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Hi !

I've go an usb 3 hard drive and i've got a problem on my xubuntu with it
(i haven't got this problem on my debian squeeze).

If i clic on  « Monter le périphétique » (mount the hard drive), i've
got this message :

« Impossible de monter "Système de fichiers 1,0 TB"

DBus error org.gtk.Private.RemoteVolumeMonitor.Failed: An operation is
already pending »

Also, i've got this with dmesg :

arno@echalotte:~$ dmesg
[...]
[ 3998.904154] usb 2-5: new high-speed USB device number 2 using ehci_hcd
[ 3999.070381] Initializing USB Mass Storage driver...
[ 3999.070545] scsi6 : usb-storage 2-5:1.0
[ 3999.070644] usbcore: registered new interface driver usb-storage
[ 3999.070646] USB Mass Storage support registered.
[ 3999.098471] usbcore: registered new interface driver uas
[ 4000.071192] scsi 6:0:0:0: Direct-Access     WD       My Passport 0740
1003 PQ: 0 ANSI: 6
[ 4000.074467] scsi 6:0:0:1: Enclosure         WD       SES Device      
1003 PQ: 0 ANSI: 6
[ 4000.080533] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 4000.080825] scsi 6:0:0:1: Attached scsi generic sg3 type 13
[ 4000.084314] sd 6:0:0:0: [sdb] Spinning up disk....ready
[ 4007.437353] sd 6:0:0:0: [sdb] 1953458176 512-byte logical blocks: (1.00
TB/931 GiB)
[ 4007.438495] sd 6:0:0:0: [sdb] Write Protect is off
[ 4007.438507] sd 6:0:0:0: [sdb] Mode Sense: 47 00 10 08
[ 4007.439344] sd 6:0:0:0: [sdb] No Caching mode page present
[ 4007.439350] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 4007.442529] sd 6:0:0:0: [sdb] No Caching mode page present
[ 4007.442542] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 4007.448249]  sdb: sdb1
[ 4007.451711] sd 6:0:0:0: [sdb] No Caching mode page present
[ 4007.451721] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 4007.451730] sd 6:0:0:0: [sdb] Attached SCSI disk
[ 4007.525713] ses 6:0:0:1: Attached Enclosure device
[ 4498.171760] EXT4-fs (sdb1): mounted filesystem with ordered data mode.
Opts: (null)
[ 4800.796083] INFO: task mount:6196 blocked for more than 120 seconds.
[ 4800.796087] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 4800.796090] mount           D c1064b79     0  6196   6195 0x00000000
[ 4800.796096]  edcfde08 00000086 edcfddc4 c1064b79 f77cb3c0 f7108cb0
c18e13c0 c18e13c0
[ 4800.796105]  e120fed1 0000043c f77cb3c0 f22c58d0 f2ce2610 00000000
00000008 00000000
[ 4800.796113]  edcfdde0 c1064c2f c18dce40 edc399b4 edc399b4 edcfdde0
c1027598 edcfddf4
[ 4800.796121] Call Trace:
[ 4800.796131]  [<c1064b79>] ? wait_on_cpu_work+0x89/0xb0
[ 4800.796135]  [<c1064c2f>] ? wait_on_work+0x8f/0x100
[ 4800.796141]  [<c1027598>] ? default_spin_lock_flags+0x8/0x10
[ 4800.796147]  [<c15748ad>] ? _raw_spin_lock_irqsave+0x2d/0x40
[ 4800.796152]  [<c128b577>] ? __disk_unblock_events+0x47/0xd0
[ 4800.796157]  [<c1572ca5>] schedule+0x35/0x50
[ 4800.796160]  [<c15745bd>] rwsem_down_failed_common+0x9d/0xf0
[ 4800.796164]  [<c1574622>] rwsem_down_write_failed+0x12/0x20
[ 4800.796169]  [<c12a5492>] call_rwsem_down_write_failed+0x6/0x8
