Preparing to do Reiserfs to XFS conversion on some drives. Running 6.9.2 PRO version. 4TB parity, all assigned data drives 2TB – 5 reiserfs, 3 xfs (2 of these are empty), 2 – 3TB drives precleared/unassigned. Question using the 'Mirroring procedure' https://wiki.unraid.net/index.php/File_System_Conversion , If using an empty 2TB disk as the swap disc, which is already assigned and formatted xfs, can/should I still do step 4 settings/global shares settings/excluded disks" with the array stopped? An additional confusion point is the "NOTE" above the procedure which says "Note: the swap drive should not be formatted with XFS (the resultant file system); if it is, then you will need to clear it or format it to something else first" Any clarification will be appreciated.

The only problem that I see is that if both drives are a part of the Global Share Setting (Step 4 of the instructions), then there will be two copies of the files (Source disk and target disk) copied on the array until the source disk is reformatted. This should not cause any problem unless someone is doing any type of file operation (except for strict read operation) on those files. I think that is why the Author had the conversion disk outside of the Shares. (To be honest, as I recall, back in about 2018 when I did the conversion, I had the server totally offline at the time so that nothing could possibility access a file via SMB or NFS share. If this is done, there should not be a problem...) One more thing. While it may seem obvious, the ordering of the copy operation should start with the largest disk and work toward the smallest disk. PS---- I almost forgot, Unraid is now (apparently) defaiulting to a version of the XFS formatting that uses a lot more disk space for the storage of the file system than reiserfs. This could present a problem if the source disk is virtually full and the target disk has the same capacity as the source disk. (However, this XFS version provides for better recovery of data in cases of disk corruption.)

Reiserfs to XFS conversion (Solved)

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September 27, 20223 yr

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A quick check; 'mirroring process' calls for rsync -rcvPX /mnt/disk10/ /mnt/disk11/ as a checksum command, but you are suggesting -narcv what is the difference? Since I don't know rsync from a hole in the ground.

May skip it in any event due to it probably taking a long time to run, no possibility of background writing since I'm converting in SAFE mode, and would like to get to the last disk for conversion.

Thank You.

Edited September 27, 20223 yr by marlin
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September 29, 20223 yr

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Happy to report conversion of data drives complete. Couple of notes for future converters, it takes forever so do it sooner than later.

Step 11/swap; I went through and manually set each disk file type from auto just to make sure everything ran correctly.

Step 15; if you set format type of both drives to XPS here you don't have to stop/start array again. Of course you need to be confident everything went correctly.

I still want to convert single cache drive from btrfs to xfs. Set up notifications. Check function of UPS.

Thanks all for the help with the conversion.

tower-diagnostics-20220928-1150.zip

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3 yr3 yr marlin changed the title to Reiserfs to XFS conversion (Solved)

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