I created filesystem XFS on partition hda8 with subvolume real-time on partition hda5:
Code:
mkfs.xfs -r rtdev=/dev/hda5 /dev/hda8
and i mounted it:
Code:
mount -t xfs -o rtdev=/dev/hda5 /dev/hda8 /xfs
But I don't know how can I use this partition hda5 with subvolume real-time. I don't know how to create directories, copy files to it and another. Thanks for all answers!
The realtime section is used to store the data of realtime files.
These files had an attribute bit set through xfsctl(3) after file cre-
ation, before any data was written to the file. The realtime section
is divided into a number of extents of fixed size (specified at
mkfs.xfs(8) time). Each file in the realtime section has an extent
size that is a multiple of the realtime section extent size.
xfsctl is a C function call.
Last edited by Corona688; 02-24-2010 at 12:02 PM..
I don't know any utility program that does this, it's just a generic C function for editing XFS extended attributes. Here's an example C program that calls it:
Code:
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <xfs/xfs.h>
#define DIE(X) do { perror(X); goto EXIT_FAIL; } while(0)
int main(void)
{
struct fsxattr attrib;
const char *xfs_filename="/opt/public/Read Me.txt";
int fd=open(xfs_filename, O_RDONLY);
if(fd < 0)
DIE("Couldn't open file");
// Get extended attributes for file
if(xfsctl(xfs_filename, fd, XFS_IOC_FSGETXATTR, &attrib) != 0)
DIE("Couldn't read attributes");
// Set the realtime status bit
attrib.fsx_xflags |= XFS_XFLAG_REALTIME;
// Attempt to set these attributes on the file
if(xfsctl(xfs_filename, fd, XFS_IOC_FSSETXATTR, &attrib) != 0)
DIE("Couldn't set attributes");
close(fd);
return(0);
EXIT_FAIL:
if(fd >= 0) close(fd);
return(1);
}
# date +%s -d "Mon Feb 11 02:26:04"
1360567564
# perl -e 'print scalar localtime(1360567564), "\n";'
Mon Feb 11 02:26:04 2013
the epoch conversion is working fine. but one of my application needs 13 digit epoch time as input
1359453135154
rather than 10 digit epoch time 1360567564... (3 Replies)
Hi
Not sure if this can be achieved by unix , but still would like to know if there is any way by which I can do the below given logic
cat sam1 > out1
cat sam2 > out2
when either one of this finished the the next file shd be written in that file, meaning
cat sam3 >> out1/out2... (2 Replies)
Dear experts,
I have an epoch time input file such as : -
1302451209564
1302483698948
1302485231072
1302490805383
1302519244700
1302492787481
1302505299145
1302506557022
1302532112140
1302501033105
1302511536485
1302512669550
I need the epoch time above to be converted into real... (4 Replies)
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i am wondering if there is a way to convert from EPOCH time to the standard tim, may be using a script or some thing else???????
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