$ errpt | more
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
3074FEB7 0802050205 T H fscsi1 ADAPTER ERROR
B8113DD1 0802050205 T H fcs1 LINK ERROR
B8113DD1 0802050205 T H fcs1 LINK ERROR
3074FEB7 0802050205 T H fscsi0 ADAPTER ERROR
B8113DD1 ... (0 Replies)
$ errpt | more
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
3074FEB7 0802050205 T H fscsi1 ADAPTER ERROR
B8113DD1 0802050205 T H fcs1 LINK ERROR
B8113DD1 0802050205 T H fcs1 LINK ERROR
3074FEB7 0802050205 T H fscsi0 ADAPTER ERROR
B8113DD1 ... (2 Replies)
Hi all, dummy here.... I have major errors on entering the shell. On login I get:
-bash: dircolors: command not found
-bash: tr: command not found
-bash: fgrep: command not found
-bash: grep: command not found
-bash: grep: command not found
-bash: id: command not found
-bash: [: =: unary... (12 Replies)
hi,
i tried to mount using
$ mount nimsrv01:/export/mksysb_dev/VDEVVIO1 /mksysb
in vios mode.
i got following error..
</code>
Some error messages may contain invalid information
for the Virtual I/O Server environment.
mount: 1831-008 giving up on:... (1 Reply)
Hello, I'm having troubles running scripts on the VIOS. I want to run a simple script like:
lsmap -all | grep vhost
I've created the file with just like this:
$ cat script1.sh
lsmap -all | grep vhost
When I run the script, it returns the following error message:
script1.sh:... (5 Replies)
I would like to hear your opinions, comments, pros and cons about the IVE (Integrated virtual ethernet) and VIOS (virtual i/o server)
With the VIOS can create virtual ethernet and virtual disk
With the IVE I dont need to create the vios and I can have virtual ethernet (physical and logical... (3 Replies)
Can anybody provide me with usefull links to get knowledge how VIOS works and how to configure Lpars on it? I am tired and feel lazy to search through IBM redbooks :-) .. so pls help me :p (3 Replies)
Hello,
Lets say for simplicity that I do not use any vlan config inside my server - one lpar group use hea physical port1, another group hea physical port2. Physical port1 configured as vlan1 on external switch, physical port2 as vlan2.
What is the common practice - should I isolate my vios... (0 Replies)
Hello,
In my environment, I have 2 VIOS. There is 1 lpar uses the first VIOS. Now we would like to move it to second VIOS.
My question is, can we migrate the virtual FC on the lpar to second VIOS?
If not, we have to create new virtual FC on second VIOS and map it to the lpar. This also... (3 Replies)
Discussion started by: Phat
3 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)