Hi
Can I add disks on the fly to extend the capacity of an existing RAID 5 volume?
It's created on a 4P Advanced SSA Raid Adapter.
I need to extend a volume group, so I figured it would be easiest to extend the "physical disk" which is a RAID5 volume.
Thanks. (1 Reply)
Hi all,
I have an interesting problem. Using remote queues to print using jetdirect printers I am unable to get a printer to print multiple copies of a print job.
command being used:
lpr -P -#3 ./test
(one copy prints)
Also tried:
enq -P -C3 ./test
(same results)
Any ideas?
... (6 Replies)
Hi There!!
I need to reinstall the operating system AIX 5.2 in a RS6000 7026/6H1 that has AIX 4.3 but I need a firmware upgrade that I dón´t know where can I obtain.
- Platform firmware version 3 or later.
Someone can help me please, I will be very grateful !!
Thank´s. (1 Reply)
So im fairly new to AIX and my knowledge is very, very limited but i got my hands on an RS6000 43P model and im trying to get it on the network so i can access it from work. I have pretty much tried everything i can/know how to do by reading up as much as i can but im still lost.
I have the 43P... (2 Replies)
Hello everyone,
I have just joined your forum even though I have been using it on and off for couple of months now. Up until now I have been able to find any information I needed by just browsing this site or performing a Google search, but now I'm stuck!. I was hoping you could help me with... (16 Replies)
Hey guys,
I'm a newbie in Unix world..
Currently in my office lies an old IBM RS6000 which hasn't been maintained for a very long time. The former admin has resigned and we don't have any documentation or whatsoever regarding the old machine. All I know that it is an RS6000 is because of what's... (4 Replies)
Hello all.
I am setting up a queue under AIX 4.2.1 to print to a remote Linux CUPS queue. At present I can print to the queue remotely from Windows but not AIX. What I am seeing is lpstat reads the state of the remote queue but at job submission time I am getting backend exit fatal errors. The... (4 Replies)
Hi,
We have a Unix 3.2v5.0.5.
I installed a printer via scoadmin, HP network printer manager with network peripheral name (hostname and ipadres are in /etc/hosts).
This is the configuration file :
Code:
root@sco1 # cat configurationBanner: on:AlwaysContent types: simpleDevice:... (0 Replies)
I've an old server 1996 RS6000 (Processor 604e) running AIX 5.1.
It started up fine, booted up and connected on 10Mbit with my router. I used to be able to connect to it with telnet but not anymore. I know the IP is right but working with the smit tcpip options, looks like I've changed... (1 Reply)
Discussion started by: Devyn
1 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)