Problem replacing a bad drive with a new one in the same position

[benamira]

Hi,
I have a problem trying to replace a hard drive that shows a SMART error with a new one in the same position.
Here you have the pictures of the config before replacing.




Here is the output from the cli: zpool status NFS

pool: NFS
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scrub: scrub completed after 9h9m with 0 errors on Tue Dec 13 12:10:50 2011
config:

NAME STATE READ WRITE CKSUM
NFS DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
gptid/127a73df-f4eb-11e0-a31f-f46d0473b996 UNAVAIL 3 1.15M 17 cannot open
gptid/132699fa-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/13dddd61-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/148d9aa8-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/153d15cd-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/15f92898-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0

It seems no data loss and raidz1 is working as expected, but when trying to replace the issues come in.
I shutdown the system, pull out the bad drive, and then insert in the same position the new one (same manufacturer, same size) because i dont have more ports available.
My guess was that i would be able to rebuild the volume with the new drive, but it seems it detects the new drive inside the Volume again, and each old drive takes a new name like: the current ada 1 becomes ada0, ada2 becomes ada 1 and so on.
I am not sure to do a "zpool replace NFS ada0" because ada0 now is one of the good drives, so i will miss data, wont i?

Any ideas about the procedure to follow to replace this drive??

Thanks a lot

 

[benamira]

To give you more info. Of course i does not work gointg through the GUI because no option to Replace "IN PLACE". It asks for a member that does not exists...

After replacing the drive with the new one this is what i obatined after a zpool status:


pool: NFS
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scrub: none requested
config:

NAME STATE READ WRITE CKSUM
NFS DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
3482949819918333012 UNAVAIL 0 0 0 was /dev/gptid/127a73df-f4eb-11e0-a31f-f46d0473b996
gptid/132699fa-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/13dddd61-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/148d9aa8-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/153d15cd-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/15f92898-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0

Any suggestions??

 

[William Grzybowski]

What if you go to Views Disks, click in Replace for the one that shows serial Unknown and select "ada0", wont that fix it?

 

[benamira]

:-( i'm afraid i cant.
No option available.
If i click Replace i obtained a pop-up "Disk Replacement"
Replacing Disk None
Member Disk has no options in the drop-down menu.
I only can click in Replace Disk, but it says Member disk : This field is required.

So i thought to do in the CLI, but the problem is now if i see the drives the old ada1 is now ada0. See picture:



so i dont know if it is a good idea to do: "zpool replace NFS ada0", do u know what i mean??
Also the new drive "seems" to have the same uuid as the old one.
I am really confused and worried about a possible data loss if another drive fails before rebuildind the raidz1.

Thanks for your support.

 

[William Grzybowski]

Ok, paste the output of "glabel status" and "sysctl kern.disks"

I think the system is not detecting the new drive

 

[benamira]

Ok, paste the output of "glabel status"

Name Status Components
ufs/FreeNASs3 N/A da0s3
ufs/FreeNASs4 N/A da0s4
ufs/FreeNASs1a N/A da0s1a
gptid/132699fa-f4eb-11e0-a31f-f46d0473b996 N/A ada0p2
gptid/13dddd61-f4eb-11e0-a31f-f46d0473b996 N/A ada1p2
gptid/148d9aa8-f4eb-11e0-a31f-f46d0473b996 N/A ada2p2
gptid/153d15cd-f4eb-11e0-a31f-f46d0473b996 N/A ada3p2
gptid/15f92898-f4eb-11e0-a31f-f46d0473b996 N/A ada4p2

and "sysctl kern.disks"

kern.disks: ada4 ada3 ada2 ada1 ada0 da0

I think the system is not detecting the new drive

It seems you are right, what can i do??

thanks again...

 

[William Grzybowski]

I don't know, did you take a look at the cables? are you sure the disk is spinning? reboot the machine? tested on another hardware? any weird messages on dmesg?

 

[benamira]

Ok, just to update with the last info:
The "new" drive was also broken (bad luck), so i replaced again with a new one and now everithing is working as expected:


zpool status -v


pool: NFS
state: DEGRADED
status: One or more devices is currently being resilvered. The pool will
continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
scrub: resilver in progress for 1h53m, 21.32% done, 6h57m to go
config:

NAME STATE READ WRITE CKSUM
NFS DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
replacing DEGRADED 0 0 0
3482949819918333012 UNAVAIL 0 0 0 was /dev/gptid/127a73df-f4eb-11e0-a31f-f46d0473b996
ada0p2 ONLINE 0 0 0 280G resilvered
gptid/132699fa-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/13dddd61-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/148d9aa8-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/153d15cd-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0
gptid/15f92898-f4eb-11e0-a31f-f46d0473b996 ONLINE 0 0 0

errors: No known data errors


So when it finish, do i have to do anything else like detach the old drive or reboot or....

 

[peterh]

how about "camcontrol rescan all"
( use manpages at freebsd.org for details)

( this was added before user reported that a fresh drive solved the problem
camcontrol is included and working in freenas and might help solve problems
like these)

 

[William Grzybowski]

You may need to use the "Detach" button the View Disks when it is finished..

Cheers

 

[benamira]

Yes, i see it.
I am very confident it is going to work now, and my data is safe again.
Thank you very much for your help.