Now, if I create & write into a file /tmp/mnt/fileOne,
will there be a any overhead compared to writing a file directly on /tmp/fileOne?
The difference is that, in the first case I am writing into the /dev/loop0 device. I understand that the /dev/loop0 will have its own inode table and other entries required to retrieve/access the file.
But would there be any difference related to read/write buffers allocated to the device.
Will there be two levels of indirection in this case?
(i,e) A separate RW buffer for /dev/loop0 taken care of by the loop device driver and another level of RW buffer for the physical harddrive?
I'd expect extra overhead on open, only. Once open, the fd writes to a disk and updates an inode on disk, either way. There might be more contention for any device level locks for /tmp device than the new, relatively exclusive device.
Try some io with and without fsync, close-open, seeks (to flush buffers) and see.
Hi,
In our HP-UX B.11.11. I could not find dev/urandom and dev/random
Are all pseudo-devices implemented as device drivers, or in need to run /configure some package to install the package to have dev/urandom.
Please help (4 Replies)
Objective: To recreate the partitioning setup of /dev/sda on /dev/sdc
How would I parse the below information and initialize variables
(an array?) that can be used to build sgdisk commands in a script, regardless of the number of partitions?
Something along the lines of:
sgdisk -n... (12 Replies)
Hello AIXians,
I can't boot my AIX, it hangs and stops at the code error: 0518
After searching google, I knew the problem is due to problems in File Systems.
So the solution is booting from any bootable media, then run these commands in maintenance mode:
#fsck -y /dev/hd4
#fsck -y... (3 Replies)
Hi,
How can i check that i am using RAW devices for storage in my AIX machine...
Also after adding a LUN from storage to a aix host, when i check /dev in the host, i can see both rhdisk and hdisk with same number
eg:
dcback1(root):/dev>ls -lrt | grep disk12
crw------- 1 root ... (4 Replies)
So, we removed a LUN from the SAN and the system is refusing to remove the references to it in the /dev folder. I've done the following:
devfsadm -Cv
powermt -q
luxadm -e offline <drive path>
luxadm probe
All those commands failed to remove the path. The drive stills shows up as <drive... (13 Replies)
How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&"
echo "hello" > /dev/null 2>&1
echo "hello" > /dev/null 2>1 (3 Replies)
Hello,
i am using finch (unix commandline instant messaging client using libgnt) which is running connected to /dev/pts/1
Now I would like to "remote control" the program by sending the key combinations normally typed on the keyboard from a programm in another shell. So I tried:... (0 Replies)
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)