CentOS - May 2019 - is 'list_del corruption' fix available in Centos ?

On Fri, 17 May 2019, James Szinger wrote:
> On Fri, May 17, 2019 at 3:17 AM John Hodrien <J.H.Hodrien at
leeds.ac.uk> wrote:
>> RHEL advice would clearly be not to use btrfs.
>
> I'm curious, is there anything in RHEL 8 that would replace BTRFS or
> ZFS?  I'm experimenting with BTRFS on one system and the snapshot and
> subvolume features are nice.
I assume Stratis is the general answer.

jh

On May 17, 2019, at 9:53 AM, John Hodrien <J.H.Hodrien at leeds.ac.uk>
wrote:
> 
> On Fri, 17 May 2019, James Szinger wrote:
> 
>> On Fri, May 17, 2019 at 3:17 AM John Hodrien <J.H.Hodrien at
leeds.ac.uk> wrote:
>>> RHEL advice would clearly be not to use btrfs.
>> 
>> I'm curious, is there anything in RHEL 8 that would replace BTRFS
or
>> ZFS?  I'm experimenting with BTRFS on one system and the snapshot
and
>> subvolume features are nice.
> 
> I assume Stratis is the general answer.
It looks like built-in RAID didn?t land in this version, which means we?re
another 3-5 years from anything that actually works like ZFS or btrfs which are
LVM + RAID + filesystem.

According to the docs, you have to lay Stratis over MDRAID in EL8 to get storage
redundancy:

   
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/managing_file_systems/managing-layered-local-storage-with-stratis_managing-file-systems

Snapshots with Stratis appear to work more sanely than in LVM2, so that?s
something, at least.

On 5/17/19 12:45 PM, Warren Young wrote:
> On May 17, 2019, at 9:53 AM, John Hodrien <J.H.Hodrien at
leeds.ac.uk> wrote:
>> On Fri, 17 May 2019, James Szinger wrote:
>>
>>> On Fri, May 17, 2019 at 3:17 AM John Hodrien <J.H.Hodrien at
leeds.ac.uk> wrote:
>>>> RHEL advice would clearly be not to use btrfs.
>>> I'm curious, is there anything in RHEL 8 that would replace
BTRFS or
>>> ZFS?  I'm experimenting with BTRFS on one system and the
snapshot and
>>> subvolume features are nice.
>> I assume Stratis is the general answer.
> It looks like built-in RAID didn?t land in this version, which means we?re
another 3-5 years from anything that actually works like ZFS or btrfs which are
LVM + RAID + filesystem.
>
> According to the docs, you have to lay Stratis over MDRAID in EL8 to get
storage redundancy:
>
>     
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/managing_file_systems/managing-layered-local-storage-with-stratis_managing-file-systems
>
> Snapshots with Stratis appear to work more sanely than in LVM2, so that?s
something, at least.
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
I really want to upgrade to RHEL/Centos 8, but I need to keep using my 
btrfs disk/partitions. Btrfs is very useful to me.
What can I do now ?
I guess a kernel on Centos 8, that supports btrfs, will be very popular 
soon....

Warren Young wrote:
> On May 17, 2019, at 9:53 AM, John Hodrien <J.H.Hodrien at
leeds.ac.uk>
> wrote:
>> On Fri, 17 May 2019, James Szinger wrote:
>>> On Fri, May 17, 2019 at 3:17 AM John Hodrien
>>> <J.H.Hodrien at leeds.ac.uk> wrote:
>>>
>>>> RHEL advice would clearly be not to use btrfs.
>>>
>>> I'm curious, is there anything in RHEL 8 that would replace
BTRFS or
>>> ZFS?  I'm experimenting with BTRFS on one system and the
snapshot and
>>> subvolume features are nice.
>>
>> I assume Stratis is the general answer.
>>
> It looks like built-in RAID didn?t land in this version, which means
> we?re another 3-5 years from anything that actually works like ZFS or
> btrfs which are LVM + RAID + filesystem.
>
> According to the docs, you have to lay Stratis over MDRAID in EL8 to get
> storage redundancy:
>
<snip>
I followed the link, and was reading, and I'm confused.
1. How is this different than LVM?
2. Why would you want to put it on top of LVM?

      mark "Please don't tell me 'because you can point and
click'"