ZFS, which stands for Zettabyte File System, is a combined file system and logical volume manager designed by Sun Microsystems.

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ZFS under Linux, does it work?

Could I get ZFS to work properly in Linux? Are there any caveats / limitations?
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Why does creating a ZPool result in this error?

When I try to create a ZPool, the following error occurs: user@arch ~ % sudo zpool create -f -o ashift=12 -m /data media raidz /dev/disk/by-id/ata-ST2000DM001-1CH164_Z2F0TL8V ...
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Caching write changes on SSD to avoid HDD spin-up? ZFS, but (probably) not L2ARC

I have a home server, which - between other things - stores my documents, mail archives etc.. It uses a ZFS RAIDZ, based on spinning hdds. The server also runs an off-line IMAP service, synchronizing ...