From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from frost.carfax.org.uk ([85.119.82.111]:58089 "EHLO frost.carfax.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932454AbcKBJMw (ORCPT ); Wed, 2 Nov 2016 05:12:52 -0400 Date: Wed, 2 Nov 2016 09:12:49 +0000 From: Hugo Mills To: Christian =?iso-8859-1?Q?V=F6lker?= Cc: linux-btrfs@vger.kernel.org Subject: Re: Resizing BTRFS - raw partition Message-ID: <20161102091249.GL16645@carfax.org.uk> References: <92e3c63e-0301-7a25-7c56-56447a1948cc@knebb.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ai3I8gwHc37+ASRI" In-Reply-To: <92e3c63e-0301-7a25-7c56-56447a1948cc@knebb.de> Sender: linux-btrfs-owner@vger.kernel.org List-ID: --ai3I8gwHc37+ASRI Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Nov 02, 2016 at 09:58:41AM +0100, Christian V=F6lker wrote: > Hi all, >=20 > 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 >=20 > 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 >=20 > 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.=20 > Do I really have to reboot? btrfs fi resize :max /mountpoint btrfs dev scan is just used to tell the kernel which devices contain [parts of] which btrfs filesystems. Hugo. --=20 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 M= ars --ai3I8gwHc37+ASRI Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJYGa4RAAoJEFheFHXiqx3kKh4QAJOS+cbFFlJEW4OELo6Tp4Qo mn/F9orDBXVVb2vAiyk6P1DsI2WPN/8Fewla1p4tF/FDyIwDgD67OffNAjHqmiIO JvB+lleq0Rz3MGr5/0icFLEyfw0aXFo+86XU54QJTQbsLMpQ7lyfLcEF1GiW55QI zDTXUTWIs8BNSN5LRDRei4XTOSrUmJuU25EmX4z4M+X8WZ7ggacHyoST11iPuhvh kZJsbv3IpBPLKT710T/MkkLAI7K0Gnsv5tQjOaurYlAMUi86AnXPL1pcroRv4p4y GhPIU9tj3rclsmcmFvMc81CTDEoO9zDAwykvA4tXoYJzdCk+TMCoUGElgOj1Xt8b jt9z4YZ/SerSyYJQN9uscJdF2IjAsAIeor+6mR85Sd5qyZZBJCHdlzgKW7XnposC UmK75NCmIP7eRM1F7UKo0ZtSAYuo8OEMNoXxCEDcEYjzhyLxmAppOs1z3i7IvqXa OxZ6nYEpSurMml9wQNqdZQHH49xwXOlrTXGaJGDnDf/LDCKSjj9yXdUH3Sre8tAo JRO4ddJK9RItORcv5ERyWbp8c7aYYOfDDZlWIsdvpd7oQSCkP6cOF2jtQKFNQu2A HSHzZ1V0nDgpB3HwQmoBqSBJ9Ify8yayLmup18ZmvRF7c7bHSCVr13g487cxOBuc 8BQaznhaKlUGrhzaz50B =VykP -----END PGP SIGNATURE----- --ai3I8gwHc37+ASRI--