$ dmesg...usb 2-5: new high speed USB device using ehci_hcd and address 3usb 2-5: New USB device found, idVendor=05e3, idProduct=0712usb 2-5: New USB device strings: Mfr=0, Product=1, SerialNumber=2usb 2-5: Product: USB Storageusb 2-5: SerialNumber: 000000009225usb 2-5: configuration #1 chosen from 1 choiceInitializing USB Mass Storage driver...scsi5 : SCSI emulation for USB Mass Storage devicesusbcore: registered new interface driver usb-storageUSB Mass Storage support registered.usb-storage: device found at 3usb-storage: waiting for device to settle before scanningusb-storage: device scan completescsi 5:0:0:0: Direct-Access Generic STORAGE DEVICE 9228 PQ: 0 ANSI: 0sd 5:0:0:0: Attached scsi generic sg2 type 0sd 5:0:0:0: [sdb] 3932160 512-byte hardware sectors: (2.01 GB/1.87 GiB)sd 5:0:0:0: [sdb] Write Protect is offsd 5:0:0:0: [sdb] Mode Sense: 03 00 00 00sd 5:0:0:0: [sdb] Assuming drive cache: write throughsd 5:0:0:0: [sdb] Assuming drive cache: write through sdb: sdb1sd 5:0:0:0: [sdb] Attached SCSI removable diskSELinux: initialized (dev sdb1, type vfat), uses genfs_contexts
$ cat /proc/mounts | grep sdb/dev/sdb1 /media/166B-AF93 vfat rw,nosuid,nodev,relatime,uid=500,gid=500,fmask=0022,dmask=0077,codepage=cp437,iocharset=ascii,utf8,flush 0 0
$dmesg[104103.587603] npviewer.bin[6112]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000ff835c2c error 14[104126.762564] usb 1-3: new high speed USB device using ehci_hcd and address 5[104126.925516] usb 1-3: configuration #1 chosen from 1 choice[104126.925819] scsi8 : SCSI emulation for USB Mass Storage devices[104126.925985] usb-storage: device found at 5[104126.925988] usb-storage: waiting for device to settle before scanning[104131.924050] usb-storage: device scan complete[104131.924593] scsi 8:0:0:0: Direct-Access USB FLASH DRIVE PMAP PQ: 0 ANSI: 0 CCS[104131.925095] sd 8:0:0:0: Attached scsi generic sg2 type 0[104134.510988] sd 8:0:0:0: [sdb] 4030464 512-byte logical blocks: (2.06 GB/1.92 GiB)[104134.519926] sd 8:0:0:0: [sdb] Write Protect is off[104134.519934] sd 8:0:0:0: [sdb] Mode Sense: 23 00 00 00[104134.519938] sd 8:0:0:0: [sdb] Assuming drive cache: write through[104134.527052] sd 8:0:0:0: [sdb] Assuming drive cache: write through[104134.527059] sdb: sdb1[104134.535930] sd 8:0:0:0: [sdb] Assuming drive cache: write through[104134.535937] sd 8:0:0:0: [sdb] Attached SCSI removable disk[104550.497636] npviewer.bin[11471]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000fff197fc error 14[104654.454707] npviewer.bin[12163]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000ffc72fdc error 14[104691.993608] npviewer.bin[12341]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000fff1cacc error 14[104999.168716] npviewer.bin[12513]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000ff8f90ac error 14[105582.764132] usb 1-3: USB disconnect, address 5[105582.766813] FAT: bread failed in fat_clusters_flush[105582.893697] FAT: bread failed in fat_clusters_flush[105582.894127] FAT: bread failed in fat_clusters_flush[105582.895113] FAT: bread failed in fat_clusters_flush[105584.559648] deluge[2079]: segfault at 0 ip 00007f2ccf50f4e0 sp 00007fffe2b44c10 error 4 in libgobject-2.0.so.0.2200.3[7f2ccf4e6000+44000][177401.995572] mmc0: new SD card at address aaaa[177401.995838] mmcblk0: mmc0:aaaa SU02G 1.84 GiB [177401.995906] mmcblk0: p1[179672.010142] b44: eth0: Link is down.[179679.012720] b44: eth0: Link is up at 100 Mbps, full duplex.[179679.012727] b44: eth0: Flow control is off for TX and off for RX.[181171.811920] npviewer.bin[15785]: segfault at ff999ed8 ip 00000000ff999ed8 sp 00000000ffc745dc error 14[181494.822756] UDP: short packet: From 0.0.0.0:24827 25649/109 to 0.0.0.0:6881[184778.498119] mmc0: card aaaa removed[187077.982584] usb 1-3: new high speed USB device using ehci_hcd and address 6[187078.135810] usb 1-3: configuration #1 chosen from 1 choice[187078.137756] scsi9 : SCSI emulation for USB Mass Storage devices[187078.138025] usb-storage: device found at 6[187078.138034] usb-storage: waiting for device to settle before scanning[187083.140394] usb-storage: device scan complete[187083.152986] scsi 9:0:0:0: Direct-Access Kingston DataTraveler 2.0 PMAP PQ: 0 ANSI: 0 CCS[187083.223166] sd 9:0:0:0: Attached scsi generic sg2 type 0[187085.263601] sd 9:0:0:0: [sdb] 7823360 512-byte logical blocks: (4.00 GB/3.73 GiB)[187085.285764] sd 9:0:0:0: [sdb] Write Protect is off[187085.285778] sd 9:0:0:0: [sdb] Mode Sense: 23 00 00 00[187085.285785] sd 9:0:0:0: [sdb] Assuming drive cache: write through[187085.306580] sd 9:0:0:0: [sdb] Assuming drive cache: write through[187085.306596] sdb:[187085.310552] sd 9:0:0:0: [sdb] Assuming drive cache: write through[187085.310569] sd 9:0:0:0: [sdb] Attached SCSI removable disk
$ cat /proc/mounts | grep sdb/dev/sdb /media/FLASH vfat rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,flush,errors=remount-ro 0 0
В мене теж така фігня.
В мене, наприклад, ноут не з дуже старих, 1.5 року, тобто usb 2.0 використовується.
Флешка на 4 і 8 Гб, ні одна з них повністю не заповнена, так, відсотків 70-80...
Підтримку команди DISCARD (здається так), яка звільняє блоки при видаленні файлів, зробили в лінуксі не так давно.
Я знаю, що була колись проблема з тонким кабелем, який був розрахований на USB1.1, і пристрої часом глючили чи працювали повільно через нього. В мене є один такий (йшов в комплекті з фотіком).
Тоже столкнулся с проблемой низкой скорости копирования на флешки. Но проблема решилась довольно просто. В биосе выставил выделение физической памяти для работы USB устройств.В биосе в разделе "USB Memory Type" выбрал значение "Base Memory (640K)" вместо значения по умолчанию "SHADOW".И свершилось чудо, копирование стало проходить за адекватный период времени.