Am 2018-04-03 um 20:52 schrieb Austin S. Hemmelgarn: > On 2018-04-03 14:25, Stefan G. Weichinger wrote: >> >> Does anyone already use zstd https://en.wikipedia.org/wiki/Zstandard >> with amanda? >> >> I will try to define an initial dumptype and play around although I >> wonder if the standard behavior leads to any problems. >> >> zstd does not remove the source file after de/compression per default >> (only with "--rm") ... but as it is used within a pipe (?) with amanda I >> assume that won't hurt. >> >> The "-d" for decompression is there so that should work. >> > > I've been using it for a few months now both at home and at work. It > works just fine as-is and gets pretty good performance. > > In both cases though, I actually use a wrapper script. The one for > backups at work just adds `-T2` to the zstd command line as our backup > server has lots of CPU (and CPU time), but the backups are > network-limited. At home, I also bump the compression level as high as > I can without needing special decompression options (so the full command > line at home that the wrapper passes is `-19 --long --zstd=hlog=26 -T2`). > > I've done numerous restores from both sets of backups both with and > without the wrapper script (I initially set both up to just use zstd > directly), and it all appears to work just fine.
great. thanks for the feedback!
