[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-17 Thread Kai Krakow
Am Sun, 17 Sep 2017 08:20:50 -0500 schrieb Dan Douglas : > On 09/17/2017 04:17 AM, Kai Krakow wrote: > > Am Sun, 17 Sep 2017 01:20:45 -0500 > > schrieb Dan Douglas : > > > >> On 09/16/2017 07:06 AM, Kai Krakow wrote: > [...] > [...] > >> [...] >

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-17 Thread Dan Douglas
On 09/17/2017 04:17 AM, Kai Krakow wrote: > Am Sun, 17 Sep 2017 01:20:45 -0500 > schrieb Dan Douglas : > >> On 09/16/2017 07:06 AM, Kai Krakow wrote: >>> Am Fri, 15 Sep 2017 14:28:49 -0400 >>> schrieb Rich Freeman : >>> On Fri, Sep 8, 2017 at 3:16 PM,

[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-17 Thread Kai Krakow
Am Sun, 17 Sep 2017 01:20:45 -0500 schrieb Dan Douglas : > On 09/16/2017 07:06 AM, Kai Krakow wrote: > > Am Fri, 15 Sep 2017 14:28:49 -0400 > > schrieb Rich Freeman : > > > >> On Fri, Sep 8, 2017 at 3:16 PM, Kai Krakow > >> wrote: >

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-17 Thread Dan Douglas
On 09/16/2017 07:06 AM, Kai Krakow wrote: > Am Fri, 15 Sep 2017 14:28:49 -0400 > schrieb Rich Freeman : > >> On Fri, Sep 8, 2017 at 3:16 PM, Kai Krakow >> wrote: >>> >>> At least in btrfs there's also a caveat that the original extents >>> may not actually

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Rich Freeman
On Sat, Sep 16, 2017 at 1:48 PM, Kai Krakow wrote: > Am Sat, 16 Sep 2017 10:05:21 -0700 > schrieb Rich Freeman : > >> >> My main concern with xfs/ext4 is that neither provides on-disk >> checksums or protection against the raid write hole. > > Btrfs suffers

[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Kai Krakow
Am Sat, 16 Sep 2017 10:05:21 -0700 schrieb Rich Freeman : > On Sat, Sep 16, 2017 at 9:43 AM, Kai Krakow > wrote: > > > > Actually, I'm running across 3x 1TB here on my desktop, with mraid1 > > and draid 0. Combined with bcache it gives confident

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Rich Freeman
On Sat, Sep 16, 2017 at 9:43 AM, Kai Krakow wrote: > > Actually, I'm running across 3x 1TB here on my desktop, with mraid1 and > draid 0. Combined with bcache it gives confident performance. > Not entirely sure I'd use the word "confident" to describe a filesystem where the

[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Kai Krakow
Am Sat, 16 Sep 2017 09:39:33 -0400 schrieb Rich Freeman : > On Sat, Sep 16, 2017 at 8:06 AM, Kai Krakow > wrote: > > > > But I guess that btrfs doesn't use 10G sized extents? And I also > > guess, this is where autodefrag jumps in. > > > > It definitely

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Rich Freeman
On Sat, Sep 16, 2017 at 8:06 AM, Kai Krakow wrote: > > But I guess that btrfs doesn't use 10G sized extents? And I also guess, > this is where autodefrag jumps in. > It definitely doesn't use 10G extents considering the chunks are only 1GB. (For those who aren't aware,

[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-16 Thread Kai Krakow
Am Fri, 15 Sep 2017 14:28:49 -0400 schrieb Rich Freeman : > On Fri, Sep 8, 2017 at 3:16 PM, Kai Krakow > wrote: > > > > At least in btrfs there's also a caveat that the original extents > > may not actually be split and the split extents share parts of the

Re: [gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-15 Thread Rich Freeman
On Fri, Sep 8, 2017 at 3:16 PM, Kai Krakow wrote: > > At least in btrfs there's also a caveat that the original extents may > not actually be split and the split extents share parts of the > original extent. That means, if you delete the original later, the copy > will

[gentoo-user] Re: [offtopic] Copy-On-Write ?

2017-09-08 Thread Kai Krakow
Am Thu, 07 Sep 2017 17:46:27 +0200 schrieb Helmut Jarausch : > Hi, > > sorry, this question is not Gentoo specific - but I know there are > many very knowledgeable people on this list. > > I'd like to "hard-link" a file X to Y - i.e. there is no additional > space on disk