http://bugzilla.novell.com/show_bug.cgi?id=617437 http://bugzilla.novell.com/show_bug.cgi?id=617437#c0 Summary: umount ext3 or ext4 10x slower than ext2 Classification: openSUSE Product: openSUSE 11.3 Version: Factory Platform: x86-64 OS/Version: Other Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: lnussel@novell.com QAContact: qa@suse.de Found By: --- Blocker: --- consider the following script which creates a file system in a sparse file, loop mounts it, copies some data and umounts the file again: #!/bin/bash -xe img="$1" rm -f "$img" dd if=/dev/zero of=$img bs=1G count=0 seek=4 mkfs.ext2 -q -F "$img" mount -o loop "$img" /mnt dd if=/dev/zero of=/mnt/file bs=1M count=300 time umount /mnt On my host the umount call takes ~0.8 seconds with ext2 and >10 seconds if the script is modified to create ext3 or ext4. That makes the setup for local package building with kvm painfully slow. I don't have exact numbers but on 11.2 there was no such huge delay when umounting ext3 images. FWIW the file system that hosts the image also is ext3 here (same partition was used on 11.2). -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.