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Jul 20, 2025
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doc(faq): Add entry about how rsync handles open files #2223

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Added FaQ entry for rsync open files (Issue #1381)
johanr001 Jul 10, 2025
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Added FaQ entry for rsync open files (Issue #1381)
johanR04 Jul 10, 2025
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Update FAQ.md
johanR04 Jul 11, 2025
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Update FAQ.md
johanR04 Jul 11, 2025
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Update FAQ.md
johanR04 Jul 11, 2025
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johanR04 Jul 11, 2025
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Added TOC entry for FaQ on handling open files
johanR04 Jul 11, 2025
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Added TOC entry for FaQ on handling open files
johanR04 Jul 11, 2025
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Update FAQ.md 
Co-authored-by: Christian Buhtz <[email protected]>
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johanR04 and buhtz authored Jul 11, 2025
commit 663dfcf651133891324aabd05d8d83b80a94b806
6 changes: 5 additions & 1 deletion FAQ.md
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Expand Up @@ -548,7 +548,11 @@ can even lead to data corruption.
If using a filesystem like btrfs and ZFS that has a snapshot function this can be used together with Back in Time. Filesystem snapshots provide a read-only copy of a filesystem frozen at a specific point in time, which ensures data integrity even for open/changing files. Configure Back in Time to backup from this filesystem's read-only snapshot.

- **Use exclusions**
If the filesystem does not have filesystem snapshots available, one solution could be to exclude files that are frequently open or actively changing. The command lsof in Linux presents open files and the processes that opened them as a list. Use this list as base for configuring BIT exclusion list.
If the filesystem does not have filesystem snapshots available, one
solution could be to exclude files that are frequently open or actively
changing. The command `lsof` in GNU/Linux presents open files and the
processes that opened them as a list. Use this list as base for
configuring BIT exclusion list.

- **Application specific handling**
For applications that opens and modifies files frequently like databases or virtual machines, specific solutions my be needed. Use the databases own backup function to create a consistent copy and include that in the BIT backup. Virtual machines products typically have ability to create snapshots of their state, that can be included in BIT.
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