Please do not change default of compression. I have compression enabled on most of my datasets, but it really should not be default. This can break existings assumptions and scripts (for example from solaris or freebsd). Much better would be change debian-installer to create dataset with compression as an option. Also things like copies=2 can be added to debian-installer, as it can be very usefull for system data, especially if we are installing on single disk (i.e. laptop). But nobody is suggesting makeing copies=2 a default for zfs create. If people will want to enable compression they will enabled it, when they find it beneficial. If there are anyone making compression=on a default, i would only think as upstream to make this decision after extremly extensive testing as it needs lots of knowledge to state that it do not introduce considerable regressions. Just my $.02 -- Witold Baryluk
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