From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Gionatan Danti <g.danti@assyoma.it>
Cc: linux-xfs@vger.kernel.org
Subject: Re: Estimate xfs_repair run time
Date: Sat, 19 Aug 2017 08:48:04 -0700 [thread overview]
Message-ID: <20170819154804.GS4796@magnolia> (raw)
In-Reply-To: <d80ca25cd28ec433c39a7d7d22c4e371@assyoma.it>
On Sat, Aug 19, 2017 at 02:14:23PM +0200, Gionatan Danti wrote:
> Sorry, reposting to CC me...
>
> Il 19-08-2017 12:05 Gionatan Danti ha scritto:
> >Hi list,
> >using XFS on relatively big filesystems (> 8TB) I was wondering if it
> >is possible to estimate how much time an emergency "xfs_repair" would
> >take.
> >
> >Some specific questions:
> >- will total time depend on how much the filesystem is filled (I think
> >so...)?
> >- will total time depend on how data are layed on the physical disks
> >(ie: fragmented vs sequential)?
> >- will total time scale down with increasing spindle count (ie: single
> >disk vs 4-way RAID10)?
> >
> >On a related question: I generally use LVM to segregate/isolate my
> >virtual machine images. In this manner, even a completely blowed up
> >filesystem on one LV can not affect other LV.
> >
> >How do you feel using a single big LV + XFS + preallocated RAW disk
> >images? Can a problem on the main XFS filesystem be contained on only
> >some VM files, or it really risks to destroy the entire filesystem?
Should work fine; be sure to set the extent size hint to reduce fragmentation.
--D
> >
> >Thank you all.
>
> --
> Danti Gionatan
> Supporto Tecnico
> Assyoma S.r.l. - www.assyoma.it
> email: g.danti@assyoma.it - info@assyoma.it
> GPG public key ID: FF5F32A8
> --
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next prev parent reply other threads:[~2017-08-19 15:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-19 10:05 Estimate xfs_repair run time Gionatan Danti
2017-08-19 12:14 ` Gionatan Danti
2017-08-19 15:48 ` Darrick J. Wong [this message]
2017-08-19 16:15 ` Gionatan Danti
2017-08-19 16:20 ` Darrick J. Wong
2017-08-19 16:39 ` Gionatan Danti
2017-08-20 2:04 ` Dave Chinner
2017-08-20 5:05 ` Gionatan Danti
2017-08-20 2:10 ` Eric Sandeen
2017-08-20 5:07 ` Gionatan Danti
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