From: Andrei Borzenkov <arvidjaar@gmail.com>
To: Eli V <eliventer@gmail.com>, Paul Jones <paul@pauljones.id.au>
Cc: Victor Hooi <victorhooi@gmail.com>,
linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Using Intel Optane to accelerate a BTRFS array? (equivalent of ZLOG/SIL for ZFS?)
Date: Tue, 31 Mar 2020 20:09:59 +0300 [thread overview]
Message-ID: <2ff672d4-875b-5242-96d6-1e248e2aa57a@gmail.com> (raw)
In-Reply-To: <CAJtFHUSjwBKGyjSQfB-aZwsvV=4AcnG+-h5uF_4zmBOESxd=hA@mail.gmail.com>
31.03.2020 20:01, Eli V пишет:
>
> Another option is to put the 12TB drives in an mdadm RAID, and then
> use the mdadm raid & the ssd for btrfs RAID1 metadata, with SINGLE
> data on the the array.
How do you restrict specific device for metadata only?
> Currently, this will make roughly half of the
> meta data lookups run at SSD speed, but there is a pending patch to
> allow all the metadata reads to go to the SSD. This option is, of
> course, only useful for speeding up metadata operations. It can make
> large btrfs filesystems feel much more responsive in interactive use
> however.
>
next prev parent reply other threads:[~2020-03-31 17:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-29 22:30 Using Intel Optane to accelerate a BTRFS array? (equivalent of ZLOG/SIL for ZFS?) Victor Hooi
2020-03-30 5:46 ` Andrei Borzenkov
2020-03-30 6:00 ` Paul Jones
2020-03-31 17:01 ` Eli V
2020-03-31 17:09 ` Andrei Borzenkov [this message]
2020-03-31 20:08 ` Goffredo Baroncelli
2020-03-31 21:44 ` Goffredo Baroncelli
2020-03-31 17:17 ` Roman Mamedov
2020-03-31 17:31 ` Eli V
2020-03-31 17:42 ` Roman Mamedov
2020-03-31 19:46 ` Eli V
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