how will i know if a lun has been already mapped to a vio client
Hi
im logged in to the vio servers now.
when i give
i get the count as 6246
how will i know if a lun has been already mapped to a vio client or it is left free without mapping to any of the vio client ?
Hello,
I have a server running CentOS 5.1 on a virtual machine. Right now, there is one virtual disk on the system. Below are the result when I run the df commmand:
Filesystem.....1K-blocks.........Used.....Available....Use%.....Mounted on... (1 Reply)
I have a list of LUN ID, my task is to find if disk has been added or not. How do I do that? I have been searching the forum and not able to find answer.
thanks (4 Replies)
Hi,
I want to know wheather partition size for installation of vio client can be specified on vio server
example
If I am installing vio server on blade with 2*300gb hard disk,after that I want to create 2 vio client (AIX Operating system) wheather I can specify hard disk size while... (1 Reply)
Hi,
I would like to reboot vio client but I am not able to access vio client(I am not able to get putty) , I am able to get putty of vio server,
is there any command by using which from vio server I can reboot vio client? (3 Replies)
Hi,
I am having single p series blade with Single Physcial CPU with dual core,
on that vio server is installed, I have created vio client allocate 0.9 each cpu , now when I am running prtconf command on vio client it is showing "2" no of processor,
My query using which command it will... (1 Reply)
Hi
I am facing very strange issue on my vio server 5 vio clients are confgured, now I am to connect 3 vio client , i am unable to connect 2 vio client my ip address,subnet mask,gateway is correct.
i have rebooted and reconfigured the ip address, but issue is persists.
Kindly suggest how to... (0 Replies)
Hi
In the vio server when I do # lsattr -El hdisk*, I get a PVID. The same PVID is also seen when I put the lspv command on the vio client partition. This way Im able to confirm the lun using the PVID.
Similarly how does the vio client partition gets the virtual ethernet scsi client adapter... (1 Reply)
Hi
In my vio server I have the below output
$ lsvopt | grep -i SAPSITGS
sapsitgs_cdrom TL12UP.iso 3182
In my vio client lpar I have the below output
root@sapsitgs:/ # lsdev -Cc cdromcd0 Available Virtual SCSI Optical Served by VIO Server
cd1... (1 Reply)
I know the VIOs are generally to be treated as an appliance and one should never drop down to oem_setup_env. In reality however, oem is a very useful tool to get the job done. So that leads me into the question of using the Chef client on a VIO.
Currently a big push to manage all our *nix... (4 Replies)
I have a broken PV in a VIO VG that's used to support client LPARs using LVs. On the client LPAR, I reduced all PVs from the relevant client VG and thus deleted it. I.e. there is no client LPAR using the VIO VG. Yet when I try to reducevg the VIO VG, it complains that the LV hosted on the PV is... (2 Replies)
Discussion started by: maraixadm
2 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)