Hi all,

I don't know if this is the correct space to ask for help, but ... let's try it.

I'm configuring a new server to have Unraid, a HP ProLiant DL380 Gen9 (with Smart Array P840 Controller).
Currently, I'm having some issues with creating and having an array working.

First think first - I already have the server in HBA mode. Then, I added the disks to the array, and I see two of them with "unmountable: wrong or no filesystem" message.

Was not easy to fix, but running the following commands, I was able to fix it:

sgdisk --zap-all /dev/sdh

dd if=/dev/zero of=/dev/sdh bs=1M count=100

dd if=/dev/zero of=/dev/sdh bs=1M seek=$(($(blockdev --getsz /dev/sdh) / 2048 - 100)) count=100

Image 1 added here proves that the array started with no problems. However, as soon as I start the check of the disks, I have a lot of errors, as image 2 shows (these numbers are just after 10 seconds of having the check running).

Any idea of what I'm missing or kind of problems and solutions that I have?

Thanks in advance.

Edited January 29Jan 29 by jppm89

Attach Diagnostics ZIP to your NEXT post in this thread.

Added diagnostics zip file.

mmserver-diagnostics-20260129-2058.zip

2 hours ago, jppm89 said:

Was not easy to fix, but running the following commands, I was able to fix it:

Did you try formatting them from the webUI?

Disks 5, 6 show no partitions. Are they the ones you fixed?

Yes - i try to use webui to do that. When creating the array, it ask me to format the disks, and I formatted. What happened was that the disk show an error saying "unmountable: wrong or no filesystem". That's why I needed to do it manually.

I just formatted it manually and the disk appeared. I needed to do it for all the disks.

But still have the same problem when reading or writing to the disk with a lot of errors.

Also, btw, to add more information - I tested in a different server, with the exact same configuration (but different disks), and still have the same issue.

Edited January 29Jan 29 by jppm89
fix english

Syslog has these for multiple disks:

Jan 29 20:57:04 MMServer kernel: protection error, dev sdf, sector 210432 op 0x0:(READ) flags 0x0 phys_seg 72 prio class 0
Jan 29 20:57:04 MMServer kernel: md: disk5 read error, sector=210368
Jan 29 20:57:04 MMServer kernel: md: disk5 read error, sector=210376
...
Jan 29 20:57:05 MMServer kernel: protection error, dev sdg, sector 212480 op 0x0:(READ) flags 0x0 phys_seg 72 prio class 0
Jan 29 20:57:05 MMServer kernel: md: disk6 read error, sector=212416
Jan 29 20:57:05 MMServer kernel: md: disk6 read error, sector=212424
...
Jan 29 20:57:05 MMServer kernel: protection error, dev sdj, sector 207104 op 0x0:(READ) flags 0x0 phys_seg 232 prio class 0
Jan 29 20:57:05 MMServer kernel: md: disk4 read error, sector=207040
Jan 29 20:57:05 MMServer kernel: md: disk4 read error, sector=207048
...
Jan 29 20:57:06 MMServer kernel: protection error, dev sde, sector 205568 op 0x0:(READ) flags 0x0 phys_seg 168 prio class 0
Jan 29 20:57:06 MMServer kernel: md: disk3 read error, sector=205504
Jan 29 20:57:06 MMServer kernel: md: disk3 read error, sector=205512
...
Jan 29 20:57:06 MMServer kernel: protection error, dev sdd, sector 206336 op 0x0:(READ) flags 0x0 phys_seg 72 prio class 0
Jan 29 20:57:06 MMServer kernel: md: disk1 read error, sector=206272
Jan 29 20:57:06 MMServer kernel: md: disk1 read error, sector=206280
...
Jan 29 20:57:06 MMServer kernel: md: disk7 read error, sector=206848
Jan 29 20:57:06 MMServer kernel: md: disk7 read error, sector=206856
...

Did you "fix" all of them? Or were you able to format some in the webUI? Or were some already formatted in some other system?

You haven't actually assigned parity so you started a "read check".

I suspect all these problems are here:

3 hours ago, jppm89 said:

Smart Array P840 Controller

So, I will try to explain step by step what I needed to do.

1. Enable HBA mode in server

2. Start to create the array on unraid (adding two disks to the parity)

3. It requested me to format the disk after added them to the array that I created.

4. After formatting, some of the disks were added successfully to the array, but other ones were showing the "unmountable: wrong or no filesystem" message.

5. After many tries, I just restart the array and didn't add any parity disks, but the problem persists.

6. Then, with the array stopped, I ran the commands to fix the disks, as I mentioned before (run it for all the disks).

7. I started the array again, and it asked me to format the disks again.

8. Formatted the disks, and the disks were successfully added to the array

9. When I run the check, I see all these errors (huge number) and the speed is really slow.

Not sure if it's fully clear what I tried to do and all the steps :)

About the Smart Array P840, I tested two - the same problem :(

What do you get from command line with this?

lsblk

During my tests, I recreated the array, so I'm adding here what you requested but also the new diagnostics.zip.

Also, check the image with the disk errors that I described, and the other one with lsblk.

mmserver-diagnostics-20260130-0035.zip

Can you format disks 6,9 using the webUI?

The option appear, I ask unraid to format it but still the same, with the same error in the image.

4 hours ago, jppm89 said:

have the server in HBA mode

Are you sure?

Yes, I have no disks in Logical View, only in Physical View.

Problems seem similar to this thread:

https://forums.unraid.net/topic/95786-drive-issues-with-unraid/

Formatted with type 2 protection

This must be removed:

https://forums.unraid.net/topic/93432-parity-disk-read-errors/?do=findComment&comment=864078

15 hours ago, JorgeB said:

Formatted with type 2 protection

This must be removed:

https://forums.unraid.net/topic/93432-parity-disk-read-errors/?do=findComment&comment=864078

Doing that - thanks JorgeB. I will give feedback as soon as it is finished.

Btw, shouldn't formatting through the UI have removed the protection?

8 hours ago, jppm89 said:

Btw, shouldn't formatting through the UI have removed the protection?

Nope, it requires low-level formatting.

Hi, Quick question:

I have a few SAS drives also with type 2 protection on my array, i dont have any errors, should i be worried ?
Can this cause a slugish system ? On parity checks per example, can this cause the rate to go down ?
Should i reformat to clear the type 2 ? what are the gains ? thanks in advance for the help :)

5 hours ago, maternal-effrontery7688 said:

I have a few SAS drives also with type 2 protection on my array, i dont have any errors, should i be worried ?

I've seen users start to have issues after updating Unraid, unclear why, since it's a very old problem, but that should always be removed.

5 hours ago, maternal-effrontery7688 said:

Can this cause a slugish system ? On parity checks per example, can this cause the rate to go down ?

It should not make changes regarding performance, but the disks may stop working/mounting.

To give feedback on this one.

Looks like it's solved, with the @JorgeB suggestion - format the disks to remove the type 2 protection.

Array is up and running, parity is running now, 0 errors.

Thanks!