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doc: Improve docs/en/faq.md

Make some improvements to the tail end of docs/en/faq.md.

Signed-off-by: Anthony D'Atri [email protected]

Signed-off-by: Anthony D'Atri <[email protected]>
docs/en/faq.md Outdated
### How to copy a large number of small files into JuiceFS quickly?

You could mount JuiceFS with [`--writeback` option](reference/command_reference.mdx#mount-data-cache-options), which will write the small files into local disks first, then upload them to object storage in background, this could speedup coping many small files into JuiceFS.
Mount JuiceFS with the [`--writeback` option](reference/command_reference.mdx#mount-data-cache-options),
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I know this is manual text wrapping, but since there's no similar wrapping in this repository, maybe merge these 3 lines into 1?

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@anthonyeleven anthonyeleven Nov 24, 2025

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If that's how you roll, sure. I contribute heavily to Ceph docs; this is my first time here.

I see someone else pushed a commit doing so. I would have done that myself; now I'm at a loss of how to proceed, as I've never had good luck with PRs with multiple committers.

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@anthonyeleven Thanks for your contribution. :-)

docs/en/faq.md Outdated
### How to copy a large number of small files into JuiceFS quickly?

You could mount JuiceFS with [`--writeback` option](reference/command_reference.mdx#mount-data-cache-options), which will write the small files into local disks first, then upload them to object storage in background, this could speedup coping many small files into JuiceFS.
Mount JuiceFS with the [`--writeback` option](reference/command_reference.mdx#mount-data-cache-options),
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@timfeirg PTAL

### Why does a user on host X have permission to access a file in JuiceFS, but does not on host Y?

The same user has different UID or GID on host X and host Y. Use `id` command to show the UID and GID:
Most likely the user has a different numeric UID or GID on the two hosts. Use the `id` command on each host to show each symbolic and numeric UID and GID:
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@timfeirg PTAL

@CaitinChen CaitinChen merged commit 7d59eac into juicedata:main Nov 24, 2025
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3 participants