On Thu, 06 May 2010 12:46:19 +0300, Alexander Batischev wrote: > On my netbook I'm using automatic USB sticks mount through udev rules, > and I already used to running 'sync' command before unplugging stick, so > no data will be lost. But if I have few sticks inserted and some > information copying on one of them, if I run 'sync' I have to wait while > copying ends, because: > > a) sync command drops cache on disk, but copying process fill it again; > sync will work until all the caches are dropped to disks
Dunno if this would fit your needs, but there is a "sync" option for mount points you can use to ensure all removable devices (or only the ones you select) get mounted with "-o sync" flag. But I would be a bit reluctant to use that, because as per "man mount" page that flag can shorten the life of flash drive based devices with a limited number of write operations. > b) I can't unplug stick when it stops to flash because I can't be sure > that there are no more parts of cache needed to be flushed on that disk. > > So here is my question - how can I run sync for only one device? To avoid data loss you have to "umount" the device first (or just "eject" if that options is available in your system). Umount/eject operation should care the data is correctly stored in the media before powering off or unplugging the device. Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/pan.2010.05.06.13.17...@gmail.com
