10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I have this :
uname -a
Linux servername 2.6.18-194.11.3.el5PAE #1 SMP Mon Aug 23 15:57:10 EDT 2010 i686 i686 i386 GNU/Linux
df -k
Sys. de fich. 1K-blocs Occupied Disponible Capacity Monted on
/u01/applis 10321208 3190160 6606760 33% /applis
Does it mean... (1 Reply)
Discussion started by: big123456
1 Replies
2. Solaris
Hi,
I am installing TAM-eb components in solaris V10.o, unfortunately am running out of space. when I -df i come across a lot of directories. i would like to know whether there is any way to free some disk space. (10 Replies)
Discussion started by: ichwaiznicht
10 Replies
3. Shell Programming and Scripting
Hi,
I am new to shell scripting, and want to monitor disk space using shell script continously on server, which will shoot mail after crossing threshold limit
Please suggest.
Regards
Manoj (1 Reply)
Discussion started by: manoj.solaris
1 Replies
4. Shell Programming and Scripting
Hi Guys
i have a nice little piece of code then i need to modify so that is does not look at /Voulmes/*
thanks
sub disk_full {
my $i = 0;
open( DF, "df -l|" );
while (<DF>) {
#chomp();
next if (/^\/proc\b/);
$i++;
next if ( $i == 1 );
... (3 Replies)
Discussion started by: ab52
3 Replies
5. Shell Programming and Scripting
Hi
This is my script for disk space monitoring
clear
if
then
echo "You must be root user to execute the script"
fi
ALERT_LEVEL=10
CONSUMPTION_LEVEL= `df -k | awk {'print $5'} | cut -d '%' -f1 | sed "1 d"`
for i in $CONSUMPTION_LEVEL
do
FILE_SYSTEM=`df -k | awk {'print $1'} |... (3 Replies)
Discussion started by: chrs0302
3 Replies
6. Filesystems, Disks and Memory
Hello All-
Am new member to this forum. Have some unix experience. But true believer in it compared to windows.
Have a question regarding the disk space.
I know a command to check the total disk space utilization using:
df -k .
but what is the command to check the same disk space by... (6 Replies)
Discussion started by: milkyway
6 Replies
7. HP-UX
Hi Experts.
I had 100% disk full , even though i have removed 2 GB space still dbf command shows 100%.
How to rectify that. Appreciate your prompt help. Thanks (1 Reply)
Discussion started by: test10002
1 Replies
8. Solaris
I'm a Unix newbie running Solaris 9. After installing a fresh copy on a 40GB drive I noticed the available disk space is 2% free or approximately 200MB available. Is that possible? Did I do something wrong? (4 Replies)
Discussion started by: jbarbuto
4 Replies
9. UNIX for Dummies Questions & Answers
Hello,
Can someone please tell me which command to use to determine the available disk space on a given disk device?
I have to write a shell script that compresses files and stores them in a specific location but I am not sure how "conservative" I should be?
Thanks in advance!
Al. (4 Replies)
Discussion started by: alan
4 Replies
10. UNIX for Dummies Questions & Answers
Hi
I'm trying to install gcc and the installation program tells me that I'm out of disk space! I have just installed the os (using the default settings for partitions and sizes) and have only installed apache on the machine. Can it really be out of disk space already?
How do I check how much... (4 Replies)
Discussion started by: alfabetman
4 Replies
prealloc(2) System Calls Manual prealloc(2)
NAME
prealloc - preallocate fast disk storage
SYNOPSIS
DESCRIPTION
is used to preallocate space on a disk for faster storage operations.
fildes is a file descriptor obtained from a or system call for an ordinary file of zero length. It must be opened writable, because it
will be written to by size is the size in bytes to be preallocated for the file specified by fildes. At least size bytes will be allo-
cated. Space is allocated in an implementation-dependent fashion for fast sequential reads and writes. The EOF in an extended file is
left at the end of the preallocated area. The current file pointer is left at zero. The file is zero-filled.
Using on a file does not give the file an attribute that is inherited when copying or restoring the file using a program such as or (see
cp(1) and tar(1)). It simply ensures that disk space has been preallocated for size bytes in a manner suited for sequential access. The
file can be extended beyond these limits by operations past the original end of file. However, this space will not necessarily be allo-
cated using any special strategy.
RETURN VALUE
Upon successful completion, returns 0; otherwise, it returns -1 and sets to indicate the error.
ERRORS
fails and no disk space is allocated if any of the following conditions are encountered:
[EBADF] fildes is not a valid open file descriptor opened for writing.
[EDQUOT] User's disk quota block limit has been reached for this file system.
[EFBIG] size exceeds the maximum file size or the process's file size limit. See ulimit(2).
[ENOSPC] Not enough space is left on the device to allocate the requested amount; no space was allocated.
[ENOTEMPTY] fildes not associated with an ordinary file of zero length.
EXAMPLES
Assuming a process has opened a file for writing, the following call to preallocates at least 50000 bytes on disk for the file represented
by file descriptor outfd:
WARNINGS
Allocation of the file space is highly dependent on current disk usage. A successful return does not tell you how fragmented the file
actually might be if the disk is nearing its capacity.
AUTHOR
was developed by HP.
SEE ALSO
prealloc(1), creat(2), dup(2), fcntl(2), open(2), prealloc64(2), read(2), ulimit(2), write(2).
prealloc(2)