icemounty - I just lost operating system


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I'm there with you.  My usb flash drive is empty.  I also have my registration key.  

 

My question is do I create a new usb bootable startup drive and then copy it to my config file and then reboot my server.  

 

I have no idea which of my drives are my parity drives and which are storage, and what order they were installed in.

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Found these diagnostics but they are a bit old now:

 

This is how the disks were assigned back then:

 

Sep 10 10:19:40 Tower kernel: md: import disk0: (sdd) WDC_WD80EMAZ-00WJTA0_7SH1NY4C size: 7814026532 
Sep 10 10:19:40 Tower kernel: md: import disk1: (sdg) WDC_WD80EMAZ-00WJTA0_1SG5JX2Z size: 7814026532 
Sep 10 10:19:40 Tower kernel: md: import disk2: (sdh) WDC_WD80EMAZ-00WJTA0_1SG4G6BZ size: 7814026532 
Sep 10 10:19:40 Tower kernel: md: import disk3: (sde) WDC_WD80EFAX-68LHPN0_7SGNLTMC size: 7814026532 
Sep 10 10:19:40 Tower kernel: md: import disk4: (sdf) WDC_WD40EFRX-68N32N0_WD-WCC7K7SCEP1T size: 3907018532 
Sep 10 10:19:40 Tower kernel: md: import disk5: (sdb) WDC_WD80EZAZ-11TDBA0_7SHTPE1W size: 7814026532 
Sep 10 10:19:40 Tower emhttpd: import 30 cache device: (sdc) Samsung_SSD_850_EVO_500GB_S3PTNF0JA03873W

 

Unfortunately, none of those were 10TB, and it looks like that 8TB disk0 (parity) was reused as data based on your latest diagnostics.

 

Since you don't know which disk is parity, assign all HDD to data slots and none to parity slots and start the array. Hopefully, only one disk will be unmountable, and if so, that is the parity disk. After starting the array post new diagnostics.

 

 

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Whatever you preserve will be just a starting point for you to begin changing assignments as needed. Preserve all will be fine, Apply the New Config, and it will take you to the Main page without the array started. Then you make any changes you want before starting the array. When you start the array, it will record those new disk assignments and will build parity on the disk assigned to the parity slot.

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2 minutes ago, icemounty said:

Parity disk(s) content will be overwritten

 

16 minutes ago, trurl said:

will build parity on the disk assigned to the parity slot.

Parity is probably mostly valid so you could check the box. You should do a correcting parity check after though.

 

Or don't check the box, rebuilding parity completely might be slightly faster than a correcting check.

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