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321610 |
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27-Jul-2017 |
mav |
MFC r320156, r320185, r320186, r320262, r320452, r321111: MFV r318946: 8021 ARC buf data scatter-ization
illumos/illumos-gate@770499e185d15678ccb0be57ebc626ad18d93383 https://github.com/illumos/illumos-gate/commit/770499e185d15678ccb0be57ebc626ad1 8d93383
https://www.illumos.org/issues/8021 The ARC buf data project (known simply as "ABD" since its genesis in the ZoL community) changes the way the ARC allocates `b_pdata` memory from using linea r `void *` buffers to using scatter/gather lists of fixed-size 1KB chunks. This improves ZFS's performance by helping to defragment the address space occupied by the ARC, in particular for cases where compressed ARC is enabled. It could also ease future work to allocate pages directly from `segkpm` for minimal- overhead memory allocations, bypassing the `kmem` subsystem. This is essentially the same change as the one which recently landed in ZFS on Linux, although they made some platform-specific changes while adapting this work to their codebase: 1. Implemented the equivalent of the `segkpm` suggestion for future work mentioned above to bypass issues that they've had with the Linux kernel memory allocator. 2. Changed the internal representation of the ABD's scatter/gather list so it could be used to pass I/O directly into Linux block device drivers. (This feature is not available in the illumos block device interface yet.)
FreeBSD notes: - the actual (default) chunk size is 4KB (despite the text above saying 1KB) - we can try to reimplement ABDs, so that they are not permanently mapped into the KVA unless explicitly requested, especially on platforms with scarce KVA - we can try to use unmapped I/O and avoid intermediate allocation of a linear, virtual memory mapped buffer - we can try to avoid extra data copying by referring to chunks / pages in the original ABD
Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Paul Dagnelie <pcd@delphix.com> Reviewed by: John Kennedy <john.kennedy@delphix.com> Reviewed by: Prakash Surya <prakash.surya@delphix.com> Reviewed by: Prashanth Sreenivasa <pks@delphix.com> Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com> Reviewed by: Chris Williamson <chris.williamson@delphix.com> Approved by: Richard Lowe <richlowe@richlowe.net> Author: Dan Kimmel <dan.kimmel@delphix.com>
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301010 |
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31-May-2016 |
allanjude |
Connect the SHA-512t256 and Skein hashing algorithms to ZFS
Support for the new hashing algorithms in ZFS was introduced in r289422 However it was disconnected because FreeBSD lacked implementations of SHA-512 (truncated to 256 bits), and Skein.
These implementations were introduced in r300921 and r300966 respectively
This commit connects them to ZFS and enabled these new checksum algorithms
This new algorithms are not supported by the boot blocks, so do not use them on your root dataset if you boot from ZFS.
Relnotes: yes Sponsored by: ScaleEngine Inc.
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292782 |
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27-Dec-2015 |
allanjude |
Replace sys/crypto/sha2/sha2.c with lib/libmd/sha512c.c
cperciva's libmd implementation is 5-30% faster
The same was done for SHA256 previously in r263218
cperciva's implementation was lacking SHA-384 which I implemented, validated against OpenSSL and the NIST documentation
Extend sbin/md5 to create sha384(1)
Chase dependancies on sys/crypto/sha2/sha2.{c,h} and replace them with sha512{c.c,.h}
Reviewed by: cperciva, des, delphij Approved by: secteam, bapt (mentor) MFC after: 2 weeks Sponsored by: ScaleEngine Inc. Differential Revision: https://reviews.freebsd.org/D3929
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289422 |
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16-Oct-2015 |
mav |
MFV r289310: 4185 add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R
Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Prakash Surya <prakash.surya@delphix.com> Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com> Reviewed by: Richard Lowe <richlowe@richlowe.net> Approved by: Garrett D'Amore <garrett@damore.org> Author: Matthew Ahrens <mahrens@delphix.com>
illumos/illumos-gate@45818ee124adeaaf947698996b4f4c722afc6d1f
This is only a partial merge of respective ZFS infrastructure changes. At this moment FreeBSD kernel has no those crypto algorithms, so the parts of the code to enable them are commented out. When they are implemented, it will be trivial to plug them in.
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185029 |
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17-Nov-2008 |
pjd |
Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.
This bring huge amount of changes, I'll enumerate only user-visible changes:
- Delegated Administration
Allows regular users to perform ZFS operations, like file system creation, snapshot creation, etc.
- L2ARC
Level 2 cache for ZFS - allows to use additional disks for cache. Huge performance improvements mostly for random read of mostly static content.
- slog
Allow to use additional disks for ZFS Intent Log to speed up operations like fsync(2).
- vfs.zfs.super_owner
Allows regular users to perform privileged operations on files stored on ZFS file systems owned by him. Very careful with this one.
- chflags(2)
Not all the flags are supported. This still needs work.
- ZFSBoot
Support to boot off of ZFS pool. Not finished, AFAIK.
Submitted by: dfr
- Snapshot properties
- New failure modes
Before if write requested failed, system paniced. Now one can select from one of three failure modes: - panic - panic on write error - wait - wait for disk to reappear - continue - serve read requests if possible, block write requests
- Refquota, refreservation properties
Just quota and reservation properties, but don't count space consumed by children file systems, clones and snapshots.
- Sparse volumes
ZVOLs that don't reserve space in the pool.
- External attributes
Compatible with extattr(2).
- NFSv4-ACLs
Not sure about the status, might not be complete yet.
Submitted by: trasz
- Creation-time properties
- Regression tests for zpool(8) command.
Obtained from: OpenSolaris
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