[ 4800.796173]  [<c1573bd4>] ? down_write+0x24/0x30
[ 4800.796178]  [<c11348b0>] ? set_bdev_super+0x30/0x30
[ 4800.796181]  [<c11353db>] sget+0xcb/0x1c0
[ 4800.796185]  [<c1134880>] ? ns_test_super+0x20/0x20
[ 4800.796188]  [<c1135625>] mount_bdev+0xb5/0x1d0
[ 4800.796193]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 4800.796199]  [<c11c9f0f>] ext4_mount+0x1f/0x30
[ 4800.796203]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 4800.796206]  [<c11360b6>] mount_fs+0x36/0x180
[ 4800.796210]  [<c110277f>] ? __alloc_percpu+0xf/0x20
[ 4800.796214]  [<c114ce3e>] ? alloc_vfsmnt+0xae/0x130
[ 4800.796218]  [<c114cf51>] vfs_kern_mount+0x51/0xa0
[ 4800.796222]  [<c114e07e>] do_kern_mount+0x3e/0xe0
[ 4800.796225]  [<c114f774>] do_mount+0x164/0x200
[ 4800.796229]  [<c114fbab>] sys_mount+0x6b/0xa0
[ 4800.796232]  [<c1574a54>] syscall_call+0x7/0xb
[ 4800.796236]  [<c1570000>] ? powernow_decode_bios+0xaa/0x15f
[ 4920.796113] INFO: task mount:6196 blocked for more than 120 seconds.
[ 4920.796118] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 4920.796121] mount           D c1064b79     0  6196   6195 0x00000000
[ 4920.796126]  edcfde08 00000086 edcfddc4 c1064b79 f77cb3c0 f7108cb0
c18e13c0 c18e13c0
[ 4920.796135]  e120fed1 0000043c f77cb3c0 f22c58d0 f2ce2610 00000000
00000008 00000000
[ 4920.796143]  edcfdde0 c1064c2f c18dce40 edc399b4 edc399b4 edcfdde0
c1027598 edcfddf4
[ 4920.796151] Call Trace:
[ 4920.796160]  [<c1064b79>] ? wait_on_cpu_work+0x89/0xb0
[ 4920.796165]  [<c1064c2f>] ? wait_on_work+0x8f/0x100
[ 4920.796170]  [<c1027598>] ? default_spin_lock_flags+0x8/0x10
[ 4920.796175]  [<c15748ad>] ? _raw_spin_lock_irqsave+0x2d/0x40
[ 4920.796180]  [<c128b577>] ? __disk_unblock_events+0x47/0xd0
[ 4920.796184]  [<c1572ca5>] schedule+0x35/0x50
[ 4920.796188]  [<c15745bd>] rwsem_down_failed_common+0x9d/0xf0
[ 4920.796192]  [<c1574622>] rwsem_down_write_failed+0x12/0x20
[ 4920.796197]  [<c12a5492>] call_rwsem_down_write_failed+0x6/0x8
[ 4920.796201]  [<c1573bd4>] ? down_write+0x24/0x30
[ 4920.796206]  [<c11348b0>] ? set_bdev_super+0x30/0x30
[ 4920.796209]  [<c11353db>] sget+0xcb/0x1c0
[ 4920.796213]  [<c1134880>] ? ns_test_super+0x20/0x20
[ 4920.796216]  [<c1135625>] mount_bdev+0xb5/0x1d0
[ 4920.796221]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 4920.796225]  [<c11c9f0f>] ext4_mount+0x1f/0x30
[ 4920.796229]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 4920.796233]  [<c11360b6>] mount_fs+0x36/0x180
[ 4920.796237]  [<c110277f>] ? __alloc_percpu+0xf/0x20
[ 4920.796241]  [<c114ce3e>] ? alloc_vfsmnt+0xae/0x130
[ 4920.796244]  [<c114cf51>] vfs_kern_mount+0x51/0xa0
[ 4920.796248]  [<c114e07e>] do_kern_mount+0x3e/0xe0
[ 4920.796251]  [<c114f774>] do_mount+0x164/0x200
[ 4920.796255]  [<c114fbab>] sys_mount+0x6b/0xa0
[ 4920.796259]  [<c1574a54>] syscall_call+0x7/0xb
[ 4920.796262]  [<c1570000>] ? powernow_decode_bios+0xaa/0x15f
[ 5040.796123] INFO: task mount:6196 blocked for more than 120 seconds.
