[gentoo-user] Re: btrfs fails to balance

2015-01-20 Thread James
Bill Kenworthy billk at iinet.net.au writes: The main thing keeping me away from CephFS is that it has no mechanism for resolving silent corruption. Btrfs underneath it would obviously help, though not for failure modes that involve CephFS itself. I'd feel a lot better if CephFS had

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-20 Thread Rich Freeman
On Tue, Jan 20, 2015 at 10:07 AM, James wirel...@tampabay.rr.com wrote: Bill Kenworthy billk at iinet.net.au writes: You can turn off COW and go single on btrfs to speed it up but bugs in ceph and btrfs lose data real fast! Interesting idea, since I'll have raid1 underneath each node. I'll

[gentoo-user] Re: btrfs fails to balance

2015-01-20 Thread James
Rich Freeman rich0 at gentoo.org writes: You can turn off COW and go single on btrfs to speed it up but bugs in ceph and btrfs lose data real fast! So, btrfs and ceph solve an overlapping set of problems in an overlapping set of ways. In general adding data security often comes at the

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-20 Thread Rich Freeman
On Tue, Jan 20, 2015 at 12:27 PM, James wirel...@tampabay.rr.com wrote: Raid 1 with btrfs can not only protect the ceph fs files but the gentoo node installation itself. Agree 100%. Like I said, the right solution depends on your situation. If you're using the server doing ceph storage only

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-20 Thread Bill Kenworthy
On 21/01/15 00:03, Rich Freeman wrote: On Tue, Jan 20, 2015 at 10:07 AM, James wirel...@tampabay.rr.com wrote: Bill Kenworthy billk at iinet.net.au writes: You can turn off COW and go single on btrfs to speed it up but bugs in ceph and btrfs lose data real fast! Interesting idea, since I'll

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-19 Thread Bill Kenworthy
On 20/01/15 05:10, Rich Freeman wrote: On Mon, Jan 19, 2015 at 11:50 AM, James wirel...@tampabay.rr.com wrote: Bill Kenworthy billk at iinet.net.au writes: I was wondering what my /etc/fstab should look like using uuids, raid 1 and btrfs. From mine:

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-19 Thread Bill Kenworthy
On 20/01/15 00:50, James wrote: Bill Kenworthy billk at iinet.net.au writes: Am 19.01.2015 um 09:32 schrieb Bill Kenworthy: Can someone suggest what is causing a balance on this raid 1 Interesting. I am about to test (reboot) a btrfs, raid one installation. Brilliant, you have hit

[gentoo-user] Re: btrfs fails to balance

2015-01-19 Thread James
Bill Kenworthy billk at iinet.net.au writes: Am 19.01.2015 um 09:32 schrieb Bill Kenworthy: Can someone suggest what is causing a balance on this raid 1 Interesting. I am about to test (reboot) a btrfs, raid one installation. Brilliant, you have hit on the answer! - The ancient 300GB

Re: [gentoo-user] Re: btrfs fails to balance

2015-01-19 Thread Rich Freeman
On Mon, Jan 19, 2015 at 11:50 AM, James wirel...@tampabay.rr.com wrote: Bill Kenworthy billk at iinet.net.au writes: I was wondering what my /etc/fstab should look like using uuids, raid 1 and btrfs. From mine: /dev/disk/by-uuid/7d9f3772-a39c-408b-9be0-5fa26eec8342 / btrfs