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Date:      Wed, 10 Sep 2008 11:27:40 +0100
From:      "Nuno Martinho" <nuno.martinho@mail.pt>
To:        freebsd-geom@freebsd.org
Subject:   GEOM_MIRROR Errors
Message-ID:  <20080910102740.4b1dab5d@www.trote.org>

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=20

I have a RAID 1 that was working fine without errors reported. The RAID =
was not on Degraded state. =20

When i shutdown Freenas, GEOM=5FMIRROR start to report errors during shu=
tdown. =20

I=E2=80=99ve checked SMART and there are no problems with the disks. =20

  =20

During shutdown: =20

Sep 10 07:33:15                kernel: ad6: TIMEOUT - WRITE=5FDMA48 retr=
ying (1 retry left) LBA=3D976773167 =20

Sep 10 07:33:20                kernel: ad6: TIMEOUT - WRITE=5FDMA48 retr=
ying (0 retries left) LBA=3D976773167 =20

Sep 10 07:33:25                kernel: ad6: FAILURE - WRITE=5FDMA48 time=
d out LBA=3D976773167 =20

Sep 10 07:33:25                kernel: GEOM=5FMIRROR: Cannot write metad=
ata on ad6 (device=3Draid1, error=3D5). =20

Sep 10 07:33:25                kernel: GEOM=5FMIRROR: Cannot update meta=
data on disk ad6 (error=3D5). =20

Sep 10 07:33:32                kernel: ad7: TIMEOUT - WRITE=5FDMA48 retr=
ying (1 retry left) LBA=3D976773167 =20

  =20

During startup: =20

Sep 10 07:47:47                kernel: ad6: 476940MB <WDC WD5000AAKB-00Y=
SA0 12.01C02> at ata3-master UDMA100 =20

Sep 10 07:47:47                kernel: ad7: 476940MB <WDC WD5000AAKB-00Y=
SA0 12.01C02> at ata3-slave UDMA100 =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Device raid1 creat=
ed (id=3D3401427605). =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Device raid1: prov=
ider ad7 detected. =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Device raid1: prov=
ider ad6 detected. =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Component ad6 (dev=
ice raid1) broken, skipping. =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Device raid1: prov=
ider ad7 activated. =20

Sep 10 07:47:47                kernel: GEOM=5FMIRROR: Device raid1: prov=
ider mirror/raid1 launched. =20

  =20

If i try to insert disk =E2=80=9Cad6=E2=80=9D in the mirror: =20

Sep 10 07:49:40                kernel: GEOM=5FMIRROR: Component ad6 (dev=
ice raid1) broken, skipping. =20

Sep 10 07:49:40                kernel: GEOM=5FMIRROR: Cannot add disk ad=
6 to raid1 (error=3D22). =20

  =20

The only solution was rebuild the mirror. =20

  =20

Why this errors=3F =20

  =20

  =20

Best Regards, =20

Martinho.



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