September 29, 20232 yr I have 3 14tb drives used to create an array. There was a power outage recently and now upon booting I see one disk is marked "Unmountable: Unsupported partition layout". Regarding the array health: Since this disk was originally part of the array shouldn't I expect to see an error somewhere? All of my data appears to still be available - since this drive was added the the array last is it possible it's unused? Parity check ran without issue (09-28-2023). Regarding the disk itself: Ran SMART short test which returned no errors (will update once extended test completes). Any suggestions for how to diagnose what has happened to it?
September 30, 20232 yr Community Expert Unsupported partition layout means the MBR was changed/damaged, if parity is valid you should be able to recover the data by rebuilding the disk, since Unraid will recreate the correct partition layout, to test you can unassign that disk, start the array and post the diagnostics.
October 2, 20232 yr Author On 9/30/2023 at 3:51 AM, JorgeB said: Unsupported partition layout means the MBR was changed/damaged, if parity is valid you should be able to recover the data by rebuilding the disk, since Unraid will recreate the correct partition layout, to test you can unassign that disk, start the array and post the diagnostics. Thanks! Diagnostics attached. If the array starts what might you look for in the diagnostics? If all good I presumably format the disk and then add it to the array? tower-diagnostics-20231002-1924.zip
October 3, 20232 yr Community Expert There's no valid filesystem on that disk, are you sure that disk was ever formatted? Post the output of fdisk -l /dev/sde
October 3, 20232 yr Author 5 hours ago, JorgeB said: There's no valid filesystem on that disk, are you sure that disk was ever formatted? Post the output of fdisk -l /dev/sde Disk /dev/sde: 12.73 TiB, 14000519643136 bytes, 27344764928 sectors Disk model: WDC WUH721414AL Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: 92E64CB8-68D7-4F49-AB0E-DD5BECDB2C2C Device Start End Sectors Size Type /dev/sde1 2048 27344746495 27344744448 12.7T Solaris /usr & Apple ZFS /dev/sde9 27344746496 27344762879 16384 8M Solaris reserved 1
October 3, 20232 yr Community Expert That disk was never formatted in the array, there's no Unraid data there.
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