[cc back to the list, again] You should umount the filesystem to ensure that doesn't happen before unplugging it.
Sync option is really bad for flash-based storage (as you know it can only be written to so many times). On Sat, 18 Feb 2006, Yann Le [ISO-8859-1] Doaré wrote: > Yes, with nosync option the speed is OK ! > Why ??? > If the usb key is mounted with nosync option, data can be lost if the > user unplug it ... ? > > Le samedi 18 février 2006 à 10:54 -0800, Stephen J. Gowdy a écrit : > > Try nosync. > > > > On Sat, 18 Feb 2006, Yann Le [ISO-8859-1] Doaré wrote: > > > > > Yes, VFAT filesytems are mounted with sync option. > > > > > > > > > Le vendredi 17 février 2006 à 17:50 -0800, Stephen J. Gowdy a écrit : > > > > Could you have the sync option on on your filesystem? > > > > > > > > On Fri, 17 Feb 2006, Yann Le [ISO-8859-1] Doaré wrote: > > > > > > > > > Hi, > > > > > > > > > > I build kernels for my distro (http://linuxconsole.org), but there is > > > > > a > > > > > mistake I can't resolve : > > > > > > > > > > Writing to usb-disks is very slow (~5k/s) (Buring to USB CDROM is OK). > > > > > I tried kernels 2.4.30, 2.4.32, 2.6.15.1 ... without success ... but > > > > > ubuntu writes to 60k/s > > > > > > > > > > here is my /proc/bus/usb/devices : > > > > > > > > > > T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 > > > > > B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 > > > > > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > > > > > P: Vendor=0000 ProdID=0000 Rev= 2.06 > > > > > S: Manufacturer=Linux 2.6.15.1 uhci_hcd > > > > > S: Product=UHCI Host Controller > > > > > S: SerialNumber=0000:00:1f.4 > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA > > > > > I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > > > > > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > > > > > > > > > T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 > > > > > B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 > > > > > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > > > > > P: Vendor=0000 ProdID=0000 Rev= 2.06 > > > > > S: Manufacturer=Linux 2.6.15.1 uhci_hcd > > > > > S: Product=UHCI Host Controller > > > > > S: SerialNumber=0000:00:1f.2 > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA > > > > > I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > > > > > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > > > > > > > > > T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 > > > > > D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > > > > > P: Vendor=10d6 ProdID=1100 Rev= 1.00 > > > > > S: Product=USB 2.0(FS) FLASH DISK > > > > > S: SerialNumber=USB 2.0(FS) FLASH DISK > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA > > > > > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 > > > > > Driver=usb-storage > > > > > E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > > > > E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > > > > > > > > > and the /proc/bus/usb/devices booting from UBUNTU LIVE CD (writing is > > > > > OK > > > > > with that disto) > > > > > > > > > > T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 > > > > > B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 > > > > > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > > > > > P: Vendor=0000 ProdID=0000 Rev= 2.06 > > > > > S: Manufacturer=Linux 2.6.12-9-386 uhci_hcd > > > > > S: Product=Intel Corporation 82801BA/BAM USB (Hub #2) > > > > > S: SerialNumber=0000:00:1f.4 > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA > > > > > I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > > > > > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > > > > > > > > > T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 > > > > > B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 > > > > > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > > > > > P: Vendor=0000 ProdID=0000 Rev= 2.06 > > > > > S: Manufacturer=Linux 2.6.12-9-386 uhci_hcd > > > > > S: Product=Intel Corporation 82801BA/BAM USB (Hub #1) > > > > > S: SerialNumber=0000:00:1f.2 > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA > > > > > I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > > > > > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > > > > > > > > > T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 > > > > > D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > > > > > P: Vendor=10d6 ProdID=1100 Rev= 1.00 > > > > > S: Product=USB 2.0(FS) FLASH DISK > > > > > S: SerialNumber=USB 2.0(FS) FLASH DISK > > > > > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA > > > > > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 > > > > > Driver=usb-storage > > > > > E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > > > > E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > > > > > > > > > > > > > > What is wrong ? > > > > > > > > > > Greetings. > > > > > > > > > > Yann Le Doaré > > > > > > > > > > > > > -- > > > > /------------------------------------+-------------------------\ > > > > |Stephen J. Gowdy | SLAC, MailStop 34, | > > > > |http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, | > > > > |http://calendar.yahoo.com/gowdy | Menlo Park CA 94025, USA | > > > > |EMail: [EMAIL PROTECTED] | Tel: +1 650 926 3144 | > > > > \------------------------------------+-------------------------/ > > > > > > > -- > > /------------------------------------+-------------------------\ > > |Stephen J. Gowdy | SLAC, MailStop 34, | > > |http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, | > > |http://calendar.yahoo.com/gowdy | Menlo Park CA 94025, USA | > > |EMail: [EMAIL PROTECTED] | Tel: +1 650 926 3144 | > > \------------------------------------+-------------------------/ > -- /------------------------------------+-------------------------\ |Stephen J. Gowdy | SLAC, MailStop 34, | |http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, | |http://calendar.yahoo.com/gowdy | Menlo Park CA 94025, USA | |EMail: [EMAIL PROTECTED] | Tel: +1 650 926 3144 | \------------------------------------+-------------------------/ ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. 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