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Date:      Sun, 16 Oct 2016 12:48:17 -0700
From:      Ngie Cooper <yaneurabeya@gmail.com>
To:        Alexander Motin <mav@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r307397 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
Message-ID:  <F749663D-5050-4F55-B419-FCD26B5A14D4@gmail.com>
In-Reply-To: <201610161849.u9GInFiY016740@repo.freebsd.org>
References:  <201610161849.u9GInFiY016740@repo.freebsd.org>

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> On Oct 16, 2016, at 11:49, Alexander Motin <mav@FreeBSD.org> wrote:
>=20
> Author: mav
> Date: Sun Oct 16 18:49:15 2016
> New Revision: 307397
> URL: https://svnweb.freebsd.org/changeset/base/307397
>=20
> Log:
>  Add vfs.zfs.zil_log_limit sysctl.
>=20
>  It is at least partially broken now, but that is another question.

How is it broken?
> Modified:
>  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
>=20
> Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
> --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c    Sun Oct 1=
6 18:27:41 2016    (r307396)
> +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c    Sun Oct 1=
6 18:49:15 2016    (r307397)
> @@ -924,6 +924,8 @@ uint64_t zil_block_buckets[] =3D {
>  * Limit checking is disabled by setting zil_slog_limit to UINT64_MAX.
>  */
> uint64_t zil_slog_limit =3D 1024 * 1024;
> +SYSCTL_QUAD(_vfs_zfs, OID_AUTO, zil_slog_limit, CTLFLAG_RWTUN,
> +    &zil_slog_limit, 0, "Maximal commit size to use SLOG");
> #define    USE_SLOG(zilog) (((zilog)->zl_logbias =3D=3D ZFS_LOGBIAS_LATENC=
Y) && \
>    (((zilog)->zl_cur_used < zil_slog_limit) || \
>    ((zilog)->zl_itx_list_sz < (zil_slog_limit << 1))))
>=20



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