start:dupmdatabtrfs
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| start:dupmdatabtrfs [2022/06/28 19:33] – created peter | start:dupmdatabtrfs [2022/06/28 19:37] – peter | ||
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| mdata should be dup by default so your btrfs filesystem can handle errors more easily. | mdata should be dup by default so your btrfs filesystem can handle errors more easily. | ||
| + | |||
| + | DO NOT RUN THIS ON A DISK WITH VERY LITTLE FREE SPACE. You Need to ensure you have 5X the metadata space to ensure it can be converted without errors, eg: Metadata = 6GB then ensure 30GB is free etc. | ||
| You can check if this is the case for you by using command: | You can check if this is the case for you by using command: | ||
| Line 23: | Line 25: | ||
| GlobalReserve, | GlobalReserve, | ||
| </ | </ | ||
| + | |||
| + | To convert to DUP which duplicates the metadata (information about the files on the disk) run this command: | ||
| + | |||
| + | < | ||
| + | sudo btrfs balance start -mconvert=dup / | ||
| + | </ | ||
| + | |||
| + | In another terminal you can see it progressing: | ||
| + | < | ||
| + | watch sudo btrfs balance status / | ||
| + | </ | ||
| + | |||
| + | Running 'sudo btrfs fi df /' when it completes again will show you that metadata is now DUP. Note that system also shows DUP. | ||
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| + | This should be the default but possible if your system was created some time ago you may not have this. | ||
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start/dupmdatabtrfs.txt · Last modified: 2023/09/14 20:47 by peter
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