> 20 февр. 2016 г., в 1:31, Zdenek Kabelac <[email protected]> > написал(а): > > Dne 19.2.2016 v 19:40 Lentes, Bernd napsal(a): >> Hi, >> >> i have a script in which i invoke lvremove and lvcreate. With lvremove i >> don't have proplems but with lvcreate. >> I'm redirecting stdout and stderr to a file because the script is executed >> by cron and i'd like to have a look afterwards if everything went fine. >> The command is: lvcreate -v -L 25G -n lv_root_snapshot -s vg1/lv_root > >> lvcreate_with_redirection.log 2>&1. Shell does not accept further commands >> afterwards, but host still responds to ping. You can have a look on >> lvcreate_with_redirection.log here: >> https://hmgubox.helmholtz-muenchen.de:8001/d/b4c7025bac/ . >> System seems to stop while suspending. >> >> last lines of the log: >> ====================================================== >> >> ... >> Creating vg1-lv_root_snapshot-cow >> Loading vg1-lv_root_snapshot-cow table (252:3) >> Resuming vg1-lv_root_snapshot-cow (252:3) >> Loading vg1-lv_root_snapshot table (252:1) >> Suspending vg1-lv_root (252:0) with filesystem sync with device flush >> ====================================================== > > > Unfortunately you can't do that if you log to the SAME volume you are > suspending - i.e. you run your command from your root volume > which is also suspended. > > We could likely 'buffer' the output while in suspend mode, > and throw out the output later - but as this is seen as 'debug' help it's > assume user takes care and user place for logging which doesn't block. > > So if you want to see logs - use something tmpfs location for it.
Why this happen ? I thought that operations with page cache will not be suspended on fsfreeze(). > > Regards > > > Zdenek > > _______________________________________________ > linux-lvm mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ _______________________________________________ linux-lvm mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
