[lkml]   [2004]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: questions about io scheduler

    Mike Fedyk wrote:
    > Nick Piggin wrote:
    >> Kyle Wong wrote:
    >>> 2. Does io scheduler works with md RAID? Correct me if I'm wrong,
    >>> io-schedular <--> md driver <--> harddisks.
    >> It goes md driver -> io schedulers -> hard disks.
    > There is an IO scheduler per disk.
    > So MD submits the data to each disk through the IO scheduler.
    > This allows you to have the heads on each disk in the array at different
    > locations, and helps keep response times lower for seeky loads.

    Say you've got a RAID1. In this case, MD could send the read request to
    either device. How does it decide which one to use?

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:01    [W:0.019 / U:2.680 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site