Re: Shrinking a device - performance?

Hi, > On Mar 27, 2017, at 4:48 PM, Roman Mamedov wrote: > > On Mon, 27 Mar 2017 15:20:37 +0200 > Christian Theune wrote: > >> (Background info: we’re migrating large volumes from btrfs to xfs and can >> only do this step by step: copying some data, shrinking the btr

Re: Shrinking a device - performance?

for the current shrinking job to finish but this is likely limited to the “find free space” algorithm. We’re talking about a few megabytes converted per second. Sigh. Cheers, Christian Theune -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH ·

Re: Shrinking a device - performance?

Hi, > On Mar 27, 2017, at 3:50 PM, Christian Theune wrote: > > Hi, > >> On Mar 27, 2017, at 3:46 PM, Austin S. Hemmelgarn >> wrote: >>> >>>> Something I’d like to verify: does having traffic on the volume have >>>> the potential to

Re: Shrinking a device - performance?

old FS, and restore from a backup. If you can afford to take the system > off-line temporarily, this will almost certainly go faster (assuming you have > a reasonably fast means of restoring backups). Well. This is the backup. ;) Thanks, Christian -- Christian Theune · c...@flyingc

Re: Shrinking a device - performance?

epeat. If someone should have any suggestions to speed this up and not having to think in terms of _months_ then I’m all ears.) Cheers, Christian -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle

Re: Shrinking a device - performance?

> On Mar 27, 2017, at 1:51 PM, Christian Theune wrote: > > Hi, > > (I hope I’m not double posting. My mail client was misconfigured and I think > I only managed to send the mail correctly this time.) Turns out I did double post. Mea culpa. -- Christian Theune · c...@fly

Shrinking a device - performance?

once every 30 seconds or so. Does this sound fishy or normal to you? Kind regards, Christian -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle (Saale) · Deutschland HR Stendal

Shrinking a device - performance?

this time. The filesystem is seeing regular usage (read and write) and when I’m suspending any application traffic I see about 1GiB of movement every now and then. Maybe once every 30 seconds or so. Does this sound fishy or normal to you? Kind regards, Christian -- Christian Theune · c...@flyin

Re: Downgrading kernel 4.9 to 4.4 with space_cache=v2 enabled?

33 | Linux kernel panic: ry and no k 34 | Linux kernel panic: illable pro 35 | Linux kernel panic: cesses... Cheers, Christian -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle (Saale

Downgrading kernel 4.9 to 4.4 with space_cache=v2 enabled?

had some unpleasant surprises with FS’ in the last months, so I thought I’d rather ask.) Kind regards, Christian -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle (Saale) · Deutschland HR