Re: dump of ext3 very slow from dm LV

2007-07-10 Thread Phillip Susi
Ross Vandegrift wrote: I'm seeing speeds in the range of 3-4MiB/s. If I increase dump's blocksize to 128KiB records, speed jumps up to about 20KiB/s, which is better but still frustratingly slow. Going to 1024KiB gets me about 28MiB/s. Today I loop mounted a file on my LVM, filled it up with so

dump of ext3 very slow from dm LV

2007-06-30 Thread Ross Vandegrift
Hello everyone, A while back I asked about this on the LVM mailing list, but didn't receive a response. Am revisiting it now, so would like a broader audience. I've run into some substantial read slowness when using dump or tar to backup filesystems that are stored on LVM2 LVs. All of my tests