On Sat, Mar 08, 2014 at 09:55:50PM +0000, Josef Bacik wrote: > Hey Hugo will you try the danger branch on btrfs-next, Wang changed the locking a bit. Thanks, Sure. I'll build a kernel tonight and report tomorrow. I'm not sure how repeatable the problem is, though. I'll see if I can quantify that, too. Hugo. > Josef > > Hugo Mills <hugo@xxxxxxxxxxxxx> wrote: > > > Is there anything that can be done about the issues of btrfs send > blocking? I've been writing a backup script (slowly), and several > times I've managed to hit a situation where large chunks of the > machine grind to a complete halt in D state because the backup script > has jammed up. > > Now, I'm aware that you can't send and receive to the same > filesystem at the same time, and that's a restriction I can live with. > However, having things that aren't related to the backup process > suddenly stop working because the backup script is trying to log its > progress to the same FS it's backing up is... umm... somewhat vexing, > to say the least. > > Is this a truly fundamental property of send/receive, or is there > likely to be a simple(ish) solution? > > 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 --- Well, you don't get to be a kernel hacker simply by looking --- good in Speedos. -- Rusty Russell
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