Differences

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--- linux:fs:btrfs:snapshots [2021/02/17 14:39] – created niziak
+++ linux:fs:btrfs:snapshots [2025/09/13 21:25] (current) – niziak
@@ Line 32: / Line 32: @@
 DISABLE_APT_SNAPSHOT="no"
 </file>
+==== Tuning ====
+<file /etc/updatedb.conf>
+PRUNENAMES = ".snapshots"
+</file>
+==== issues ====
+=== parser error : Document is empty ===
+<code>
+org.opensuse.Snapper[2126170]: :1: parser error : Document is empty
+org.opensuse.Snapper[2126170]: ^
+</code>
+**Reason:** some info.xml files are empty or corrupted
+**Solution:** locate empty info.xml files
+<code bash>
+find . -name "info.xml" -type f -empty
+# and remove snapshots manually:
+btrfs sub delete 23/snapshot
+rm 23/info.xml
+</code>
+=== system lags ===
+''snapper-cleanup.timer'' runs every 24h from system boot. It cause lots of lagging on GUI, mainly due to very slow writes to ''/tmp''.
+Workaround:
+<code bash>
+systemctl edit snapper-cleanup.timer
+[Timer]
+OnUnitActiveSec=
+OnCalendar=*-*-* 02:11:00
+</code>
+From:
+[[https://wiki.archlinux.org/title/Btrfs#Quota_groups_(qgroups)]]
+While Btrfs qgroups are considered stable for general use, enabling qgroups, especially in environments with frequent creation of large numbers of snapshots, can still lead to **performance degradation**, particularly during **snapshot deletion**. Qgroup accounting introduces additional metadata overhead and may affect system responsiveness under high-intensity snapshot workloads.