I have just installed 5.0.7 of openserver and forgot to create a /u filesystem.
I have a root filesystem that takes up most of the hard disc space and I want to reduce the size of that and create a /u.
I have tried divvy amd mkdev fs but to no avail.
Could somebody give me some idea as to how I... (2 Replies)
Hello, this is my first post.
I have a user who cannot create a file over 2 GB's in size eventhough the FS is large file enabled and I added a special stanza in /etc/security/limits to allow an unlimited file size for this particular user (user1 - see below).
ibm:/home/root (4062)#cat... (7 Replies)
Hi All:
I am using an adaptor between a 1TB SATA hard drive and solaris 8 box with 68 pin scsi. I use the format utility to partition the HD which works fine but when I use newfs, I get some errors. I will place them below.
I have blocked and the error message is in red.
Anybody got any... (1 Reply)
Hi,
Has anyone ever encountered the following scenario:
I am working on a SUN server with solaris 10 installed and veritas managing the filesystem. One of the file systems has become full:
df -kh /ossrc/dbdumps
Filesystem size used avail capacity Mounted on... (6 Replies)
Hi,
I am unable to create/open any file in vi editor for normal user, though using root I am able to create/open any file, using redhat 5.5,
example
vi test
it showing nothing after entering command (9 Replies)
Hi,
The solaris filesystem /u01 shows available space as 100GB, and used space as 6 GB.
The Problem is when iam trying to install some software or copy some files in this file system /u01 Iam unable to copy or install in this file system due to lack of space.
ofcourse the software... (31 Replies)
Hi,
I am trying to tar a directory structure. but unable to do due to a symbolic link. Please help
indomt@behpux $ tar -cvf test.tar /home/indomt
a /home/indomt symbolic link to /dxdv/03/ap1dm1
Thanks (1 Reply)
Hi
I have the following difficulty:
the NetApp admin has clone one file system from one red hatserver and presented this cloned LUN into another redhat server.
I can see the LUN as:
fdisk -l
Disk /dev/sda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders
Units =... (1 Reply)
Hi,
I have inherited this AIX 5.3 host. I'm unable to increase the /usr file system. It gives me this error.
What needs to be done to remove this error?
vios:/home/padmin$ chfs -a size=+128M /usr
0516-304 lquerypv: Unable to find device id 0002ef4df616f9690000000000000000 in the Device
... (14 Replies)
Discussion started by: dn888
14 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)