05-31-2007
block size
Hi All,
drwxr-xr-x 2 root root 4096 May 31 14:47 test
Please let me know here 4096 indicating what?
Thanks & Regards,
Bache
10 More Discussions You Might Find Interesting
1. Filesystems, Disks and Memory
Hi,
Somehow i have forgotten a comand that displays me the block size of the unix filesystem. Can someone letme know this command
regards
penguin (5 Replies)
Discussion started by: linuxpenguin
5 Replies
2. Filesystems, Disks and Memory
AIX 4.3.3
How can I find the os block size?
How can I change the OS Block Size?
When and where does the os block size get set?
I am running oracle 8.1.7 and am under the impression I need to set my os block size = oracle block size which is 8k.
Any insight on this would be... (1 Reply)
Discussion started by: kburrows
1 Replies
3. Solaris
how do you determine block size for a file system? In solaris 5.8 (3 Replies)
Discussion started by: csaunders
3 Replies
4. UNIX for Dummies Questions & Answers
Hello Unix guru's
I want to check my OS Block size for the Solaris 8
Following is one of the line from df -g command.
Can anybody help to interpret the same.
/u03 (/dev/vx/dsk/oradg/vol03): 8192 block size 8192 frag size
205463552 total blocks 50433792... (1 Reply)
Discussion started by: Dilippatel
1 Replies
5. Shell Programming and Scripting
i wrote this code to figure if two identical directories on different devices one on a partition and one on a loop had the same total size for -size +0 file only in recrusive tree form.:
awk '$1 ~ /^-/{total=i;i<=NR;i+=$5;print $0}END{print total}'
file1.... .
the output of du -hb was slightly... (2 Replies)
Discussion started by: moxxx68
2 Replies
6. UNIX for Dummies Questions & Answers
If I execute this command:
$ ls -lt | awk '{print $5}' | sort -nr |head -1
it returns the following value
57441881
If I execute this command:
$ ls -s | sort -nr | head -1 | cut -d" " -f1
it returns the same file but now in block size
112208
Is there... (1 Reply)
Discussion started by: mh53j_fe
1 Replies
7. AIX
Hi, I try to change the block size from 512 to 0, but it send this message:
0514-068 Cause not know
Can someone help me whith this? (3 Replies)
Discussion started by: Ruben78
3 Replies
8. UNIX for Advanced & Expert Users
Hello,
in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a ... (4 Replies)
Discussion started by: rarino2
4 Replies
9. Red Hat
Hi Guys,
I am running Linux 2.6.18-164.el x86_64 how do i check the block size?
Thanks in advance... (1 Reply)
Discussion started by: Phuti
1 Replies
10. HP-UX
Accordingly a lot of manuals - if you have block size 8KB and trying to write a 1KB file to the block, as result you waste 7KB of the block space. But recently I noticed about Fragments of File Block. In same case if you have File Block 8KB and Fragment size 1KB - you can save your block space,... (6 Replies)
Discussion started by: jess_t03
6 Replies
MMAP2(2) Linux Programmer's Manual MMAP2(2)
NAME
mmap2 - map files or devices into memory
SYNOPSIS
#include <sys/mman.h>
void *mmap2(void *addr, size_t length, int prot,
int flags, int fd, off_t pgoffset);
DESCRIPTION
The mmap2() system call operates in exactly the same way as mmap(2), except that the final argument specifies the offset into the file in
4096-byte units (instead of bytes, as is done by mmap(2)). This enables applications that use a 32-bit off_t to map large files (up to
2^44 bytes).
RETURN VALUE
On success, mmap2() returns a pointer to the mapped area. On error -1 is returned and errno is set appropriately.
ERRORS
EFAULT Problem with getting the data from userspace.
EINVAL (Various platforms where the page size is not 4096 bytes.) offset * 4096 is not a multiple of the system page size.
mmap2() can return any of the same errors as mmap(2).
VERSIONS
mmap2() is available since Linux 2.3.31.
CONFORMING TO
This system call is Linux-specific.
NOTES
Nowadays, the glibc mmap() wrapper function invokes this system call rather than the mmap(2) system call.
On ia64, the unit for offset is actually the system page size, rather than 4096 bytes.
SEE ALSO
getpagesize(2), mmap(2), mremap(2), msync(2), shm_open(3)
COLOPHON
This page is part of release 3.25 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 2008-04-22 MMAP2(2)