Gluster users - Apr 2022 - Indexing/Importing existing files on disk

* it instructs the kernel to skip 'getfattr'
 
 
  On Mon, Apr 4, 2022 at 23:04, Strahil Nikolov<hunter86_bg at yahoo.com>
wrote:   I agree. Also it has a typo.Obviously I needed more coffee or a bigger
break.
It should be treated as 'relatime/noatime reduce the ammount of I/O requests
to your brick physical device , which increases performance by reducing
unnecessary IOPS'
Same is valid for SELINUX's mount
option:context="system_u:object_r:glusterd_brick_t:s0" . It instructs
the kernel to 'getfattr' each file in the brick as it has a specific
selinux context (this case Gluster brick files), thus reducing unnecessary IOPS.


Best Regards,Strahil Nikolov
 
 
  On Mon, Apr 4, 2022 at 9:41, Diego Zuccato<diego.zuccato at unibo.it>
wrote:   Il 03/04/2022 16:36, Strahil Nikolov ha scritto:
> Using relative/noatime mount option reduces the I/O to the brick
device.IMVHO this sentence could cause misunderstandings. :)
It could be read like "noatime slows down your brick" while, IIUC, it 
really means it *improves* the brick's performance by reducing the 
number of "housekeeping" IOs.

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Universit? di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786
________



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Hi Strahil,

interesting, would you happen to know how you could let oVirt mount it with
this flag?

Thanks Olaf

Op ma 4 apr. 2022 om 22:05 schreef Strahil Nikolov <hunter86_bg at
yahoo.com>:
> * it instructs the kernel to skip 'getfattr'
>
> On Mon, Apr 4, 2022 at 23:04, Strahil Nikolov
> <hunter86_bg at yahoo.com> wrote:
> I agree. Also it has a typo.Obviously I needed more coffee or a bigger
> break.
>
> It should be treated as 'relatime/noatime reduce the ammount of I/O
> requests to your brick physical device , which increases performance by
> reducing unnecessary IOPS'
>
> Same is valid for SELINUX's mount option:
> context="system_u:object_r:glusterd_brick_t:s0" . It instructs
the kernel
> to 'getfattr' each file in the brick as it has a specific selinux
context
> (this case Gluster brick files), thus reducing unnecessary IOPS.
>
>
>
> Best Regards,
> Strahil Nikolov
>
> On Mon, Apr 4, 2022 at 9:41, Diego Zuccato
> <diego.zuccato at unibo.it> wrote:
> Il 03/04/2022 16:36, Strahil Nikolov ha scritto:
>
> > Using relative/noatime mount option reduces the I/O to the brick
> device.IMVHO this sentence could cause misunderstandings. :)
> It could be read like "noatime slows down your brick" while,
IIUC, it
> really means it *improves* the brick's performance by reducing the
> number of "housekeeping" IOs.
>
> --
> Diego Zuccato
> DIFA - Dip. di Fisica e Astronomia
> Servizi Informatici
> Alma Mater Studiorum - Universit? di Bologna
> V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
> tel.: +39 051 20 95786
>
> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge: https://meet.google.com/cpu-eiue-hvk
> Gluster-users mailing list
> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users
>
> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge: https://meet.google.com/cpu-eiue-hvk
> Gluster-users mailing list
> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users
>
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