On Wed, Dec 18, 2013 at 09:37:28PM +0900, Tomasz Chmielewski wrote: > I have a btrfs filesystem which has plenty of free space left, yet it's > hitting out of space regularly. > > Here is how it looks like: > > # btrfs fi df /home > Data, RAID1: total=2.51TiB, used=1.58TiB > System, RAID1: total=32.00MiB, used=372.00KiB > Metadata, RAID1: total=48.00GiB, used=47.23GiB > > > What I read from it, is we're almost full on metadata usage, and that > might be causing out of space issues. This is highly likely. > Reading past posts on this group, I can see it's recommended to run > this if I hit out of space and the fs is low on metadata space: > > # btrfs fi balance start -dusage=5 /home > > Is it really the only workaround? Shouldn't the filesystem be more > intelligent and be able to grab some more metadata space if it's > running low? Currently, yes, it is the only approach. The automatic reclamation of unused chunks (or barely-used chunks) is on the projects list. Nobody's got round to implementing it yet. > I'd appreciate some clarifications on this (FYI, it was running > 3.11.4, upgraded to the latest rc now). Hope the above helps, Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- If it's December 1941 in Casablanca, what time is it --- in New York?
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