[ 5040.796128] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 5040.796131] mount           D c1064b79     0  6196   6195 0x00000000
[ 5040.796137]  edcfde08 00000086 edcfddc4 c1064b79 f77cb3c0 f7108cb0
c18e13c0 c18e13c0
[ 5040.796145]  e120fed1 0000043c f77cb3c0 f22c58d0 f2ce2610 00000000
00000008 00000000
[ 5040.796153]  edcfdde0 c1064c2f c18dce40 edc399b4 edc399b4 edcfdde0
c1027598 edcfddf4
[ 5040.796161] Call Trace:
[ 5040.796170]  [<c1064b79>] ? wait_on_cpu_work+0x89/0xb0
[ 5040.796175]  [<c1064c2f>] ? wait_on_work+0x8f/0x100
[ 5040.796180]  [<c1027598>] ? default_spin_lock_flags+0x8/0x10
[ 5040.796185]  [<c15748ad>] ? _raw_spin_lock_irqsave+0x2d/0x40
[ 5040.796190]  [<c128b577>] ? __disk_unblock_events+0x47/0xd0
[ 5040.796194]  [<c1572ca5>] schedule+0x35/0x50
[ 5040.796198]  [<c15745bd>] rwsem_down_failed_common+0x9d/0xf0
[ 5040.796202]  [<c1574622>] rwsem_down_write_failed+0x12/0x20
[ 5040.796207]  [<c12a5492>] call_rwsem_down_write_failed+0x6/0x8
[ 5040.796211]  [<c1573bd4>] ? down_write+0x24/0x30
[ 5040.796216]  [<c11348b0>] ? set_bdev_super+0x30/0x30
[ 5040.796219]  [<c11353db>] sget+0xcb/0x1c0
[ 5040.796223]  [<c1134880>] ? ns_test_super+0x20/0x20
[ 5040.796226]  [<c1135625>] mount_bdev+0xb5/0x1d0
[ 5040.796231]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 5040.796236]  [<c11c9f0f>] ext4_mount+0x1f/0x30
[ 5040.796240]  [<c11da3a0>] ? ext4_calculate_overhead+0x190/0x190
[ 5040.796243]  [<c11360b6>] mount_fs+0x36/0x180
[ 5040.796248]  [<c110277f>] ? __alloc_percpu+0xf/0x20
[ 5040.796252]  [<c114ce3e>] ? alloc_vfsmnt+0xae/0x130
[ 5040.796256]  [<c114cf51>] vfs_kern_mount+0x51/0xa0
[ 5040.796259]  [<c114e07e>] do_kern_mount+0x3e/0xe0
[ 5040.796263]  [<c114f774>] do_mount+0x164/0x200
[ 5040.796267]  [<c114fbab>] sys_mount+0x6b/0xa0
[ 5040.796270]  [<c1574a54>] syscall_call+0x7/0xb
[ 5040.796274]  [<c1570000>] ? powernow_decode_bios+0xaa/0x15f
[ 5105.156559] EXT4-fs (sdb1): mounted filesystem with ordered data mode.
Opts: (null)
[ 7962.545715] EXT4-fs (sdb1): mounted filesystem with ordered data mode.
Opts: (null)


After waiting a while (may be 3 of 4 minutes), i've got an acces to my hard drive.

I don't know what's happened (it's over my knowledge :) ) but there is
probably a bug.

I've already talk about this bug on my LUG :

 - http://gulliver.eu.org/ml-archives/septembre-2012/msg00002.html
 - http://gulliver.eu.org/ml-archives/septembre-2012/threads.html

May be there is a problem with the uas driver ?

If there is a bug, i can help you to solve it ! :)

See you,

Arnaud

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: mount 2.20.1-1ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
Date: Wed Sep 12 14:33:22 2012
EcryptfsInUse: Yes
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: util-linux
UpgradeStatus: Upgraded to precise on 2012-06-17 (86 days ago)

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: apport-bug i386 mount precise uas
-- 
My usb 3 hard drive is mounting very slowly
https://bugs.launchpad.net/bugs/1049657
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