Hi,
I am trying to setup redhat native cluster 5, i installed all the required rpms and issued the command service cman start (cman is the cluster manager)
this gives me output...
#service cman start
Starting cluster:
Loading modules... done
Mounting configfs... done
... (0 Replies)
Hello;
I have 2 node Redhat Cluster (RHEL4 U4 and Cluster Suite) I'm using mc_data fiber channel switch for fencing
when I want to fence manually using
fence_mcdata -a x.x.x. -l xxx -p xxxx -n 5 -o disable
following messages appears
fencing node "test1"
agent "fence_mcdata" reports:... (0 Replies)
hello,
During the cluster installation, we are required to enter a cluster name. When this name is used?
I have a shared disk between those 2 nodes. To test NFS failover, what should I do?
PS: I am using VCS 5
thanks (5 Replies)
Hi all
in my server all nfs dependices are online but nfs client is offline
root@BIWAPP1 # svcs -a|grep nfs
disabled Sep_05 svc:/network/nfs/server:default
online Sep_05 svc:/network/nfs/rquota:default
online Sep_05 svc:/network/nfs/mapid:default
online ... (9 Replies)
Hi
i installed samba-client-3.0.23c-2 on Redhat Server but cat not start
#service smb start. it gives error
unrecognized smb
I checked
samba-common-3.0.23c-2
# rpm -qa |grep smb
pam_smb-1.1.7-7.2.1
# rpm -qa |grep samba
samba3-client-3.2.15-40.el5
Could someone help please?
... (1 Reply)
Hi Friends,
I am trying to configure redhat high availability cluster on rhel5 32bit.
As i am not having the RHN subscription, I have to intsall all the cluster suite manually. I am not aware what all are the rpms needs to be installed. Please let me know about the rpms needs to be installed.... (3 Replies)
hi all ,
I'm trying for the Red-hat cluster setup with the ' Enable shared storage support'. But hang up with a error that
"Packages of set "Clustered Storage" are not present in any available repository". I made this setup by installing the rpm manually..I ve attached the rpm list and error... (0 Replies)
Hello Experts,
Please help me with the exact steps on configuring two node cluster on RHEL 6.2,
I failed to configure the simplest cluster by below steps,
1- install RHEL 6.2 64-bit on both nodes
2- add to hosts file of each server ( 1 IP in local NW and another in IP private NW).
x.x.x.x ... (1 Reply)
:b::b:Hello Expert,
I have a query regarding redhat cluster configuration file (/etc/cluster/cluster.conf).
Is there any process to change the location of the configuration file of the cluster. Is there any step in ricci process..
If yes then please explain me how the cluster node will... (0 Replies)
Discussion started by: Pradipta Kumar
0 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)