On wed, 12 Dec 2012 23:26:02 -0500, Sylvain Alain wrote: > Hi guys, I noticed that now my snapshot take a long time to process : > > sylvain@gentootux ~ $ df -h > Sys. de fichiers Taille Utilisé Dispo Uti% Monté sur > rootfs 112G 4,0G 103G 4% / > /dev/sda4 112G 4,0G 103G 4% / > tmpfs 7,9G 596K 7,9G 1% /run > udev 10M 0 10M 0% /dev > none 7,9G 0 7,9G 0% /dev/shm > cgroup_root 10M 0 10M 0% /sys/fs/cgroup > tmpfs 12G 0 12G 0% /var/tmp/portage > /dev/sdb2 224G 52G 173G 23% /mnt/win_c > /dev/sdc2 912G 412G 500G 46% /mnt/win_d > > sylvain@gentootux ~ $ su - > Mot de passe : > > gentootux ~ # mount /dev/sda4 -o > noatime,ssd,discard,compress=lzo,noacl,space_cache,subvolid=0 > /mnt/disklayout/ > > gentootux ~ # cd /mnt/disklayout/ > > gentootux disklayout # ls > @backup @racine > > gentootux disklayout # time btrfs subvolume delete @backup > Delete subvolume '/mnt/disklayout/@backup' > > real 0m0.020s > user 0m0.001s > sys 0m0.002s > gentootux disklayout # ls > @racine > > gentootux disklayout # time btrfs subvolume snapshot @racine @backup > Create a snapshot of '@racine' in './@backup' > > real 6m9.122s > user 0m0.000s > sys 0m0.523s > > more then 6 minutes to snapshot 4 gigs of data, that's twice slower > then kernel 3.6. > > Is there any log or something that I look after ? > > sylvain@gentootux ~ $ sudo dmesg | grep -i btrfs > [ 0.371528] Btrfs loaded > [ 0.784593] btrfs: disk space caching is enabled > [ 0.788680] Btrfs detected SSD devices, enabling SSD mode > [ 0.789757] VFS: Mounted root (btrfs filesystem) readonly on device 0:12. > [ 4.881241] btrfs: use ssd allocation scheme > [ 4.881244] btrfs: use lzo compression > [ 4.881245] btrfs: disk space caching is enabled > [ 496.982616] btrfs: unlinked 14 orphans
What kind of kernel did you use? mainline kernel? Thanks Miao -- 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
