Best strategie to remove devices from pool

Hi, I want to remove two devices from a BTRFS RAID 1 pool. It should be enough free space to do it, but what is the best strategie. Remove both device in one call 'btrfs dev rem /dev/sda1 /dev/sdb1' (for example) or should it be better in two separate calls? What is faster? Are there other

WARNING: ... at fs/btrfs/ctree.h:1559 btrfs_update_device+0x1be/0x1d0 [btrfs]

Hi, I update kernel from 4.11.10 to 4.13.4 and since that I get the following message in the kernel journal calling 'scrub' or 'balance'. I use Fedora 26 with btrfs-progs v4.9.1. What does this mean and (more important) what can I do? Bye Frank BTRFS info (device dm-7): relocating

How to disable/revoke 'compression'?

Hi, I used the mount option 'compression' on some mounted sub volumes. How can I revoke the compression? Means to delete the option and get all data uncompressed on this volume. Is it enough to remount the sub volume without this option? Or is it necessary to do some addional step (balancing?) to

Replace missing disc => strange result!?

Hi, I had a disc failure and must replace it. I followed the description on https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devi ces and started the replacement. Setup is a two disc RAID1! After it was done, I called 'btrfs fi us /mn/btrfsroot' and I got the output below. What

Save to use 'clear_cache' in mount -o remount?

Hi, is it safe (has it an effect?) to use the 'clear_cache' option in a 'mount -o remount'? I recognize messages in my kernel log regarding 'BTRFS info (device dm-7): The free space cache file (31215079915520) is invalid. skip it'. I would like to fix it and would do it (in best case) without

Re: Best Practice: Add new device to RAID1 pool (Summary)

Am Montag, den 24.07.2017, 18:40 +0200 schrieb Cloud Admin: > Am Montag, den 24.07.2017, 10:25 -0400 schrieb Austin S. Hemmelgarn: > > On 2017-07-24 10:12, Cloud Admin wrote: > > > Am Montag, den 24.07.2017, 09:46 -0400 schrieb Austin S. > > > Hemmelgarn: > > >

Re: Best Practice: Add new device to RAID1 pool

Am Montag, den 24.07.2017, 20:42 + schrieb Hugo Mills: > On Mon, Jul 24, 2017 at 02:35:05PM -0600, Chris Murphy wrote: > > On Mon, Jul 24, 2017 at 5:27 AM, Cloud Admin <admin@cloud.haefemeie > > r.eu> wrote: > > > > > I am a little bit confused be

Re: Best Practice: Add new device to RAID1 pool

Am Montag, den 24.07.2017, 23:12 +0200 schrieb waxhead: > > Chris Murphy wrote: > > This may be a stupid question , but are your pool of butter (or > BTRFS  > pool) by any chance hooked up via USB? If this is USB2.0 at No, it is a SATA array with (currently) four 8TB discs. -- To unsubscribe

Re: Best Practice: Add new device to RAID1 pool

Am Montag, den 24.07.2017, 10:25 -0400 schrieb Austin S. Hemmelgarn: > On 2017-07-24 10:12, Cloud Admin wrote: > > Am Montag, den 24.07.2017, 09:46 -0400 schrieb Austin S. > > Hemmelgarn: > > > On 2017-07-24 07:27, Cloud Admin wrote: > > > > Hi, > > &

Re: Best Practice: Add new device to RAID1 pool

Am Montag, den 24.07.2017, 19:08 +0500 schrieb Roman Mamedov: > On Mon, 24 Jul 2017 09:46:34 -0400 > "Austin S. Hemmelgarn" wrote: > > > > I am a little bit confused because the balance command is running > > > since > > > 12 hours and only 3GB of data are touched. This

Re: Best Practice: Add new device to RAID1 pool

Am Montag, den 24.07.2017, 09:46 -0400 schrieb Austin S. Hemmelgarn: > On 2017-07-24 07:27, Cloud Admin wrote: > > Hi, > > I have a multi-device pool (three discs) as RAID1. Now I want to > > add a > > new disc to increase the pool. I followed the des

Best Practice: Add new device to RAID1 pool

Hi, I have a multi-device pool (three discs) as RAID1. Now I want to add a new disc to increase the pool. I followed the description on https://bt rfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices and used 'btrfs add '. After that I called a balance for rebalancing the RAID1 using