Questions tagged [zstd]
The zstd tag has no usage guidance.
10
questions
0
votes
1answer
28 views
zst compression not supported by apt/dpkg
I'm running Debian, namely:
# uname -A
Linux martlins2 5.10.0-8-amd64 #1 SMP Debian 5.10.46-4 (2021-08-03) x86_64 GNU/Linux
and for some time I see some errors telling that some parts of some ...
1
vote
1answer
97 views
How to tell if btrfs subvolumes are actually compressed or not
I have mounted Btrfs subvolumes (including /home) with the compress=no option in /etc/fstab. However, when I run btrfs inspect-internal dump-super -a <device_name> (both, on the running system, ...
0
votes
1answer
24 views
tar creates an absolute sub directory within the compressed file
I would like to tar a folder using zstd. My folder contains subfolders a and b.
I am tar-ing using this:
tar --zstd -cvf /dest/path/to/output/archive.tar.zstd /full/path/to/src/folder
However, this ...
1
vote
1answer
77 views
Is there an equivalent of zdiff for zstandard
Is there an equivalent of the gzip utility zdiff(1), but for zstandard?
I have not been able to find anything in the zstandard repository other than zstdgrep and zstdless.
7
votes
1answer
758 views
Is there a compression tool with an arbitrarily large dictionary?
I am looking for a compression tool with an arbitrarily large dictionary (and "block size"). Let me explain by way of examples.
First let us create 32MB random data and then concatenate it to itself ...
2
votes
1answer
670 views
How can I separate multiple files from single file caused by zstd -r folder -o output.zst?
I didn't read enough the manual and run the following command
$ zstd -r folder -o output.zst
The following command gave me back a single file called output
$ unzstd output.zst
The output file ...
2
votes
0answers
34 views
Avoid pipeline stalls from write caching to usb drive
I have the following process I use for backups:
btrfs send snapshots/home-2016-06-04 |
zstd --verbose -T4 - |
gpg --batch --passphrase-file /tmp/secret --compress-algo none --symmetric - >
/mnt/...
8
votes
2answers
12k views
compressing and decompressing dd image - zstd instead of gzip
Earlier I was using fsarchiver to create compressed partition image. Due to some weird behavior I am choosing to replace it with dd.
However, I like how fsarchiver compressed with zstd.
So, I ...
3
votes
1answer
1k views
Is zstd for zram actually available in Linux 4.15?
I found zstd in /drivers/block/zram/zcomp.c, but I can't find anything zstd-related in /crypto.
So is zstd for zram actually available in Linux 4.15 or not?
12
votes
3answers
12k views
How to set a non default zstd compression level at btrfs filesystem defragment?
# btrfs filesystem defragment -r -v -czstd:15 /
ERROR: unknown compression type zstd:15
# btrfs filesystem defragment -r -v -czstd_15 /
ERROR: unknown compression type zstd_15
# btrfs filesystem ...
