[dm-devel] [git pull] more device mapper changes for 4.15

Hi Linus, Given your expected travel I figured I'd get these fixes to you sooner rather than later. The following changes since commit ef7afb3656854de04fe03b0b9b4f3722b5722d8d: dm cache: lift common migration preparation code to alloc_migration() (2017-11-10 15:45:07 -0500) are available in

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On Thu, Nov 16, 2017 at 11:47:45AM -0500, Austin S. Hemmelgarn wrote: > > > >At least btrfs can take the advantage of the simplicity of separate layers. > > > >And other filesystem can get a little higher chance to recover its > >metadata if built on dm-raid. > Again, just put dm-integrity below

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 2017年11月16日 20:33, Zdenek Kabelac wrote: > Dne 16.11.2017 v 11:04 Qu Wenruo napsal(a): >> >> >> On 2017年11月16日 17:43, Zdenek Kabelac wrote: >>> Dne 16.11.2017 v 09:08 Qu Wenruo napsal(a): > [What we have] The nearest infrastructure I found in kernel is

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 2017年11月16日 17:43, Zdenek Kabelac wrote: > Dne 16.11.2017 v 09:08 Qu Wenruo napsal(a): >> >> >>> >> [What we have] >> The nearest infrastructure I found in kernel is >> bio_integrity_payload. >> > > Hi > > We already have  dm-integrity target upstream. > What's missing

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 2017-11-16 07:33, Zdenek Kabelac wrote: Dne 16.11.2017 v 11:04 Qu Wenruo napsal(a): On 2017年11月16日 17:43, Zdenek Kabelac wrote: Dne 16.11.2017 v 09:08 Qu Wenruo napsal(a): [What we have] The nearest infrastructure I found in kernel is bio_integrity_payload. Hi We already have 

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

Dne 16.11.2017 v 11:04 Qu Wenruo napsal(a): On 2017年11月16日 17:43, Zdenek Kabelac wrote: Dne 16.11.2017 v 09:08 Qu Wenruo napsal(a): [What we have] The nearest infrastructure I found in kernel is bio_integrity_payload. Hi We already have  dm-integrity target upstream. What's missing

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

Dne 16.11.2017 v 09:08 Qu Wenruo napsal(a): [What we have] The nearest infrastructure I found in kernel is bio_integrity_payload. Hi We already have dm-integrity target upstream. What's missing in this target ? Regards Zdenek -- dm-devel mailing list dm-devel@redhat.com

[dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

Hi all, [Background] Recently I'm considering the possibility to use checksum from filesystem to enhance device-mapper raid. The idea behind it is quite simple, since most modern filesystems have checksum for their metadata, and even some (btrfs) have checksum for data. And for btrfs RAID1/10

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 16.11.2017 04:18, Qu Wenruo wrote: > Hi all, > > [Background] > Recently I'm considering the possibility to use checksum from filesystem > to enhance device-mapper raid. > > The idea behind it is quite simple, since most modern filesystems have > checksum for their metadata, and even some

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 2017年11月16日 14:54, Nikolay Borisov wrote: > > > On 16.11.2017 04:18, Qu Wenruo wrote: >> Hi all, >> >> [Background] >> Recently I'm considering the possibility to use checksum from filesystem >> to enhance device-mapper raid. >> >> The idea behind it is quite simple, since most modern

Re: [dm-devel] Ideas to reuse filesystem's checksum to enhance dm-raid1/10/5/6?

On 2017年11月16日 15:42, Nikolay Borisov wrote: > > > On 16.11.2017 09:38, Qu Wenruo wrote: >> >> >> On 2017年11月16日 14:54, Nikolay Borisov wrote: >>> >>> >>> On 16.11.2017 04:18, Qu Wenruo wrote: Hi all, [Background] Recently I'm considering the possibility to use checksum