Raid5 unable to mount array disk after replacing a faulty disk in RAID5 array
Hi,
I have a RAID5 array with 4 disks - this array was in a clean degraded status, as one of the disk was faulty and automatically removed from the array. I have purchased a new HDD and then I have added this new disk through webmin administration tool in order to replace the faulty disk sda7 with the new disk sde6. I have monitored the recovery process through cat/post/mdstat and the whole process took over 6 hours. A the end of the process I switched off my NAS Server (DYI running under Ubuntu 22.04). Since then, I need to comment the mount point in fstab, as it is impossible to mount the array, each time I got the following error:: Code:
manu29chatel@NAS:/home/deneufchatel_family$ sudo mount /dev/md127 /export/media3 Here is the detail of the array /dev/md127 Code:
manu29chatel@NAS:/home/deneufchatel_family$ sudo mdadm -D /dev/md127 Is there a way to mount the array (/dev/md127) and to be able to recover / access the data on the array ? Thanking you in advance for your support. Regards, Zoobie78 |
md think that array is clean, so whatever happened to it has happened and presents interest only from the 'learning from your own mistakes' POV. What we have now is the filesystem that won't mount, you can forget about it being on a RAID and deal with it using the corrupted filesystem scenario - testdisk and such. Though I won't hold too many hopes - RAID issues usually thrash filesystems thoroughly and for good.
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Have you tried specifying a filesystem type with the mount command?
mount -t ext4 /dev/md127 /export/media3 (replace ext4 with the actual filesystem type if different) |
Quote:
What does this return Code:
sudo file -s /dev/md127 |
Hi sorry for the late feedback, I was on a business strip
I have been able to go back to a previous state by removing the newly added disk (sde6) from the array, with the set faulty and remove command. I have been able to remount the array that is now under clean degraded status. I'm currently backing up all the data stored on the array partition I'm under the impression that all these issues are related to the new disk. This new disk is a 8TB disk with advanced format (with physical and logical sector of 4096 ilo 512/12 and 512/4096 for the other disks included in the array. It seems that generates the following side effect:
Are there tutorials or documentation on: 1- How to align the single partitions captured in the array 2- How to build an array with a mixture of HDD with standard format and HDD with advanced format I really believe that this is related to the new disk as I had a similar issue on another array on the same machine by replacing the disk partition from sda disk to sde disk |
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