> On 11/24/20 8:20 AM, Simon Matter wrote:
>
>> Sure, and for large disks I even go further: don't put the whole disk
>> into
>> one RAID device but build multiple segments, like create 6 partitions of
>> same size on each disk and build six RAID1s out of it. So, if there is
>> an
>> issue on one d
On 11/24/20 8:20 AM, Simon Matter wrote:
Sure, and for large disks I even go further: don't put the whole disk into
one RAID device but build multiple segments, like create 6 partitions of
same size on each disk and build six RAID1s out of it. So, if there is an
issue on one disk in one segment,
On Tue, Nov 24, 2020 at 12:18:57PM -0700, Warren Young wrote:
> ZFS is ready today.
I disagree.
It is ready today only if you are willing to abandon Linux entirely
and switch to BSD, or run a Linux distro like Ubuntu that is possibly
violating a license. 3rd-party repositories that use dkms c
On Nov 24, 2020, at 10:05 AM, Simon Matter wrote:
>
> Why is a layered approach
> worse than a fully included solution like ZFS?
Just one reason is that you lose visibility of lower-level elements from the
top level.
You gave the example of a bad block in a RAID. What current RHEL type system
On 11/24/20 12:44 PM, Simon Matter wrote:
On 11/24/20 11:05 AM, Simon Matter wrote:
On 11/24/20 1:20 AM, Simon Matter wrote:
On 23/11/2020 17:16, Ralf Prengel wrote:
Backup
Von meinem iPhone gesendet
You do have a recent backup available anyway, haven't you? That is:
Even
wit
>
>
> On 11/24/20 11:05 AM, Simon Matter wrote:
>>>
>>>
>>> On 11/24/20 1:20 AM, Simon Matter wrote:
> On 23/11/2020 17:16, Ralf Prengel wrote:
>> Backup
>>
>> Von meinem iPhone gesendet
>
> You do have a recent backup available anyway, haven't you? That is:
> Ev
On Nov 24, 2020, at 10:43 AM, cen...@niob.at wrote:
>
> On 24/11/2020 18:32, John Pierce wrote:
>> zpool create newpool mirror sdb sdc mirror sdd sde mirror sdf sdg mirror
>> sdh sdi spare sdj sdk
>> zfs create -o mountpoint=/var/lib/pgsql-11 newpool/postgres11
>
> This *might* be a valid answer
On 24/11/2020 18:32, John Pierce wrote:
zpool create newpool mirror sdb sdc mirror sdd sde mirror sdf sdg mirror
sdh sdi spare sdj sdk
zfs create -o mountpoint=/var/lib/pgsql-11 newpool/postgres11
and done.
This *might* be a valid answer if zfs was supported on plain CentOS...
(and if the qu
zpool create newpool mirror sdb sdc mirror sdd sde mirror sdf sdg mirror
sdh sdi spare sdj sdk
zfs create -o mountpoint=/var/lib/pgsql-11 newpool/postgres11
and done.
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On 11/24/20 11:05 AM, Simon Matter wrote:
On 11/24/20 1:20 AM, Simon Matter wrote:
On 23/11/2020 17:16, Ralf Prengel wrote:
Backup
Von meinem iPhone gesendet
You do have a recent backup available anyway, haven't you? That is:
Even
without planning to replace disks. And testing s
> On Tue, 24 Nov 2020 at 02:20, Simon Matter wrote:
>
>> > On 23/11/2020 17:16, Ralf Prengel wrote:
>> >> Backup
>> >>
>> >> Von meinem iPhone gesendet
>> >
>> > You do have a recent backup available anyway, haven't you? That is:
>> Even
>> > without planning to replace disks. And testing
> --On Monday, November 23, 2020 4:46 PM +0100 Simon Matter
> wrote:
>
>> I suggest to "mdadm --fail" one drive, then "mdadm --remove" it. After
>> replacing the drive you can "mdadm --add" it.
