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Date:      Fri, 2 Nov 2018 14:32:54 +0100
From:      Mariusz Zaborski <oshogbo@freebsd.org>
To:        Miroslav Lachman <000.fbsd@quip.cz>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: zpool scrub 9TB finishes in ~40 mins
Message-ID:  <20181102133254.GA35599@jarvis>
In-Reply-To: <d073e2c5-38f8-c152-b37a-f7e6e08f520b@quip.cz>
References:  <5BDC3DF5.9020501@andyit.com.au> <d073e2c5-38f8-c152-b37a-f7e6e08f520b@quip.cz>

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Probably because:
https://github.com/zfsonlinux/zfs/pull/6256/commits/1c6275b1fcdacd734bb4eef=
d02a123b6b610ca48

FreeBSD commit - r334844.


On Fri, Nov 02, 2018 at 02:21:28PM +0100, Miroslav Lachman wrote:
> Andy Farkas wrote on 2018/11/02 13:07:
>=20
> > # zpool status z
> >  =A0 pool: z
> >  =A0state: ONLINE
> > status: One or more devices has experienced an error resulting in data
> >  =A0=A0=A0 corruption.=A0 Applications may be affected.
> > action: Restore the file in question if possible.=A0 Otherwise restore =
the
> >  =A0=A0=A0 entire pool from backup.
> >  =A0=A0 see: http://illumos.org/msg/ZFS-8000-8A
> >  =A0 scan: scrub in progress since Fri Nov=A0 2 16:59:24 2018
> >  =A0=A0=A0 365G scanned out of 11.9T at 228M/s, 14h47m to go
> >  =A0=A0=A0=A0=A0=A0=A0 2.47M repaired, 2.99% done
>=20
> I definitely need this speed of scrub! 238M/s is awesome.
> I have RAIDZ from 4x ST4000VN000-1H4168 SC43 and the speed of scrub is=20
> about 20MB/s.
>=20
> Scrub takes more than week to finish:
>=20
>    pool: tank0
>   state: ONLINE
> status: Some supported features are not enabled on the pool. The pool can
>          still be used, but some features are unavailable.
> action: Enable all features using 'zpool upgrade'. Once this is done,
>          the pool may no longer be accessible by software that does not=
=20
> support
>          the features. See zpool-features(7) for details.
>    scan: scrub repaired 0 in 262h56m with 0 errors on Sun Sep 16=20
> 02:04:25 2018
> config:
>=20
>          NAME                STATE     READ WRITE CKSUM
>          tank0               ONLINE       0     0     0
>            raidz1-0          ONLINE       0     0     0
>              gpt/disk0tank0  ONLINE       0     0     0
>              gpt/disk1tank0  ONLINE       0     0     0
>              gpt/disk2tank0  ONLINE       0     0     0
>              gpt/disk3tank0  ONLINE       0     0     0
>=20
> This is on HP ProLiant ML 110 G5 (very old machine) with only 5GB of RAM.
>=20
> Miroslav Lachman
> _______________________________________________
> freebsd-fs@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-fs
> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"

--=20
Mariusz Zaborski
oshogbo//vx		| http://oshogbo.vexillium.org
FreeBSD committer	| https://freebsd.org
Software developer	| http://wheelsystems.com
If it's not broken, let's fix it till it is!!1

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