/proc/bus/usb: mount point does not exist

[RichardJennings]

I'm having trouble getting a 2TB SSD to mount on a sbRIO-9607 running LV2020, but no problem with a 1TB. Both are formatted ext3 which should handle up to 4 TB. Is there a limit for the drive to automagically mount?

# mount -a
mount: /proc/bus/usb: mount point does not exist.

mount -l shows the drive is seen.

Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x8ae55940

Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 3907029167 3907027120 1.8T 83 Linux

Here is dmesg output from the successful mount:

6.082304] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[ 6.160792] ubi0 error: ubi_open_volume: cannot open device 0, volume 2, error -16
[ 6.234992] ubi1 error: ubi_open_volume: cannot open device 1, volume 0, error -16
[ 7.723934] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 7.735291] scsi host0: usb-storage 1-1:1.0
[ 7.735850] usbcore: registered new interface driver usb-storage
[ 8.803494] scsi 0:0:0:0: Direct-Access SanDisk Extreme SSD 1012 PQ: 0 ANSI: 6
[ 8.805564] sd 0:0:0:0: [sda] 1953523712 512-byte logical blocks: (1.00 TB/932 GiB)
[ 8.805911] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 8.806816] sd 0:0:0:0: [sda] Write Protect is off
[ 8.806826] sd 0:0:0:0: [sda] Mode Sense: 47 00 10 08
[ 8.807876] scsi 0:0:0:1: Enclosure SanDisk SES Device 1012 PQ: 0 ANSI: 6
[ 8.808572] sd 0:0:0:0: [sda] No Caching mode page found
[ 8.808582] sd 0:0:0:0: [sda] Assuming drive cache: write through
[ 8.817079] scsi 0:0:0:1: Attached scsi generic sg1 type 13
[ 8.839070] sda: sda1
[ 8.843198] sd 0:0:0:0: [sda] Attached SCSI disk
[ 9.459172] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
[ 9.564672] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 10.526163] UBIFS (ubi0:3): background thread "ubifs_bgt0_3" started, PID 479
[ 10.578040] UBIFS (ubi0:3): UBIFS: mounted UBI device 0, volume 3, name "config"
[ 10.578057] UBIFS (ubi0:3): LEB size: 129024 bytes (126 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[ 10.578070] UBIFS (ubi0:3): FS size: 2967552 bytes (2 MiB, 23 LEBs), journal size 1032193 bytes (0 MiB, 6 LEBs)

Here's the dmesg output from the unsuccessful mount:

[1116960.975952] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[1116961.200471] usb-storage 1-1:1.0: USB Mass Storage device detected
[1116961.200910] usb-storage 1-1:1.0: Quirks match for vid 174c pid 55aa: 400000
[1116961.201041] scsi host0: usb-storage 1-1:1.0
[1116961.201657] usbcore: registered new interface driver usb-storage
[1116962.217083] scsi 0:0:0:0: Direct-Access ASMT ASM105x 0 PQ: 0 ANSI: 6
[1116962.218804] sd 0:0:0:0: Attached scsi generic sg0 type 0
[1116962.220223] sd 0:0:0:0: [sda] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[1116962.220233] sd 0:0:0:0: [sda] 4096-byte physical blocks
[1116962.221710] sd 0:0:0:0: [sda] Write Protect is off
[1116962.221720] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[1116962.222698] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[1116962.228489] sda: sda1
[1116962.239462] sd 0:0:0:0: [sda] Attached SCSI disk

Any thoughts?

Thanks,

Richard

[AustinMan@NI]

Have you checked the /media folder? That is where the external storage devices are located.

My 5TB USB backup (mechanical, NTFS) drive and a 1TB SSD show up on a PXI controller. A reboot may also help. I can try a cRIO if you are still having issues.

[RichardJennings]

It doesn't show up in /media either. It's just not getting mounted. Here's dmesg when inserting a 1 TB, then removing the 1TB and inserting the 2TB:

92.302217] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[ 92.527506] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 92.528112] scsi host0: usb-storage 1-1:1.0
[ 92.528663] usbcore: registered new interface driver usb-storage
[ 93.603472] scsi 0:0:0:0: Direct-Access SanDisk Extreme SSD 1012 PQ: 0 ANSI: 6
[ 93.604806] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 93.605476] sd 0:0:0:0: [sda] 1953523712 512-byte logical blocks: (1.00 TB/932 GiB)
[ 93.606803] sd 0:0:0:0: [sda] Write Protect is off
[ 93.606813] sd 0:0:0:0: [sda] Mode Sense: 47 00 10 08
[ 93.607451] scsi 0:0:0:1: Enclosure SanDisk SES Device 1012 PQ: 0 ANSI: 6
[ 93.608482] sd 0:0:0:0: [sda] No Caching mode page found
[ 93.608491] sd 0:0:0:0: [sda] Assuming drive cache: write through
[ 93.612991] scsi 0:0:0:1: Attached scsi generic sg1 type 13
[ 93.979471] sda: sda1
[ 93.983458] sd 0:0:0:0: [sda] Attached SCSI disk
[ 95.021805] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
[ 95.139539] EXT4-fs (sda1): recovery complete
[ 95.140442] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)

-------Filesystem is mounted
[ 222.549085] usb 1-1: USB disconnect, device number 2
[ 232.232308] usb 1-1: new high-speed USB device number 3 using ci_hdrc
[ 232.435829] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 232.436195] usb-storage 1-1:1.0: Quirks match for vid 174c pid 55aa: 400000
[ 232.436312] scsi host0: usb-storage 1-1:1.0
[ 233.443375] scsi 0:0:0:0: Direct-Access ASMT ASM105x 0 PQ: 0 ANSI: 6
[ 233.444978] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 233.446640] sd 0:0:0:0: [sda] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[ 233.446651] sd 0:0:0:0: [sda] 4096-byte physical blocks
[ 233.447474] sd 0:0:0:0: [sda] Write Protect is off
[ 233.447485] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[ 233.448608] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 233.457343] sda: sda1
[ 233.469024] sd 0:0:0:0: [sda] Attached SCSI disk
admin@Unit01:~# ls -l /media
total 0

----filesystem is not mounted

[RichardJennings · Accepted solution]

Strange - I reformatted as ext4 and it mounted fine.

Problem solved