Re: [gentoo-user] mounting USB stick
070820 Mick wrote: On Sunday 19 August 2007, Philip Webb wrote: I copied a series of dirs to my USB stick as each one was done, they took successively longer to finish, tho' they were all roughly the same size. It must be something to do with the way the data is laid out on the stick. Is this the case when you sync after copying each dir to the stick? I haven't tried doing that (it wb a bit of a pain in ordinary usage): what difference might it make ? -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
On Monday 20 August 2007, Philip Webb wrote: 070820 Mick wrote: On Sunday 19 August 2007, Philip Webb wrote: I copied a series of dirs to my USB stick as each one was done, they took successively longer to finish, tho' they were all roughly the same size. It must be something to do with the way the data is laid out on the stick. Is this the case when you sync after copying each dir to the stick? I haven't tried doing that (it wb a bit of a pain in ordinary usage): what difference might it make ? I've noticed on some CF devices IO buffering caused increasingly longer copying times. This was over an older 1.1 interface, not the faster USB2.0. I never bottomed out if this has something to do with the CF onboard controller or the PC USB controller. Small files went across fine, it was the larger 700MB+ that started splattering. Ultimately, the copying would complete, but take increasingly longer to get there. Running sync will write all cached data into the card. Anyway, just a thought to see if loading the cache with successive files causes it. -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] mounting USB stick
070818 Florian Philipp wrote: Am Samstag 18 August 2007 04:51:50 schrieb Crayon Shin Chan: On Saturday 18 August 2007 06:30, Philip Webb wrote: I've successfully mounted the stick copied a file onto it: it seems you have to 'umount' it before the file is really stored. For performance reasons a write-cache is used - changes to the filesystem aren't effected immediately. Issuing a 'sync' command or 'umount' will force the changes to be written immediately. It's not only for performance reasons. This behavior saves the stick from unnecessary writes to the FAT or temporary files which would otherwise decrease its lifespan. I've also noticed that it seems to take noticeably longer to copy files, the more data is already on the stick: can anyone explain ? -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
Hello Philip Webb, I've also noticed that it seems to take noticeably longer to copy files, the more data is already on the stick: can anyone explain ? Fragmentation? -- Neil Bothwick Miracle worker, Doctor! I'm a dammit, not a jim.. no, scratch that... signature.asc Description: PGP signature
Re: [gentoo-user] mounting USB stick
Am Sonntag 19 August 2007 20:13:14 schrieb Neil Bothwick: Hello Philip Webb, I've also noticed that it seems to take noticeably longer to copy files, the more data is already on the stick: can anyone explain ? Fragmentation? I don't think so. Because there are no moving parts, the latency is extremely low. Fragmentation should not have any influence. signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] mounting USB stick
070819 Florian Philipp wrote: Am Sonntag 19 August 2007 20:13:14 schrieb Neil Bothwick: Hello Philip Webb, I've also noticed that it seems to take noticeably longer to copy files, the more data is already on the stick: can anyone explain ? Fragmentation? Because there are no moving parts, the latency is extremely low. Fragmentation should not have any influence. No, it can't be fragmentation ! I copied a series of dirs to the stick as each one was done, they took successively longer to finish, tho' they were all roughly the same size. It must be something to do with the way the data is laid out on the stick. -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
Am Samstag 18 August 2007 04:51:50 schrieb Crayon Shin Chan: On Saturday 18 August 2007 06:30, Philip Webb wrote: I've successfully mounted the stick copied a file onto it: it seems you have to 'umount' it before the file is really stored. For performance reasons a write-cache is used - changes to the filesystem aren't effected immediately. Issuing a 'sync' command or 'umount' will force the changes to be written immediately. It's not only for performance reasons. This behavior saves the stick from unnecessary writes to the FAT or temporary files which would otherwise decrease its lifespan. signature.asc Description: This is a digitally signed message part.
