> > For anecdotal experience regarding root pool compression, the issue was there > with older GRUB loader of OpenSolaris and contemporary Solaris 10; I believe > it was fixed in the illumos branch after the fork (can't find and point to a > commit now, possibly soon after lz4 introduction; no idea about state of > later Solaris releases). > > The problem manifested by GRUB refusing to read datasets (rpool, rpool/ROOT, > rpool/ROOT/$BENAME) that had the compression enabled (even if no blocks were > in fact compressed) or disabled at the moment but compressed blocks > encountered during a read. > > This was one of main reasons early on for my split-root support scripts, so > /usr could be separated into a gzip-9'ed dataset and shrink from ~3gb to ~1gb > on a default install. > > On my current laptop I see rpool has compression=off, rpool/ROOT has lz4 and > rootfs(es) inherit that. Works well WRT stability and performance.
it is known issue with compression=on on rpool, but it is know working scenario for compression=on rpool/ROOT as dataset with root fs - it is working fine on Intel and SPARC it is why i tried to explain to: do not use compression=on on pool itself , but use it on dataset where root file system available = rpool/ROOT and inherit to BE in rpool/ROOT/*. but my English is not good in this context. -Igor > > Hope this helps, > Jim > > -- > Typos courtesy of K-9 Mail on my Android > > ------------------------------------------ > openzfs: openzfs-developer > Permalink: > https://openzfs.topicbox.com/groups/developer/Td7b3a91ecbeec509-M4044865edd7f8b2e0eac8460 > > <https://openzfs.topicbox.com/groups/developer/Td7b3a91ecbeec509-M4044865edd7f8b2e0eac8460> > Delivery options: https://openzfs.topicbox.com/groups/developer/subscription > <https://openzfs.topicbox.com/groups/developer/subscription> ------------------------------------------ openzfs: openzfs-developer Permalink: https://openzfs.topicbox.com/groups/developer/Td7b3a91ecbeec509-Mf1afc03ec1a34d8c6d031a0f Delivery options: https://openzfs.topicbox.com/groups/developer/subscription
