-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 12/02/2011 11:48 AM, Paul Gideon Dann wrote: > Hello all, > > I've been having some trouble with USB drives in the last few > months. When copying files onto a device, the copy appears to be > instantaneous, but is clearly buffered by the kernel. If I unmount > the drive, all appears well, but then removing the device results > in corruption. > > In order to work around this, I have to run "sync" before > unmounting the device. > > Any ideas what might be causing this, or how to fix it? It would > be nice to get a *real* progress bar when copying large files, > instead of a quick flash followed by a boring minute or more of > staring at "sync". Hi, by default linux mounts the devices with the async option. You can mount using the sync option, so you are sure that the I/O is made synchronously. Just remember: "In case of media with limited number of write cycles (e.g. some flash drives) "sync" may cause life-cycle shortening." (from man 8 mount) My 2 cents - -- Timothy Redaelli drizztbsd @ irc.freenode.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBCAAGBQJO2K50AAoJEOcRMG48T4i8vvUIAJw2pkywKbISjxwZJ6kdePnH MKIzi8zBW92nzCydL1vNirEtYA6HWMJlj9IfHMheEjAfNzZy3/1FuogbeDirIucr T3VBLbCi6LPK52Rke5hQJnwCt8E8yJuzvQf+FxRGHBU+kYOF4WbJAqoj7MhllQrN rEju1wvhdYMEXZ+DUi8EBKY5HneN4Ub2VoLHNDUv47bieXN8Afqck/ykEo2/WdAW S3HXayUAUz958okdTuvafQtyNAa6jC1o2vjpSC/LSO0ZdqsrMHnf/KkXrKNvgEwh +OfGydqnFyOlMKTOJErXzAe7UX0ZuJUKZQKZ1LnUYY6r6y1q/g2xEedFkq40W1w= =QE7j -----END PGP SIGNATURE-----
