN

e2tools

E2TOOLS(7)						 Miscellaneous Information Manual						E2TOOLS(7)

NAME

       e2tools -  utilities to manipulate files in an ext2/ext3 filesystem

DESCRIPTION

       E2tools	is  a  simple  set  of	GPL'ed utilities to read, write, and manipulate files in an ext2/ext3 filesystem. These utilities access a
       filesystem directly using the ext2fs library. I wrote these tools in order to copy files into a linux filesystem on a machine that does not
       have  ext2  support.  Of  course, they can also be used on a linux machine to read/write to disk images or floppies without having to mount
       them or have root access.

       Supported functionality:

       e2cp   copy files

       e2mv   move files

       e2rm   remove files

       e2mkdir
	      create directory

       e2ln   create hard links

       e2ls   list files/directories

       e2tail output the last part of a file

       In general, to specify a directory or file on an ext2 filesystem for the e2tools utilities, use the following form:

	      filesystem:directory_path

       The filesystem can be an unmounted partition or a regular file that's been formatted to contain an ext2 filesystem.  In general, if a  com-
       mand takes multiple file names on the command line, if the first one contains an ext2 file specification, the rest of the files are assumed
       to be on the same filesystem until another one is explicitly stated:

	      /tmp/boot.img:/tmp/file1

	      /tmp/file2

	      /tmp/file3

	      /tmp/boot2.img:/tmp/file4

       Files 1-3 are on /tmp/boot.img and the last file is on /tmp/boot2.img

SEE ALSO

       e2cp(1), e2ln(1), e2ls(1), e2mkdir(1), e2mv(1), e2rm(1), e2tail(1).

AUTHOR

       The e2tools were written by Keith Sheffield <sheff@pobox.com>.

       This manual page was written by Lucas Wall <lwall@debian.org>, for the Debian project (but may be used by others).

								   March 2, 2005							E2TOOLS(7)

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