[EMAIL PROTECTED]: Re: [gentoo-user] mounting USB stick]
- Forwarded message from Philip Webb [EMAIL PROTECTED] - From: Philip Webb [EMAIL PROTECTED] Subject: Re: [gentoo-user] mounting USB stick Date: Thu, 16 Aug 2007 15:33:26 -0400 To: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org User-Agent: Mutt/1.5.16 (2007-06-09) X-Spam-Level: 070816 Florian Philipp wrote: USB-sticks appear as SCSI drives. That means their block device is /dev/sda, /dev/sdb etc. Usually you want to mount their first (and only) partition, i.e. /dev/sda1 or /dev/sdb1. If there is no such block device, check if usb mass storage is enabled in your kernel. Yes, that's it presumably : # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' # may also be needed; see USB_STORAGE Help for more information # CONFIG_USB_STORAGE is not set So I'll need to compile a new kernel, ie 2.6.20 - 2.6.22 , enable USB storage. Thanks for the hint. -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list - End forwarded message - Hi, you don't need to compile a new kernel, at least you don't need to install and compile kernel 2.6.20. You don't need because USB Mass Storage feature is supported by kernel 2.6.20. SO YOU DON'T NEED DO INSTALL AND COMPILE KERNEL 2.6.20 BUT YOU NEED TO ENABLE USB MASS STORAGE FEATURE IN YOUR INSTALLED KERNEL. Bye -- Linux is only free if your time has no value Please avoid sending me Word or PowerPoint attachments. See http://www.gnu.org/philosophy/no-word-attachments.html -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
070816 Philip Webb wrote: 070816 Florian Philipp wrote: USB-sticks appear as SCSI drives. That means their block device is /dev/sda, /dev/sdb etc. check if usb mass storage is enabled in your kernel. Yes, that's it presumably : So I'll need to compile a new kernel, ie 2.6.20 - 2.6.22 , enable USB storage. Thanks for the hint. Thanks again for all the advice. This is written on the new kernel Gentoo-sources-2.6.22-r2 (which has just gone stable) with 'usb mass storage' enabled. I've successfully mounted the stick copied a file onto it: it seems you have to 'umount' it before the file is really stored. Also, 'df' continues to show it mounted after 'umount /dev/sdb1', but deletes it after 'umount /z/usb' (the dir I mounted it under): this seems a new distinction, as either have worked with other devices. I'm amazed how small the stick is: a spy could easily swallow it (grin). -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
On Saturday 18 August 2007 06:30, Philip Webb wrote: I've successfully mounted the stick copied a file onto it: it seems you have to 'umount' it before the file is really stored. For performance reasons a write-cache is used - changes to the filesystem aren't effected immediately. Issuing a 'sync' command or 'umount' will force the changes to be written immediately. Also, 'df' continues to show it mounted after 'umount /dev/sdb1', but deletes it after 'umount /z/usb' (the dir I mounted it under): this seems a new distinction, as either have worked with other devices. Unmounting either the device or the mountpoint should be the same. Maybe you have unwittingly mounted the device twice? I'm amazed how small the stick is: a spy could easily swallow it (grin). The size of usb plug is the limiting factor. Look how small the micro-sd cards are! -- Crayon -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
On 8/16/07, Philip Webb [EMAIL PROTECTED] wrote: I've just bought my first USB memory stick (Kingmax 1 GB ). When I insert it into a USB slot, devices appear : /dev/usbdev1.4_ep00 ep01 ep82 ep83 but when I try to mount it ( /z/usb is an unused dir in my filesystem): mount /dev/usbdev1.4_ep00 /z/usb it tells me (similarly for the other 3 devices): mount: /dev/usbdev1.4_ep00 is not a block device I had bookmarked the Gentoo Howto Wiki re USB sticks, but as everyone knows, they're down at the moment. Do I need to format it, as if it were a hard drive ? I don't want to damage my new toy. Can anyone tell me what to do next ? Your USB stick should be a device like sdX where X is an letter. Mine shows as sdb cause my Sata HD is sda, check dmesg and see what it tells you, it should echo the device. -- Daniel da Veiga Computer Operator - RS - Brazil -BEGIN GEEK CODE BLOCK- Version: 3.1 GCM/IT/P/O d-? s:- a? C++$ UBLA++ P+ L++ E--- W+++$ N o+ K- w O M- V- PS PE Y PGP- t+ 5 X+++ R+* tv b+ DI+++ D+ G+ e h+ r+ y++ --END GEEK CODE BLOCK-- -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
Am Donnerstag 16 August 2007 21:03:18 schrieb Philip Webb: I've just bought my first USB memory stick (Kingmax 1 GB ). When I insert it into a USB slot, devices appear : /dev/usbdev1.4_ep00 ep01 ep82 ep83 but when I try to mount it ( /z/usb is an unused dir in my filesystem): mount /dev/usbdev1.4_ep00 /z/usb it tells me (similarly for the other 3 devices): mount: /dev/usbdev1.4_ep00 is not a block device I had bookmarked the Gentoo Howto Wiki re USB sticks, but as everyone knows, they're down at the moment. Do I need to format it, as if it were a hard drive ? I don't want to damage my new toy. Can anyone tell me what to do next ? -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto USB-sticks appear as SCSI drives. That means their block device is /dev/sda, /dev/sdb etc. Usually you want to mount their first (and only) partition, i.e. /dev/sda1 or /dev/sdb1 If there is no such block device, check if usb mass storage is enabled in your kernel. signature.asc Description: This is a digitally signed message part.
