Wrote to one disk of raid array, files truncated, trying to recover data, arch linux

I’m trying to recover some data from a corrupt RAID1 pair and wanted some advice before I make matters worse.

This is how I caused the problem: I wanted to save some data prior to reinstalling my OS. I found an old computer with two magnetic disks in, both of which I inserted into the main computer and typed lsblk, which said something like, IIRC:

sda           8:0    0   1.8T  0 disk 
├─sda1        8:1    0  59.6G  0 part 
└─sda2        8:2    0   1.8T  0 part 
  └─md127     ???    ?   1.8T  ? ????
sdb           8:0    0   1.8T  0 disk 
├─sdb1        8:1    0  59.6G  0 part 
└─sdb2        8:2    0   1.8T  0 part 
nvme0n1     259:0    0 931.5G  0 disk 
├─nvme0n1p1 259:1    0   300M  0 part 
├─nvme0n1p2 259:2    0 896.8G  0 part /
└─nvme0n1p3 259:3    0  34.4G  0 part (SWAP)
  

where the nvm is the main disk. I can’t remember with certainty which of the two disks had the md127 on, but I think it was sda. mdadm was not installed at this time. (At least, not to my knowledge – it was a Manjaro box.) I found I could mount md127 and saved my precious data to it in a few tarballs. Then I wiped the main disk and reinstalled. At some point I installed mdadm in the new OS and mounted the RAID1 pair. I then found that the tarballs I’d saved were truncated.

How should I proceed to recover the rest of the tarballs?

I wonder if a simple fsck would do the trick, but I’m nervous to bang around at random.

ddrescue wouldn’t be much help cos I don’t have another 2TB disk in the house, and I’m not sure which, if either, of the magnetic disks still have useful data on.

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Ultra320 SCSI RAID card can this do tape drives

I have the following SCSI card:

Adaptec ASR-2200S 64-bit/66MHz Ultra320 SCSI RAID controller

http://www.scsi4me.com/adaptec-asr-2200s-64-bit-66mhz-ultra320-scsi-raid-controller.html

It talks about all the raid modes and whatnot, Number of devices
Up to 30 SCSI devices (15 per channel)

However it does not states if this card can only do HDDs or can be other SCSI devices attached to it.

I tried to attach a Tandberg MLR1 SCSI tape device, it has the same adapter but it does not see it and the CPU on the card heats up.

raid5 – Is there a way to view the progress of a RAID 5 rebuild on a G Technology G-Speed Q?

I’ve got a G Technology G-Speed Q configured in RAID 5 fitted with 4x 2TB 7200RPM drives. The top drive started flashing amber and the red light at the bottom also started flashing. I got a new 2TB 7200RPM drive fitted it, started up the drive and found that it no longer showed up via Firewire 800, nor USB2.0. The replaced drive bay was still flashing amber and red light at the bottom still flashed and I left it for 24 hours to rebuild the array.

After 24 hours the array had not rebuilt itself and the drive in question’s amber light was still flashing and the red light at the bottom still flashing.

I replaced the previous drive and was able to access data on the drive again then followed the directions as per the used manual below and hot swapped the drive in question while the unit was powered on as per the steps form the manual below:

Follow the steps below to identify and replace a failed drive.

  1. With the unit powered up, locate the malfunctioning drive by visually inspecting the drive modules. If an amber LED is lit for a
    drive, that drive has failed.
  2. Remove the failed drive by inserting the provided key into the lock hole, and gently sliding the drive module out of the enclo- sure. Be
    careful about which drive you pull out. REMOVING THE WRONG DRIVE WILL
    RESULT IN THE LOSS OF THE ARRAY AND ALL OF ITS CONTENT.
  3. Replace the failed drive with a new disk module. Secure it in place by pushing in the drive and latching the handle.
  4. If G-SPEED Q was setup in RAID 5 mode, the unit will begin rebuilding data on the drive. During this process, all drive LEDs will
    indicate data access. The rebuild time is approximately 2 hours per
    TB.
  5. Once the rebuild is complete, G-SPEED Q is back to normal and protecting your valu- able data once again.

I’ve given the drive another 8x hours to rebuild and still no change — I can access the files on the drive but it’s very slow (as one would expect during a rebuild).

The configurator utility (when attached via USB2.0) does not find the drive but strangely all the drive bay lights return to their normal blue colour while the red warning light at the bottom still flashes red. Killing the program and we’re back to the affected drive bay flashing amber with the new drive in it like before.

Is there some other software I could try that might give me more insight into what’s happening with this drive so see if it is actually trying to rebuild the array and how far it is?

tripleo – Openstack Ussuri introspection image missing raid drivers for mptsas

I have a very ancient hardware with a MPTSAS controller. I use this for TripleO deployment testing. With the release of Ussuri which is running CentOS8, I can no longer provision my overcloud nodes as the MPTSAS driver has been removed in CentOS8:

Centos8 and Removal mpt2sas (Dell SAS drivers) from CentOS

Is there a way to modify the introspection image to include the driver? I found some documentation how to customize the overcloud-full.qcow2 image but very basic stuff like changing the root password. Any help would be highly appreciated.

Best Regards,
Oliver

Windows 10 Install didn’t install drivers for the RAID array in the recovery partition

When I installed Window 10 on this computer I had to install drivers for the AMD RAID Array that Windows was being installed on. Windows 10 created the partitions on the drive as follows:

  1. Partition 0: Recovery | 529 MB Hidden Partition | NTFS
  2. Partition 1: EFI System Partition | 100 MB Hidden Partition
  3. Partition 2: System Disk Mounted as C: | 930 GB Mounted Partition | NTFS

The “Storage Unit” is an 1 TB AMD Raid 1 Array on a Gigabit B450M Gaming Motherboard.

The issue is when I boot into the Recovery Partition, Partition 2 is not found. This means that Windows 10 didn’t install the basic AMD RAID Drivers that was loaded at install time into the Recovery Partition. What this basically means that the 529 MB Recovery Partition is useless. No one at Microsoft has been able to help.

How do I make the Recovery Partition see the AMD RAID 1 Array?

Than you in advance,

George

Can I Move RAID-1 (Mirrored) Hard Drives From a Hardware Raid Controller to Software Raid?

Linux Software RAID (md) has a support for some of hardware RAIDs superblocks, man mdadm:

-e ddf    Use  the  "Industry Standard" DDF (Disk Data Format) format defined by SNIA.

If 3ware’s metadata format is not supported when you plug the disks into usual SATA ports all data they have should be accessible to the system.

Since it’s RAID-1 you aren’t at a huge risk when trying but the real safe side is having backups first anyways.

Virtualizor on RAID 0

Hi, I need a little help from you if you want, so I have a dedicated server with 2x NVMe 512GB and I use them in RAID 0 and I want to instal… | Read the rest of https://www.webhostingtalk.com/showthread.php?t=1819359&goto=newpost

Multiple RAID volume on the same external HDD enclosure

Was thinking getting a 5-bay external HDD closure with RAID controller:
http://www.orico.cc/us/product/detail/3623.html
http://www.orico.cc/us/product/detail/6774.html

Both of these (and many more on the market) are using the JMB394 controller chip:
https://www.jmicron.com/products/list/4

I tried search quite a lot but to no avail, so here is my question:

Can I create multiple RAID volumes on the same controller?
For example if the closure is 5-bay I would like to have 3x3TB to form a RAID-5 volume and 2x1TB to form a RAID-0 volume. Then plug this in to my NAS to see two “logical” disks?

Thanks.