lkml.org 
[lkml]   [2009]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 0/8][RFC] IO latency/throughput fixes


    On Tue, 7 Apr 2009, Mark Lord wrote:
    >
    > What happens with ext3 "writeback", and ext4 "whatever",
    > when one does the quickie reboot method:
    >
    > ALT-SYSRQ-S ALT-SYSRQ-U ALT-SYSRQ-S ALT-SYSRQ-B
    >
    > ???

    Since 's' syncs (I think 'u' does too, as part of making things
    read-only), the data blocks will be on disk after the boot regardless of
    any other ordering.

    Of course, it will leave all your lock-files files alone, and I can almost
    guarantee that some daemons (read: "NetworkManager") will then fail on the
    next boot because they think they are already running.

    Linus


    \
     
     \ /
      Last update: 2009-04-07 16:43    [W:0.021 / U:58.460 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site