11
votes
How to make systemd-resolved stop trying to use offline DNS servers?
DNS professionals have known for long that if you want DNS service resiliency in any network, you do not leave that decision up to the client implementation.
It is a too important decision, to leave ...
- 58k
4
votes
Accepted
Archiving program that adds redundancy
Finally, I found parchive (V1 is obsolete, use par2), which is open-source and very efficient.
It was originally used on Usenet : https://en.wikipedia.org/wiki/Parchive
It has options for percentage ...
- 183
4
votes
How to shard file into n-out-of-m redundancy (erasure code e.g. kind of reed solomon)?
You would want to look at
https://pypi.org/project/zfec/
This does exactly what you are looking for.
E.g.
zfec -k3 -m6 input.dat
creates 6 files, 3 of which are necessary to reconstruct the ...
- 437
4
votes
Protecting data against bit rot
This is an older question, but still relevant in 2019.
Yes, parity files are a viable solution to bit-rot
While there are detriments to non-filesystem-level parity checking, there is also one huge ...
- 141
2
votes
How to shard file into n-out-of-m redundancy (erasure code e.g. kind of reed solomon)?
You can use gfshare for this: http://manpages.ubuntu.com/manpages/bionic/man7/gfshare.7.html
apt-get install libgfshare-bin
For example, with 2-of-7.
gfsplit -n 2 -m 7 myfile.txt
Only two shares can ...
- 1,289
2
votes
Most ironclad way to make root installation redundant and maximize uptime? RAID, ZFS or something else?
Most Ironclad way & maximize uptime...
I think the question overall is a good one but will be problematic to answer given the current state of everything that makes up linux, and hardware. There ...
- 9,122
2
votes
Accepted
Most ironclad way to make root installation redundant and maximize uptime? RAID, ZFS or something else?
Depends on needs, but you have a few options. My personal choice is to use lvm mirroring on a root volume, and any other that is critical to my sanity (/home on my laptops and workstations).
As for ...
2
votes
Archiving program that adds redundancy
You can do it with rar. From the man page:
rr[N] Add data recovery record. Optionally, redundant information
(recovery record) can be added to an archive.
- 31
1
vote
Building redundancy by creating multiple nfs mounts to a single location
A few times of a year, I found that when the nfs server exporting the home directory or the LDAP server went offline for various reasons, the entire cluster hanged. I am trying to build some ...
- 15.5k
1
vote
Accepted
When I get a font package with OTFs, should I also keep the Web versions?
No need to keep the web fonts.
For local use, the OTF files are sufficient. You’d only need the other files if you wanted to make them available for use in a web site; and then, you still wouldn’t ...
- 481k
1
vote
How to make systemd-resolved stop trying to use offline DNS servers?
Using multiple nameservers via DHCP is for resiliency, not redundancy. It appears you're attempting to use multiple nameservers in the sense that each client will track if a nameserver becomes ...
slm♦
- 380k
1
vote
Accepted
How to use one path in heredocument
A here-document is just a document. A script in a here-document is just a script.
Your script could be written
cd "$HOME/own_scripts" || exit 1
./1.sh
./2.sh
Or, if all the scripts that you'd like ...
- 356k
1
vote
Protecting data against bit rot
I wrote a lightweight tool to detect bitrot called chkbit.
It creates a hash that follows your data independent of the filesystem. So chkbit allows you to verify the integrity of your data on your ...
- 6,373
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