From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hubert Kario Subject: Re: btrfs-convert processing time Date: Mon, 20 Feb 2012 14:50:02 +0100 Message-ID: <1920178.zXOEpupmQW@k85hala03> References: <4F4241D1.4080506@daevel.fr> <20458953.qbO19NXijp@k85hala03> <4F424D8D.4030802@daevel.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Cc: linux-btrfs@vger.kernel.org To: Olivier Bonvalet Return-path: In-Reply-To: <4F424D8D.4030802@daevel.fr> List-ID: On Monday 20 of February 2012 14:41:33 Olivier Bonvalet wrote: > On 20/02/2012 14:20, Hubert Kario wrote: > > On Monday 20 of February 2012 13:51:29 Olivier Bonvalet wrote: > >> Hi, > >>=20 > >> I'm trying to convert two ext4 FS to btrfs, but I'm surprised by t= he > >> time needed to do that conversion. > >>=20 > >> The first FS is on a 500GiB block device, and btrfs-convert is run= ning > >> since more than 48h : > >> root 1978 25.6 47.7 748308 732556 ? D Feb18 944:44 > >> btrfs-convert /dev/vg-backup/backup > >>=20 > >> The second is on a 340GiB block device, and the processing time is > >> similar : root 30192 5.2 3.0 73180 61520 pts/0 R Feb1= 8 > >> 121:04 btrfs-convert /dev/vg-balor/backup > >>=20 > >>=20 > >> Is it "normal", or is there a problem during the processing ? > >>=20 > >> Thanks, > >> Olivier > >=20 > > How much free space did those FS have? How many files were on them = (was > > they dominated by small or large files)? > >=20 > > Regards, >=20 > Lot of small files (like compressed email from Maildir), and lot of > hardlinks, and probably low free space (near 15% I suppose). >=20 >=20 > So I think I have my answer :) >=20 Yes, this is probably the worst possible combination. Plese keep us updated. Just to have exact numbers for new users. Regards, --=20 Hubert Kario QBS - Quality Business Software 02-656 Warszawa, ul. Ksawer=F3w 30/85 tel. +48 (22) 646-61-51, 646-74-24 www.qbs.com.pl -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html