[gentoo-user] mounting USB stick
I've just bought my first USB memory stick (Kingmax 1 GB ). When I insert it into a USB slot, devices appear : /dev/usbdev1.4_ep00 ep01 ep82 ep83 but when I try to mount it ( /z/usb is an unused dir in my filesystem): mount /dev/usbdev1.4_ep00 /z/usb it tells me (similarly for the other 3 devices): mount: /dev/usbdev1.4_ep00 is not a block device I had bookmarked the Gentoo Howto Wiki re USB sticks, but as everyone knows, they're down at the moment. Do I need to format it, as if it were a hard drive ? I don't want to damage my new toy. Can anyone tell me what to do next ? -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
070816 Daniel da Veiga wrote: On 8/16/07, Philip Webb [EMAIL PROTECTED] wrote: I've just bought my first USB memory stick (Kingmax 1 GB ). When I insert it into a USB slot, devices appear : /dev/usbdev1.4_ep00 ep01 ep82 ep83 but when I try to mount it ( /z/usb is an unused dir in my filesystem): mount /dev/usbdev1.4_ep00 /z/usb it tells me (similarly for the other 3 devices): mount: /dev/usbdev1.4_ep00 is not a block device Your USB stick should be a device like sdX where X is an letter. Mine shows as sdb cause my Sata HD is sda, check dmesg and see what it tells you, it should echo the device. Thanks for you very prompt response. Dmesg says usb 1-1: new high speed USB device using ehci_hcd and address 2 usb 1-1: configuration #1 chosen from 1 choice usb 1-1: USB disconnect, address 2 usb 1-1: new high speed USB device using ehci_hcd and address 3 usb 1-1: configuration #1 chosen from 1 choice usb 1-1: USB disconnect, address 3 usb 1-2: new high speed USB device using ehci_hcd and address 4 usb 1-2: configuration #1 chosen from 1 choice usb 1-2: USB disconnect, address 4 which represents inserting removing the stick in 2 USB slots. There's no sign of 'sda' or similar in /dev while it's inserted nor is there anything like /dev/ehci_hcd . -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
070816 Florian Philipp wrote: USB-sticks appear as SCSI drives. That means their block device is /dev/sda, /dev/sdb etc. Usually you want to mount their first (and only) partition, i.e. /dev/sda1 or /dev/sdb1. If there is no such block device, check if usb mass storage is enabled in your kernel. Yes, that's it presumably : # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' # may also be needed; see USB_STORAGE Help for more information # CONFIG_USB_STORAGE is not set So I'll need to compile a new kernel, ie 2.6.20 - 2.6.22 , enable USB storage. Thanks for the hint. -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] mounting USB stick
Am Donnerstag 16 August 2007 21:33:26 schrieb Philip Webb: 070816 Florian Philipp wrote: USB-sticks appear as SCSI drives. That means their block device is /dev/sda, /dev/sdb etc. Usually you want to mount their first (and only) partition, i.e. /dev/sda1 or /dev/sdb1. If there is no such block device, check if usb mass storage is enabled in your kernel. Yes, that's it presumably : # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' # may also be needed; see USB_STORAGE Help for more information # CONFIG_USB_STORAGE is not set So I'll need to compile a new kernel, ie 2.6.20 - 2.6.22 , enable USB storage. Thanks for the hint. Or you could just start make menuconfig in your current kernel's source, add everything as a module, make make modules_install update-modules and load the modules with modprobe. signature.asc Description: This is a digitally signed message part.
