* Which filesystem for a hybris raid1?
@ 2013-09-28 14:18 Hans Kraus
2013-09-28 15:28 ` Roberto Spadim
2013-09-29 19:41 ` David Brown
0 siblings, 2 replies; 5+ messages in thread
From: Hans Kraus @ 2013-09-28 14:18 UTC (permalink / raw)
To: linux-raid
Hi,
I will move the root of my server to a hybrid raid1. Which filesystem
should I choose: F2FS or Ext4? The /boot stays on a separate partition.
Regards, Hans
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Which filesystem for a hybris raid1?
2013-09-28 14:18 Which filesystem for a hybris raid1? Hans Kraus
@ 2013-09-28 15:28 ` Roberto Spadim
2013-09-28 17:04 ` Hans Kraus
2013-09-29 19:41 ` David Brown
1 sibling, 1 reply; 5+ messages in thread
From: Roberto Spadim @ 2013-09-28 15:28 UTC (permalink / raw)
To: Hans Kraus; +Cc: Linux-RAID
what hybrid means?
2013/9/28 Hans Kraus <hans@hanswkraus.com>:
> Hi,
>
> I will move the root of my server to a hybrid raid1. Which filesystem
> should I choose: F2FS or Ext4? The /boot stays on a separate partition.
>
> Regards, Hans
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Roberto Spadim
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Which filesystem for a hybris raid1?
2013-09-28 15:28 ` Roberto Spadim
@ 2013-09-28 17:04 ` Hans Kraus
2013-09-28 17:18 ` Roberto Spadim
0 siblings, 1 reply; 5+ messages in thread
From: Hans Kraus @ 2013-09-28 17:04 UTC (permalink / raw)
Cc: Linux-RAID
Am 28.09.2013 17:28, schrieb Roberto Spadim:
> what hybrid means?
> [...]
An SSD and a conventional HD as mdadm Raid 1, the conventional HD
added with '--write-behind --write-mostly' during the mdadm create.
Regards, Hans
(Sorry, forgot the list during my first reply)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Which filesystem for a hybris raid1?
2013-09-28 17:04 ` Hans Kraus
@ 2013-09-28 17:18 ` Roberto Spadim
0 siblings, 0 replies; 5+ messages in thread
From: Roberto Spadim @ 2013-09-28 17:18 UTC (permalink / raw)
To: Hans Kraus; +Cc: Linux-RAID
hi Hans!
well, this was discussed some times here, and i tested something like it
well if you want more secure disk, use raid 1,5,6
if you want speed use cache (bcache, flashcache, dm cache)
the write behind will not give a lot of speed, i think that a raid1
with hdd + ssd as cache is better, but didn't tested yet, i have a
revodrive here, and it have two devices (sda/sdb) this could allow a
raid1-hdd raid1-ssd and give secure at cache side...
maybe others guves have more ideas here...
Sans told me to buy a raid hardware with cache and bbu, it's better
than a raid1 + sdd as cache, i didn't cehcked yet... but probably i
will do
2013/9/28 Hans Kraus <hans@hanswkraus.com>:
>
> Am 28.09.2013 17:28, schrieb Roberto Spadim:
>> what hybrid means?
>> [...]
>
> An SSD and a conventional HD as mdadm Raid 1, the conventional HD
> added with '--write-behind --write-mostly' during the mdadm create.
>
> Regards, Hans
>
> (Sorry, forgot the list during my first reply)
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Roberto Spadim
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Which filesystem for a hybris raid1?
2013-09-28 14:18 Which filesystem for a hybris raid1? Hans Kraus
2013-09-28 15:28 ` Roberto Spadim
@ 2013-09-29 19:41 ` David Brown
1 sibling, 0 replies; 5+ messages in thread
From: David Brown @ 2013-09-29 19:41 UTC (permalink / raw)
To: Hans Kraus; +Cc: linux-raid
On 28/09/13 16:18, Hans Kraus wrote:
> Hi,
>
> I will move the root of my server to a hybrid raid1. Which filesystem
> should I choose: F2FS or Ext4? The /boot stays on a separate partition.
>
> Regards, Hans
F2FS is very much in development, and I don't think it is ready for
"prime time" yet. It is an interesting idea, but I would be sceptical
about using it as a root fs. I am also not sure how effective it will
be as a filesystem on a hybrid with a hard disk as well as an SSD.
<http://lwn.net/Articles/518988/>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-09-29 19:41 UTC | newest]
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2013-09-28 14:18 Which filesystem for a hybris raid1? Hans Kraus
2013-09-28 15:28 ` Roberto Spadim
2013-09-28 17:04 ` Hans Kraus
2013-09-28 17:18 ` Roberto Spadim
2013-09-29 19:41 ` David Brown
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