Re: [linux-lvm] raid10 to raid what? - convert

2017-10-19 Thread lejeczek
On 18/10/17 21:46, John Stoffel wrote: "lejeczek" == lejeczek writes: lejeczek> On 17/10/17 21:57, Stuart D. Gathman wrote: You still haven't said what you are trying to accomplish. I wouldn't have bothered responding to such a vague question until you provided some tantalizing clues.  Unti

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-18 Thread Xen
lejeczek schreef op 18-10-2017 17:52: I'm still looking for an answer - if it's possible then how to split raid10 into two raid0 LVs(with perhaps having data intact?) I've been fiddling with --splitmirrors but either I got it wrong or I didn't and command just fails. More than contemplating theo

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-18 Thread John Stoffel
> "lejeczek" == lejeczek writes: lejeczek> On 17/10/17 21:57, Stuart D. Gathman wrote: >> You still haven't said what you are trying to accomplish.  >> I wouldn't >> have bothered responding to such a vague question until >> you provided >> some tantalizing clues.  Until your lastest clues

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-18 Thread lejeczek
On 17/10/17 21:57, Stuart D. Gathman wrote: You still haven't said what you are trying to accomplish.  I wouldn't have bothered responding to such a vague question until you provided some tantalizing clues.  Until your lastest clues, I would have advised using rsync or dd to copy your data to

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-18 Thread Stuart D. Gathman
On Wed, 18 Oct 2017, Tanstaafl wrote: and is not the same as raid1+0 (raid1 on top of raid0). Not according to everything I've ever read about it... for example: https://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10 But this is not certain as raid10 works perfectly well

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-17 Thread Tanstaafl
On 10/17/2017, 4:57:10 PM, Stuart D. Gathman wrote: > First off, raid10 is a linux specialty (I didn't know LVM supported it, > thanks!), Eh? Not sure what you mean by that, RAID10 is used by many hardware RAID controllers, so is certainly not some kind of esoteric linux 'specialty', unless I mis

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-17 Thread Stuart D. Gathman
On Tue, 17 Oct 2017, Stuart D. Gathman wrote: thanks!), and is not the same as raid1+0 (raid1 on top of raid0). Sorry, that is raid0 on top of raid1. With raid1 on top, then after the first disk failure, the second failure has a 66% chance of destroying the data. With raid0 on top, the secon

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-17 Thread Stuart D. Gathman
You still haven't said what you are trying to accomplish. I wouldn't have bothered responding to such a vague question until you provided some tantalizing clues. Until your lastest clues, I would have advised using rsync or dd to copy your data to a new volume. But now it sounds like you ran ou

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-17 Thread lejeczek
On 16/10/17 22:16, John Stoffel wrote: lejeczek> I'm sroogling and reading but before spend whole day doing lejeczek> that, I was hoping you guys, gals, done conversion from lejeczek> raid10? Please post your configuration and explain what you're trying to do in more detail. lejeczek> I'm thi

Re: [linux-lvm] raid10 to raid what? - convert

2017-10-16 Thread John Stoffel
lejeczek> I'm sroogling and reading but before spend whole day doing lejeczek> that, I was hoping you guys, gals, done conversion from lejeczek> raid10? Please post your configuration and explain what you're trying to do in more detail. lejeczek> I'm thinking best(natural?) would be to convert t

[linux-lvm] raid10 to raid what? - convert

2017-10-16 Thread lejeczek
hi everyone I'm sroogling and reading but before spend whole day doing that, I was hoping you guys, gals, done conversion from raid10? I'm thinking best(natural?) would be to convert to two raid0 LVs, right. Am I right? Would it be optimal, and how do you do it? many thanks, L. __