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Groups > linux.debian.user > #244641
| From | piorunz <piorunz@gmx.com> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Btrfs best practices: defrag? |
| Date | 2022-01-26 21:40 +0100 |
| Message-ID | <DJXfc-6gi-7@gated-at.bofh.it> (permalink) |
| References | <Dv2A9-6R3-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
I'd like to add question to this topic. Is it safe & recommended to run autodefrag mount option in fstab? I am considering two machines here, normal desktop which has Btrfs as /home, and server with VM and other databases also btrfs /home. Both Btrfs RAID10 types. Both are heavily fragmented. I never defragmented them, in fact. Running manual defrag on server machine, like: sudo btrfs filesystem defrag -v -t4G -r /home takes ages and can cause 120 second timeout kernel error in dmesg due to service timeouts. I prefer to autodefrag gradually, overtime, mount option seems to be good for that. My current fstab mounting: noatime,space_cache=v2,compress-force=zstd:3 0 2 Will autodefrag break COW files? Like I copy paste a file and I save space, but defrag with destroy this space saving? Also, will autodefrag compress files automatically, as mount option enforces (compress-force=zstd:3)? Any suggestions welcome. -- With kindest regards, Piotr. ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ ⠈⠳⣄⠀⠀⠀⠀
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Btrfs best practices "Jorge P. de Morais Neto" <jorge+list@disroot.org> - 2021-12-16 18:20 +0100
Re: Btrfs best practices Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2021-12-16 19:00 +0100
Re: Btrfs best practices Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-16 19:20 +0100
Re: Btrfs best practices Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-16 19:20 +0100
Re: Btrfs best practices: defrag? piorunz <piorunz@gmx.com> - 2022-01-26 21:40 +0100
Re: Btrfs best practices: defrag? Andy Smith <andy@strugglers.net> - 2022-01-27 23:20 +0100
Re: Btrfs best practices Jorge P. de Morais Neto <jorge+list@disroot.org> - 2022-01-29 21:00 +0100
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