https://bugzilla.kernel.org/show_bug.cgi?id=218932 --- Comment #5 from Serious (sirius@xxxxxxxxxxxxx) --- /proc/sys/vm/dirty_expire_centisecs 3000 This contradicts information from https://www.kernel.org/doc/Documentation/filesystems/ext4.txt commit=nrsec (*) Ext4 can be told to sync all its data and metadata every 'nrsec' seconds. The default value is 5 seconds. This means that if you lose your power, you will lose as much as the latest 5 seconds of work (your filesystem will not be damaged though, thanks to the journaling). This default value (or any low value) will hurt performance, but it's good for data-safety. Setting it to 0 will have the same effect as leaving it at the default (5 seconds). Setting it to very large values will improve performance. So actually commit=5 does NOT guarantee, that if you lose your power, you will lose as much as the latest 5 seconds of work. You will lose 30 seconds of work. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