>
> Does it make sense to dd or ddrescue from the removed drive to the
> replacement? My md RAID set is
>
>
> On 11/24/20 1:20 AM, Simon Matter wrote:
>>> On 23/11/2020 17:16, Ralf Prengel wrote:
Backup
Von meinem iPhone gesendet
>>>
>>> You do have a recent backup available anyway, haven't you? That is:
>>> Even
>>> without planning to replace disks. And testing such
>>> strat
On Tue, 24 Nov 2020 at 02:20, Simon Matter wrote:
> > On 23/11/2020 17:16, Ralf Prengel wrote:
> >> Backup
> >>
> >> Von meinem iPhone gesendet
> >
> > You do have a recent backup available anyway, haven't you? That is: Even
> > without planning to replace disks. And testing such strategi
--On Monday, November 23, 2020 4:46 PM +0100 Simon Matter
wrote:
I suggest to "mdadm --fail" one drive, then "mdadm --remove" it. After
replacing the drive you can "mdadm --add" it.
Does it make sense to dd or ddrescue from the removed drive to the
replacement? My md RAID set is on primary
On 11/24/20 1:20 AM, Simon Matter wrote:
On 23/11/2020 17:16, Ralf Prengel wrote:
Backup
Von meinem iPhone gesendet
You do have a recent backup available anyway, haven't you? That is: Even
without planning to replace disks. And testing such strategies/sequences
using loopback devic
> On 23/11/2020 17:16, Ralf Prengel wrote:
>> Backup
>>
>> Von meinem iPhone gesendet
>
> You do have a recent backup available anyway, haven't you? That is: Even
> without planning to replace disks. And testing such strategies/sequences
> using loopback devices is definitely a good idea to
On 23/11/2020 17:16, Ralf Prengel wrote:
Backup
Von meinem iPhone gesendet
You do have a recent backup available anyway, haven't you? That is: Even
without planning to replace disks. And testing such strategies/sequences
using loopback devices is definitely a good idea to get used to
Backup
Von meinem iPhone gesendet
> Am 23.11.2020 um 17:10 schrieb cen...@niob.at:
>
> On 23/11/2020 16:49, Frank Bures wrote:
>> On 11/23/20 10:46 AM, Simon Matter wrote:
Hi,
I want to replace my hard drives based SW RAID-1 with SSD's.
What would be the recom
On 23/11/2020 16:49, Frank Bures wrote:
On 11/23/20 10:46 AM, Simon Matter wrote:
Hi,
I want to replace my hard drives based SW RAID-1 with SSD's.
What would be the recommended procedure? Can I just remove one drive,
replace with SSD and rebuild, then repeat with the other drive?
I suggest
On 23/11/2020 15:49, Frank Bures wrote:
On 11/23/20 10:46 AM, Simon Matter wrote:
Hi,
I want to replace my hard drives based SW RAID-1 with SSD's.
What would be the recommended procedure? Can I just remove one drive,
replace with SSD and rebuild, then repeat with the other drive?
I suggest
On 11/23/20 10:46 AM, Simon Matter wrote:
Hi,
I want to replace my hard drives based SW RAID-1 with SSD's.
What would be the recommended procedure? Can I just remove one drive,
replace with SSD and rebuild, then repeat with the other drive?
I suggest to "mdadm --fail" one drive, then "mdadm
> Hi,
>
> I want to replace my hard drives based SW RAID-1 with SSD's.
>
> What would be the recommended procedure? Can I just remove one drive,
> replace with SSD and rebuild, then repeat with the other drive?
I suggest to "mdadm --fail" one drive, then "mdadm --remove" it. After
replacing the d
Hi,
I want to replace my hard drives based SW RAID-1 with SSD's.
What would be the recommended procedure? Can I just remove one drive,
replace with SSD and rebuild, then repeat with the other drive?
Thanks
Frank
--
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