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OpenZFS 8906 - uts: illumos rootfs should support salted cksum
Porting notes: * As of grub-2.02 these checksums are not supported. However, as pointed out in #6501 there are alternatives such as EFISTUB which work and have no such restriction. A warning was added to the checksum property section of the zfs.8 man page. Authored by: Toomas Soome <tsoome@me.com> Reviewed by: C Fraire <cfraire@me.com> Reviewed by: Robert Mustacchi <rm@joyent.com> Reviewed by: Yuri Pankov <yuripv@yuripv.net> Approved by: Dan McDonald <danmcd@joyent.com> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov> OpenZFS-issue: https://illumos.org/issues/8906 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/7dec52f Closes #6501 Closes #7714
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@ -14,7 +14,7 @@
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.\" CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your
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.\" own identifying information:
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.\" Portions Copyright [yyyy] [name of copyright owner]
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.TH ZPOOL-FEATURES 5 "Aug 27, 2013"
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.TH ZPOOL-FEATURES 5 "Jun 8, 2018"
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.SH NAME
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zpool\-features \- ZFS pool feature descriptions
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.SH DESCRIPTION
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@ -248,8 +248,9 @@ immediately activate the \fBlz4_compress\fR feature on the underlying
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pool using the \fBzfs\fR(1M) command. Also, all newly written metadata
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will be compressed with \fBlz4\fR algorithm. Since this feature is not
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read-only compatible, this operation will render the pool unimportable
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on systems without support for the \fBlz4_compress\fR feature. Booting
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off of \fBlz4\fR-compressed root pools is supported.
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on systems without support for the \fBlz4_compress\fR feature.
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Booting off of \fBlz4\fR-compressed root pools is supported.
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This feature becomes \fBactive\fR as soon as it is enabled and will
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never return to being \fBenabled\fB.
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@ -598,8 +599,7 @@ can turn on the \fBsha512\fR checksum on any dataset using the
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and will return to being \fBenabled\fR once all filesystems that have
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ever had their checksum set to \fBsha512\fR are destroyed.
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Booting off of pools utilizing SHA-512/256 is supported (provided that
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the updated GRUB stage2 module is installed).
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Booting off of pools utilizing SHA-512/256 is supported.
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.RE
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@ -633,9 +633,7 @@ can turn on the \fBskein\fR checksum on any dataset using the
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and will return to being \fBenabled\fR once all filesystems that have
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ever had their checksum set to \fBskein\fR are destroyed.
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Booting off of pools using \fBskein\fR is \fBNOT\fR supported
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-- any attempt to enable \fBskein\fR on a root pool will fail with an
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error.
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Booting off of pools using \fBskein\fR is supported.
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.RE
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@ -675,9 +673,7 @@ can turn on the \fBedonr\fR checksum on any dataset using the
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and will return to being \fBenabled\fR once all filesystems that have
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ever had their checksum set to \fBedonr\fR are destroyed.
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Booting off of pools using \fBedonr\fR is \fBNOT\fR supported
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-- any attempt to enable \fBedonr\fR on a root pool will fail with an
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error.
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Booting off of pools using \fBedonr\fR is supported.
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.RE
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@ -30,7 +30,7 @@
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.\" Copyright 2017 Nexenta Systems, Inc.
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.\" Copyright 2018 Joyent, Inc.
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.\"
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.Dd January 10, 2018
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.Dd July 13, 2018
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.Dt ZFS 8 SMM
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.Os Linux
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.Sh NAME
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@ -1184,15 +1184,14 @@ The
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and
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.Sy edonr
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checksum algorithms require enabling the appropriate features on the pool.
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These algorithms are not supported by GRUB and should not be set on the
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.Sy bootfs
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filesystem when using GRUB to boot the system.
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Please see
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.Xr zpool-features 5
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for more information on these algorithms.
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.Pp
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Changing this property affects only newly-written data.
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.Pp
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Salted checksum algorithms
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.Pq Cm edonr , skein
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are currently not supported for any filesystem on the boot pools.
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.It Xo
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.Sy compression Ns = Ns Sy on Ns | Ns Sy off Ns | Ns Sy gzip Ns | Ns
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.Sy gzip- Ns Em N Ns | Ns Sy lz4 Ns | Ns Sy lzjb Ns | Ns Sy zle
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@ -4130,16 +4130,7 @@ zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
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if ((err = spa_open(dsname, &spa, FTAG)) != 0)
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return (err);
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/*
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* Salted checksums are not supported on root pools.
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*/
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if (spa_bootfs(spa) != 0 &&
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intval < ZIO_CHECKSUM_FUNCTIONS &&
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(zio_checksum_table[intval].ci_flags &
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ZCHECKSUM_FLAG_SALTED)) {
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spa_close(spa, FTAG);
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return (SET_ERROR(ERANGE));
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}
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if (!spa_feature_is_enabled(spa, feature)) {
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spa_close(spa, FTAG);
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return (SET_ERROR(ENOTSUP));
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