What about Snapshots in XFS?
I think, they added this years ago.
I lived BTRFS for snapshots, but had much problems on an external drive and multiple times data loss… a broken cable was the reason… but the drive wotked with ext4 much better than with btrfs…
And on a hybrid SSHD also btrfs is not the best idea, if you use snapshots (every hour for example eith cron). It makes the SSHD as slow as the HDD behind the SSD-cache…
ok. making snapshots with btrfs is also no backup-strategy (alone).
But sending the snapshot to an external drive or backup-store is a really good thing for making backups. Much faster than doing this with rsync.
BTRFS-snapshots only is no backup-method. Only if you send them to an external Store (external HD, SAN, NAS…) In case of deduplication and Copy-On-Write, a snapshot is physically the same store-location as the original. Only the few changed parts of the whole filesystem are stored on another physical place on the same HD.
So if you use BTRFS-snapshots you MUST send/receive the snapshots to another medium, if you want to use snapshots as backup. Data-loss is so a big danger.
ext4 works very well. I had stability issues with btrfs the multiple times I’ve tried it.
Here’s something different. I use several external USB drives with mergeFS + EXT4 to backup my file server (LVM + EXT4).
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ext4 for extreme reliabilty cases, BTRFS for everything else
I’ve been liking BtrFS for the snapshots, send/receive, and subvolumes/quota.
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wasn’t exfat support included some time ago into the kernel?
Yes, it was added into Linux Kernel 5.4 in November 2019 after Microsoft open-sourced exFAT [quick context overview].
Bfrfs for automatic snapshots and easier data recoverability out-of-the-box. I use it on SSD, but I imagine that on a HDD it works just fine too.
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What about Snapshots in XFS? I think, they added this years ago.
I lived BTRFS for snapshots, but had much problems on an external drive and multiple times data loss… a broken cable was the reason… but the drive wotked with ext4 much better than with btrfs…
And on a hybrid SSHD also btrfs is not the best idea, if you use snapshots (every hour for example eith cron). It makes the SSHD as slow as the HDD behind the SSD-cache…
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ok. making snapshots with btrfs is also no backup-strategy (alone). But sending the snapshot to an external drive or backup-store is a really good thing for making backups. Much faster than doing this with rsync.
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BTRFS-snapshots only is no backup-method. Only if you send them to an external Store (external HD, SAN, NAS…) In case of deduplication and Copy-On-Write, a snapshot is physically the same store-location as the original. Only the few changed parts of the whole filesystem are stored on another physical place on the same HD.
So if you use BTRFS-snapshots you MUST send/receive the snapshots to another medium, if you want to use snapshots as backup. Data-loss is so a big danger.
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Bcachefs
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