From: Hugo Mills <hugo@carfax.org.uk>
To: "Christian Völker" <cvoelker@knebb.de>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: Resizing BTRFS - raw partition
Date: Wed, 2 Nov 2016 09:12:49 +0000 [thread overview]
Message-ID: <20161102091249.GL16645@carfax.org.uk> (raw)
In-Reply-To: <92e3c63e-0301-7a25-7c56-56447a1948cc@knebb.de>
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On Wed, Nov 02, 2016 at 09:58:41AM +0100, Christian Völker wrote:
> Hi all,
>
> I am using btrfs as follows:
> root@srv:/srv# btrfs filesystem show
> Label: none uuid: c8f24351-ddc4-4866-843c-4e95fcb498d4
> Total devices 2 FS bytes used 1005.37GB
> devid 2 size 1.00TB used 1023.98GB path /dev/sdc
> devid 1 size 1.46TB used 1.00TB path /dev/sdb
>
> Btrfs Btrfs v0.19
That's positively antique. If your kernel is anything close to the
same age, this experience with btrfs is probably going to be extremely
painful for you.
> It is running inside a virtual machines running on VMware ESXi. I
> increased both virtual disks to 1.5TB now. I did a scsi-rescan and fdisk
> -l tells me the new size:
> Disk /dev/sdb: 1610.6 GB, 1610612736000 bytes
> Disk /dev/sdc: 1610.6 GB, 1610612736000 bytes
>
> There are no partitions created on the disks, just raw devices used for
> BTRFS. I found several sites where they resized a btrfs filesystem based
> on LVM and the new size was immediately recognized. But how to do on raw
> partitions?
Than those sites are mistaken. :)
> How do I tell btrfs the devices have been resized?
> I did not find a rescan command. btrfs scan does not change anything.
> Do I really have to reboot?
btrfs fi resize <devid>:max /mountpoint
btrfs dev scan is just used to tell the kernel which devices
contain [parts of] which btrfs filesystems.
Hugo.
--
Hugo Mills | In one respect at least, the Martians are a happy
hugo@... carfax.org.uk | people: they have no lawyers
http://carfax.org.uk/ |
PGP: E2AB1DE4 | John Carter, A Princess of Mars
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next prev parent reply other threads:[~2016-11-02 9:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 8:58 Resizing BTRFS - raw partition Christian Völker
2016-11-02 9:12 ` Hugo Mills [this message]
2016-11-02 9:18 ` Christian Völker
2016-11-02 9:29 ` Hugo Mills
2016-11-02 10:14 ` Adam Borowski
2016-11-02 10:16 ` Christian Völker
2016-11-02 11:40 ` Austin S. Hemmelgarn
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