Upgrading hard drives.. Advice needed. New build vs replace


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Had to review the thread a little

On 7/29/2022 at 5:41 PM, trurl said:

Missing/emulated disk8 is mounted as XFS and has 1.3T data

On 7/29/2022 at 5:52 PM, trurl said:

Disk2 has 6 reallocated and 14 pending. Could be worse I guess.

 

You can see how much of each disk is used by each user share by clicking Compute... on the User Shares page, or Compute All button at bottom.

On 7/29/2022 at 5:52 PM, trurl said:

prioritize backups of anything important and irreplaceable before anything else

Can you copy that data to somewhere off the array?

 

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Current parity looks OK so parity copy part of the parity swap should be fine.

 

The reason I am asking about backups is because I am concerned disk2 might be a problem while rebuilding disk8 to the (will be) former parity disk.

 

Disk2 is currently involved in emulating disk8 anyway whether used for copying emulated disk8 data or for disk8 rebuild, but might not be involved as much for just copying the data from emulated disk8 as it would be emulating the full disk8 for a rebuild.

  

On 7/29/2022 at 5:52 PM, trurl said:

You can see how much of each disk is used by each user share by clicking Compute... on the User Shares page, or Compute All button at bottom

 

Here is what I see for your shares in your anonymized diagnostics, but it doesn't really tell me the full name of the shares or how much is on each disk for each share.

Spoiler
4-------s                         shareUseCache="no"      Exists on disk6, disk8, disk9
B--------------d                  shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7
C--------s                        shareUseCache="no"      Exists on disk3
d--a                              shareUseCache="no"      Exists on disk5
D------------------m              shareUseCache="no"      Exists on disk2, disk5, disk6, disk9
G-----------h                     shareUseCache="no"      Exists on disk1, disk2, disk3
H---------------h                 shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7, disk8, disk9
H-------------i                   shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7, disk8, disk9
H-----------------m               shareUseCache="no"      Exists on disk2, disk5, disk6, disk7, disk8, disk9
H--------------u                  shareUseCache="no"      Exists on disk4, disk5, disk6, disk8
H------c                          shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk7, disk9
K---------s                       shareUseCache="no"      Exists on disk5
l--------d                        shareUseCache="no"      Exists on disk4
M----------l                      shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7, disk8, disk9
M---------l                       shareUseCache="no"      Exists on disk2, disk3, disk4
M---------------d                 shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk8, disk9
P----s                            shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk7, disk9
R----------s                      shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7, disk8
R----s                            shareUseCache="no"      Exists on disk2, disk3, disk4
S------e                          shareUseCache="no"      Exists on disk1, disk2, disk3, disk4
T---------------s                 shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk7
T------s                          shareUseCache="no"      Exists on disk1, disk2, disk3, disk4, disk5, disk6, disk7, disk8, disk9
V---------s                       shareUseCache="no"      Exists on disk4

 

 

 

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It has to read all the other disks to emulate the missing disk from the parity calculation, any problem reading all the other disks can cause problems with the emulation. The emulated data is what is being copied, and what would be rebuilt during parity swap.

 

Where are you copying the data to?

 

SMART report for disk2 seems to be getting worse.

 

How much left to be copied?

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Am using one of the 12TBs(formatted as NTFS and added to a Windows PC) that I have and moving the data over the network. Another 120 GB pending to be copied across for disk 8 which is emulated and another 2TB of disk2 to be backed up.

 

Thought of completing the emulated drive, do a parity swap and then replace the data drive disk 2. Now I think I need to backup the disk 2 before doing a parity swap. Correct me if I am wrong

 

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Will take the disk 2 backup. After the parity swap and rebuilding Disk8, while replacing the disk 2, I would like it to be in XFS how do I get it. According to the wiki, it will again be reiserfs. Eventually, would like every drive moved to xfs 

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Parity doesn't know anything about filesystems, it is all just bits, a good rebuild can only result in those same bits, which represent that same filesystem and its files.

 

You have to copy the data from reiserfs disks so you can reformat them as XFS

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Posted (edited)

Thanks much. Have the following to-dos.
1. Move the data from newly added 4TB on to other disks using Unbalance plugin and convert the filesystem to xfs
2. Copy over the data/ backups available in the temporary 12TB drive that I had off the array and move it to unRAID
3. Use shrink-array to consolidate few disks
4. Convert the rest to XFS
4. Use one of the left over 2TBs after the consolidation as a cache disk..

Will keep posted on the progress. Thanks all along for getting my array back on shape

Edited by sabarirjpm
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