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)
I am new to being a Unix admin and have a question about replacing some hardware. I have a K class box using HP-UX 10.20 with three disks. Two of the drives are in one logical volume. Every 3 or 4 days, the syslog is showing that one of these drives is experiencing "POWERFAILED" and then recovering... (6 Replies)
Hi people, I have been using my disk for quite a long time but the other day I heard the drive making some noise and had to restart the system again. But when I did that the disk would not boot and I fear that the data might be deleted or lost. So, if you people have any know about the ways to get... (1 Reply)
Hi people,
I have been using my disk for quite a long time but the other day I heard the drive making some noise and had to restart the system again. But when I did that the disk would not boot and I fear that the data might be deleted or lost. So, if you people have any know about the ways to... (2 Replies)
hi all,
have a solaris 9 OS and a SAN disk which used to work fine is not getting picked up by my machine. can anyone point out things to check in order to troubleshoot this ??
thanks in advance. (3 Replies)
in red hat 4, 5 any one know any commands or any scritps to monitor HP DL 380 G5/6 server and trigger alarm when hard disk failed.
thanks for all support
---------- Post updated at 02:45 PM ---------- Previous update was at 12:00 PM ----------
does HP ProLiant Support Pack support is... (4 Replies)
Hello guys,
I have two servers performing the same disk operations. I believe one server is having a disk's impending failure however I have no hard evidence to prove it. This is a pair of Netra 210's with 2 drives in a hardware raid mirror (LSI raid controller). While performing intensive... (4 Replies)
Hi there,
Don't know if my title is relevant but I'm dealing with dangerous materials that I don't really know and I'm very afraid to mess anything up.
I have a Debian 5.0.4 server with 4 x 1TB hard drives.
I have the following mdstat
Personalities :
md1 : active raid1 sda1 sdd1... (3 Replies)
Hi all,
I have encountered the issue with the hard disk, the disk is failed and need to replace by the new one.
As my understanding, this is just to take out the failed disk and insert the new ones, and that's all.
But the third party hardware vendor said, there should be another procedure... (9 Replies)
Discussion started by: Phat
9 Replies
LEARN ABOUT CENTOS
fb.modes
fb.modes(5) Linux frame buffer utils fb.modes(5)NAME
fb.modes - frame buffer modes file
DESCRIPTION
/etc/fb.modes contains an unlimited number of video mode descriptions. The general format of a video mode is:
mode
geometry <xres> <yres> <vxres> <vyres> <depth>
timings <pixclock> <left> <right> <upper> <lower> <hslen> <vslen>
options <value>
rgba <red,green,blue,alpha>
endmode
OPTIONS
geometry options:
xres visible horizontal resolution (in pixels)
yres visible vertical resolution (in pixels)
vxres virtual horizontal resolution (in pixels)
vyres virtual vertical resolution (in pixels)
depth display depth (in bits per pixel)
timing options:
pixclock
length of one pixel (in picoseconds)
left left margin (in pixels)
right right margin (in pixels)
upper upper margin (in pixel lines)
lower lower margin (in pixel lines)
hslen horizontal sync length (in pixels)
vslen vertical sync length (in pixel lines)
rgba options (only valid with truecolor):
red red color bitfields (in length or length/offset)
green green color bitfields (in length or length/offset)
blue blue color bitfields (in length or length/offset)
alpha alpha color bitfields (in length or length/offset)
other options:
the first value of this options is the default
hsync {low|high}
the horizontal sync polarity
vsync {low|high}
the vertical sync polarity
csync {low|high}
the composite sync polarity
gsync {low|high}
the sync on green polarity
bcast {false|true}
enable or disable broadcast modes. If enabled the frame buffer generates the exact timings fot several broadcast modes (e.g.
PAL or NTSC). Note that this option may not be supported by every frame buffer
extsync {false|true}
enable or disable external resync. If enabled the sync timings are not generated by the frame buffer device and must be pro-
vided externally instead. Note that this option may not be supported by every frame buffer device
laced {false|true}
enable or disable interlace. If enabled the display will be split in two frames, each frame contains only even and odd lines
respectively. These two frames will be displayed alternating, this way twice the lines can be displayed and the vertical fre-
quency for monitor stays the same, but the visible vertical frequency gets halved
double {false|true}
enable or disable doublescan. If enabled every line will be displayed twice and this way the horizontal frequency can easily
be doubled, so that the same resolution can be displayed on different monitors, even if the horizontal frequency specifica-
tion differs. Note that this option may not be supported by every frame buffer device
nostd <number>
select nonstandard video mode
accel {false|true}
enable or disable hardware text acceleration
grayscale {false|true}
enable or disable graylevels instead of colors
INTERNALS
Generally a frame buffer display is organized as follows:
+---+---------------+---+---+
| | ^ | | |
| | | 5 | | |
| | v | | |
+---#################---+---+
| # ^ # | |
| # | # | |
| # | # | |
| 1 # | 2 # 3 | 4 |
|<->#<------+------>#<->|<->|
| # | # | |
| # | 6 # | |
| # | # | |
| # v # | |
+---#################---+---+
| | ^ | | |
| | | 7 | | |
| | v | | |
+---+---------------+---+---+
| | ^ | | |
| | | 8 | | |
| | v | | |
+---+---------------+---+---+
1 left margin
2 xres
3 right margin
4 horizontal sync len
5 upper margin
6 yres
7 lower margin
8 vertical sync len
The area bordered with `#' is the visible display area. Horizontal and vertical frequencies can now easily be calculated, for this the sum
of horizontal or vertical values are important
htotal = left + xres + right + hslen
vtotal = upper + yres + lower + vslen
The length of one line can now be calculated with pixclock
line = pixclock * htotal
and we have the horizontal frequency
hfreq = 1E12 / line = 1E12 / (pixclock * htotal)
To get the vertical frequency vtotal must eventually adjusted. If the display is laced, vtotal must be halved or if the display is a dou-
blescan one, vtotal must be doubled. Now we can calculate the length of one frame
if (lace) vtotal /= 2
if (double) vtotal *= 2
frame = vtotal * line
and we get also the vertical frequency
vfreq = 1E12 / frame = hfreq / vtotal
SEE ALSO fbset(8), fbdev(4)2.1 2003-08-07 fb.modes(5)