Control: tag -1 upstream Hi Andrew,
andrew bezella <and...@diatribes.org> writes: > ## Path: System/File systems/btrfs > ## Type: string(none,daily,weekly,monthly) > ## Default: "weekly" > ## ServiceRestart: btrfsmaintenance-refresh > # > # Frequency of periodic balance. > # > # The frequency may be specified using one of the listed values or > # in the format documented in the "Calendar Events" section of > systemd.time(7), > # if available. > BTRFS_BALANCE_PERIOD="weekly" > > however /lib/systemd/system/btrfs-balance.timer has: > [Timer] > OnCalendar=monthly > > it would seem that either the value/note in /etc/default/btrfsmaintenance > or the OnCalendar value in btrfs-balance.timer should be updated to match > the other. > Oh yeah! I had forgotten about this minor issue. The reason I hadn't harmonised the files, doing this implicitly says that I (and Debian) might recommend weekly balanced, or recommend monthly balances. From what I've been able to gather, metadata balances have been considered to be actively harmful for some time; This is mostly at the level of tribal knowledge on the linux-btrfs mailing list. It's also the case that empty block groups are now automatically reclaimed by the kernel, so a periodic balance only seems to be useful in space-constrained situations where a lot of [meta]data churn occurs. Thus, if I do anything, I'm inclined to set the period for balance to "none" everywhere. Also, what do you think about enabling the systemd patch watcher, so that the timers are updated automatically when /etc/default/btrfsmaintenance is modified? Best, Nicholas
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