Re: Troubleshooting pendrive ext2fs

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Discovered the problem:

The pendrive is a counterfeit. VID=1043 PDI=8012 does not correspond to
Kingston (iChips ???).

Somehow it is capable of storing 16GBytes of data (I recorded a file and
then unconnected the pendrive and reconnected it and verified the
content via cat $FILE | md5sum > /tmp/check.md5...

Device readily sent to police, so they'll ask the store how it appeared
there.

Sorry for the inconvenience.

CdAB

Em 18-08-2009 19:18, Casimiro de Almeida Barreto escreveu:
> Hello,
>
> I've trouble creating an ext2/ext3/ext4 file system in a 64GBytes pendrive.
>
> The device appears at /proc/bus/usb/devices as:
>
> T:  Bus=01 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#=  4 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=1043 ProdID=8012 Rev= 1.00
> S:  Manufacturer=Generic
> S:  Product=Flash Disk
> C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
> I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
> E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>
> It's partioned as:
>
> Disk /dev/sdd: 67.1 GB, 67108864512 bytes
> 64 heads, 32 sectors/track, 64000 cylinders
> Units = cilindros of 2048 * 512 = 1048576 bytes
> Disk identifier: 0x4a26a3ed
>
> Dispositivo Boot      Start         End      Blocks   Id  System
> /dev/sdd1               1       64000    65535984   83  Linux
>
> And raw partition table data is:
>
> Disk /dev/sdd: 64 heads, 32 sectors, 64000 cylinders
>
> Nr AF  Hd Sec  Cyl  Hd Sec  Cyl     Start      Size ID
>  1 00   1   1    0  63  32 1023         32  131071968 83
>  2 00   0   0    0   0   0    0          0          0 00
>  3 00   0   0    0   0   0    0          0          0 00
>  4 00   0   0    0   0   0    0          0          0 00
>
> Disk was formatted with the following command:
>
> [root@localhost ~]# mkfs.ext2 -L kingston -M /media/kingston -O
> large_file,extent /dev/sdd1
> mke2fs 1.41.4 (27-Jan-2009)
> Filesystem label=kingston
> OS type: Linux
> Block size=4096 (log=2)
> Fragment size=4096 (log=2)
> 4096000 inodes, 16383996 blocks
> 819199 blocks (5.00%) reserved for the super user
> First data block=0
> Maximum filesystem blocks=0
> 500 block groups
> 32768 blocks per group, 32768 fragments per group
> 8192 inodes per group
> Superblock backups stored on blocks:
>     32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
>     4096000, 7962624, 11239424
>
> Writing inode tables: done                           
> Writing superblocks and filesystem accounting information: done
>
> This filesystem will be automatically checked every 33 mounts or
> 180 days, whichever comes first.  Use tune2fs -c or -i to override.
>
> And then checked:
>
> # fsck -f -v /dev/sdd1
>
> Resulting in:
>
> [root@localhost ~]# fsck -v -f /dev/sdd1
> fsck 1.41.4 (27-Jan-2009)
> e2fsck 1.41.4 (27-Jan-2009)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Block bitmap differences:  +(32768--34306) +(65536--66049)
> +(98304--99842) +(131072--131585) +(163840--165378) +(196608--197121)
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> +(14385152--14385665) +(14417920--14418433) +(14450688--14451201)
> +(14483456--14483969) +(14516224--14516737) +(14548992--14549505)
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> +(15073280--15073793) +(15106048--15106561) +(15138816--15139329)
> +(15171584--15172097) +(15204352--15204865) +(15237120--15237633)
> +(15269888--15270401) +(15302656--15303169) +(15335424--15335937)
> +(15368192--15368705) +(15400960--15401473) +(15433728--15434241)
> +(15466496--15467009) +(15499264--15499777) +(15532032--15532545)
> +(15564800--15565313) +(15597568--15598081) +(15630336--15630849)
> +(15663104--15663617) +(15695872--15696385) +(15728640--15729153)
> +(15761408--15761921) +(15794176--15794689) +(15826944--15827457)
> +(15859712--15860225) +(15892480--15892993) +(15925248--15925761)
> +(15958016--15958529) +(15990784--15991297) +(16023552--16024065)
> +(16056320--16056833) +(16089088--16089601) +(16121856--16122369)
> +(16154624--16155137) +(16187392--16187905) +(16220160--16220673)
> +(16252928--16253441) +(16285696--16286209) +(16318464--16318977)
> +(16351232--16351745)
> Fix<y>?
>
> If I fsck without -f, /dev/sdd1 will not be checked (it's marked as
> clean)...
>
> Then, if I ignore the errors, mount /dev/sdd1 at /media/kingston and do:
>
> # PREFIX=/media/kingston/`date +%y%m%d%H%M`
> # tar cjPf - /home /opt /usr/local | gpg -c -a -z0 --cipher-algo=aes256
> -o ${PREFIX}.asc
>
> It will create the backup file.
>
> But, if I try:
>
> # md5sum ${PREFIX}.asc > ${PREFIX}.md5
>
> it will complain that "cannot write to device"...
>
> I checked the device with:
>
> # badblocks -w -v /dev/sdd1 and it went through without finding errors.
>
> What's going wild with this particular device???
>
>
>   


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