On Tue, Oct 27, 2015 at 05:05:55PM +0100, Jakob Schürz wrote: > Found a new habit... > > I have a lot Snapshots on my drive. (Take every 10 Min a new one, every > houry one, every day one, every system-update, every plugin after > external HD...) > > If there are to much snapshots (didn't find out the count how much > exactly) balancing fails with a system-freeze. > if i delete some of my snapshots, balancing is working...
The whole machine comes to a halt, or just the balancing? If you have lots of snapshots, balance can take *insane* amounts of time -- my big storage array, for example, takes about 60 seconds to balance a data block group, and something like 4+ hours to balance some of the metadata block groups. While it's "stuck" like that, it is actually making progress, but it doesn't look like it. Hugo. > Maybe this is a hint for bugfixing!! > > Do you think? > > greez > > Jakob > > Am 2015-10-21 um 22:51 schrieb Kyle Manna: > > I had a number of similar btrfs balance crashes in the past few days, > > but the disk wasn't full. You should try tailing the system logs from > > a remote machine when it happens. You'll likely see some bug info > > before the system dies and becomes unusable. > > > > The issue I encountered is described @ > > https://bugzilla.kernel.org/show_bug.cgi?id=105681 > > ᐧ > > > > On Wed, Oct 21, 2015 at 12:38 PM, Jakob Schürz > > <wertsto...@nurfuerspam.de> wrote: > >> Hi there! > >> > >> Is it possible, what i've recognized now. My system (debian) runs on > >> btrfs, and i have a lot of snapshots on my hard-disk. > >> Since some days my system freezes totally. I recognized, it always > >> happens during btrfs-balance. > >> > >> So i deleted some of the old snapshots and tried another balance-run. > >> Nothing happened... No system-freeze. > >> > >> System-freeze means: No Keyboard-action. The Mouse is frozen, the screen > >> is frozen, no magic-sysreq, no ssh-login. > >> > >> Can btrfs cause such a freeze?? > >> > >> greez > >> > >> jakob -- Hugo Mills | Darkling's First Law of Filesystems: hugo@... carfax.org.uk | The user hates their data http://carfax.org.uk/ | PGP: E2AB1DE4 |
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