On Friday 30 of March 2012 21:23:52 Olivier Bonvalet wrote: > Le 22/02/2012 17:55, Olivier Bonvalet a écrit : > > So, the btrfs-convert for the smaller drive is done... after near 5 > > days. Which stats can I give you ? > > > > It's a 340GB LVM block device, and "btrfs filesystem df /backup/" say > > that : > > > > Data: total=225.97GB, used=181.94GB > > System: total=32.00MB, used=24.00KB > > Metadata: total=111.00GB, used=91.56GB > > > > > > If I mount the ext2_saved/image copy, I can see 257GB of data (78% of > > the block device used), with 17M of inodes. > > > > > > The other btrfs-convert stay running. > > Well, the second one is still running : > > root! backup:~# uptime > 21:17:43 up 41 days, 19:59, 1 user, load average: 2.06, 1.90, 1.88 > > > root! backup:~# ps auxw | grep btrfs > root 1978 25.6 74.3 1269072 1141212 ? D Feb18 15421:50 > btrfs-convert /dev/vg-backup/backup
Wow, that's /long/... > root! backup:~# iostat -k > Linux 2.6.42.3-dae-xen (backup) 30/03/2012 _x86_64_ (2 CPU) > > avg-cpu: %user %nice %system %iowait %steal %idle > 10,54 0,06 2,36 54,21 0,09 32,74 > > Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn > xvda 724,70 175,50 3181,13 634342597 11498370400 > xvdy 0,00 0,00 0,00 1381 0 > xvdz 0,00 0,00 0,00 4065 0 > dm-0 0,49 3,22 1,78 11627497 6435028 > dm-1 837,57 171,69 3178,57 620593936 11489105416 > dm-2 0,34 0,59 0,78 2120800 2830584 > > 11498370400 kB written, so, 11TB written to convert a 518GB partition ? > > > but more important : is it safe to abort the process ? I'm quite sure you won't get a mountable filesystem, either ext or btrfs. btrfs-convert has to move at least some ext3 metadata blocks, so ext FS will be broken. I don't know if btrfs-convert writes whole btrfs tree and then updates it as it finds new inodes in ext3 or just goes over it sequentially. But either way, you'll get at best btrfs with lots of files missing. So the short answer is: no. Regards, -- Hubert Kario QBS - Quality Business Software 02-656 Warszawa, ul. Ksawerów 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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
