# strace df -h / execve("/bin/df",, 0x7ffd1af0a5c0 /* 22 vars */) = 0 brk(NULL) = 0x5640c163f000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3 fstat(3, ) = 0 write(1, "Filesystem Si"., 63Filesystem Size Used Avail Use% Mounted on ) = 63 write(1, "rpool/data/subvol-999-disk-0 1"., 54rpool/data/subvol-999-disk-0 16G 3. On disk, ZFS DVA offsets are stored as (512-byte) blocks, but tools like zdb. As a side note, Linux kernel 5.17 will be a long-term support version, and it will be removing the ReiserFS file system. See section 2.1.) Update: This turns out to be wrong (or a misunderstanding). OpenZFS 2.1.3 also brings compatibility fixes for Linux kernel 5.17, which will be released in March 2022. See OpenZFS Developer Summit 2021 for presentations and information about last years (virtual) conference. The previous version of OpenZFS supports only up to Linux kernel 5.15. Full redundancy can be restored to the pool in a fraction of the time normally required to do a full disk replacement. dRAID provides integrated distributed hot spares designed for faster resilvering. OpenZFS 2.1.3 supports Linux kernel versions from 3.10 to 5.16. Distributed Spare RAID (dRAID): This new variant of raidz is the OpenZFS 2.1’s biggest new feature. The new version of the OpenZFS implementation brings many bug fixes related to Linux compatibility, $KERNEL_ environment variables, pushover notifications support for Zed functions, and many more. I am right now sending a copy of a part of my backup pool, lets call it pool2 to my 'normal' pool, which we can call pool1. The new version of OpenZFS supports up to kernel 5.16 but brings some compatibility fixes for 5.17 as well Optimized prefetch for parallel workloads. OpenZFS project is a fork of the original ZFS, and it is an open-source solution being developed by Matthew Ahrens. ZFS 2.1.0 for Ubuntu 18.04 and 20.04 Improved performance for interactive I/O. The OpenZFS project is ongoing after Oracle acquired SunMicrosystems, the Zettabyte File System developer, in 2010.
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