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Date:      Wed, 10 Jul 2019 11:24:51 -0400
From:      Allan Jude <allanjude@freebsd.org>
To:        freebsd-hackers@freebsd.org
Subject:   Re: zpool errors
Message-ID:  <27c3e59a-07ea-5df3-9de2-302d5290a477@freebsd.org>
In-Reply-To: <52CE32B1-7E01-4C35-A2AB-84D3D5BD4E2F@cs.huji.ac.il>
References:  <52CE32B1-7E01-4C35-A2AB-84D3D5BD4E2F@cs.huji.ac.il>

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From: Allan Jude <allanjude@freebsd.org>
To: freebsd-hackers@freebsd.org
Message-ID: <27c3e59a-07ea-5df3-9de2-302d5290a477@freebsd.org>
Subject: Re: zpool errors
References: <52CE32B1-7E01-4C35-A2AB-84D3D5BD4E2F@cs.huji.ac.il>
In-Reply-To: <52CE32B1-7E01-4C35-A2AB-84D3D5BD4E2F@cs.huji.ac.il>

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On 2019-07-10 10:48, Daniel Braniss wrote:
> hi,
> i got a degraded pool, but can=E2=80=99t make sense  of the file name:
>=20
> protonew-2# zpool status -vx
>  pool: h
> state: ONLINE
> status: One or more devices has experienced an error resulting in data
>        corruption.  Applications may be affected.
> action: Restore the file in question if possible.  Otherwise restore th=
e
>        entire pool from backup.
>   see: http://illumos.org/msg/ZFS-8000-8A <http://illumos.org/msg/ZFS-8=
000-8A>
>  scan: scrub repaired 6.50K in 17h30m with 0 errors on Wed Jul 10 12:06=
:14 2019
> config:
>=20
>        NAME          STATE     READ WRITE CKSUM
>        h             ONLINE       0     0 14.4M
>          gpt/r5/zfs  ONLINE       0     0 57.5M
>=20
> errors: Permanent errors have been detected in the following files:
>=20
>        <0x102>:<0x30723>
>        <0x102>:<0x30726>
>        <0x102>:<0x3062a>
>  =E2=80=A6
>        <0x281>:<0x0>
>        <0x6aa>:<0x305cd>
>        <0xffffffffffffffff>:<0x305cd>
>=20
>=20
> any hints as how I can identify third files?
>=20
> thanks,
> 	danny
>=20
> _______________________________________________
> freebsd-hackers@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.o=
rg"
>=20

Once a file has been deleted, ZFS can have a hard time determining its
filename.

It is inode 198186 (0x3062a) on dataset 0x102. The file has been
deleted, but still exists in at least one snapshot.

Although, 57 million checksum errors seems like there may be some other
problem. You might look for and resolve the problem with what appears to
be a raid5 you have built your ZFS pool on top of it? Then do 'zpool
clear' to reset the counters to zero, and 'zpool scrub' to try to read
everything again.

--=20
Allan Jude


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