GEOM_RAID3: Device datos is broken, too few valid components
José M. Fandiño
freebsd4 at fadesa.es
Thu Apr 6 19:01:20 UTC 2006
Pawel Jakub Dawidek wrote:
> +> Unfortunately, the metadata structure of my data partition (a geom raid3
> +> array with tree components ) seems to be corrupted by this hard lock,
> +> the following message is scrolled constantly on the screen:
> +> GEOM_RAID3: Device datos created (id=3217021940).
> +> GEOM_RAID3: Device datos: provider ad6s2 detected.
> +> GEOM_RAID3: Device datos: provider ad5s2 detected.
> +> GEOM_RAID3: Device datos: provider ad4s2 detected.
> +> GEOM_RAID3: Component ad6s2 (device datos) broken, skipping.
> +> GEOM_RAID3: Component ad4s2 (device datos) broken, skipping.
> +> GEOM_RAID3: Device datos is broken, too few valid components.
> +> GEOM_RAID3: Device datos destroyed.
> +> Checking the search engine results it isn't a very usual problem, the advice
> +> in the returned hits is rerunning "graid label -h datos ad4s2 ad5s2 ad6s2",
> +> but before of erasing all my data I would like to ask to list members.
> +> How dangerous is running the mentioned command in this context?
> You should be safe as long as the order of slices you give here is the
> same as it was when device was initially labeled.
I don't remember the exact order (my history file is only 2000 lines
long :) however I'm going to duplicate two disks, because they are
the minimum necessary to reconstruct the raid3, and I will do some tests
over them, so I can maintain intact the original disks.
> Of course (as I understand) one of those broken components was really
> broken, right? If yes, you should 'graid3 rebuild' it immediatelly after
> 'label' command. If no, you should still rebuild one of them after
> labeling it.
no, it was a collateral damage.
The initial problem was a faulty disk in the system raid1 blocking the
computer, after the reboot the data raid3 disks show the cited message.
I will try to follow your advice and tell something to the list.
-----BEGIN GEEK CODE BLOCK-----
GCS/IT d- s+:+() a32 C+++ UBL+++$ P+ L+++ E--- W++ N+ o++ K- w---
O+ M+ V- PS+ PE+ Y++ PGP+>+++ t+ 5 X+$ R- tv-- b+++ DI D++>+++
G++ e- h+(++) !r !z
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