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I have a 160G USB 2.0 drive on current FC5 32bit system.  During periods
of heavy I/O, it is disconnected from the system.  All the failures
until today were occurred with the heavy I/O on the USB drive.  Today, I
experienced the same failure during heavy nfs load on my system and
minimal load on the USB drive.  I didn't find others reporting the same
problem under the same circumstances.  I have an encrypted partition
(sda3) on the drive mounted through a crypto loop device.  The USB drive
is quickly redetected.  The fat32 and ext3 partitions on the USB drive
are unaffected.  Anyone else seeing this?

Best regards,
Sky Wavrek

Sep  4 19:50:30 lurch kernel: usb 6-5: USB disconnect, address 2
Sep  4 19:50:30 lurch kernel: sd 0:0:0:0: rejecting I/O to device being
removed
Sep  4 19:50:30 lurch kernel: Buffer I/O error on device sda3, logical
block 30104
Sep  4 19:50:30 lurch kernel: lost page write due to I/O error on sda3
...

Sep  4 19:50:31 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:32 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:32 lurch kernel: FAT: Directory bread(block 66762) failed
...
Sep  4 19:50:33 lurch kernel: EXT3-fs error (device loop0):
ext3_find_entry: reading directory #261473 offset 0
Sep  4 19:50:33 lurch kernel: Aborting journal on device loop0.
Sep  4 19:50:33 lurch kernel: ext3_abort called.
Sep  4 19:50:33 lurch kernel: EXT3-fs error (device loop0):
ext3_journal_start_sb: Detected aborted journal
Sep  4 19:50:33 lurch kernel: Remounting filesystem read-only
Sep  4 19:50:33 lurch kernel: usb 6-5: configuration #1 chosen from 1
choice
Sep  4 19:50:33 lurch kernel: scsi1 : SCSI emulation for USB Mass
Storage devices
Sep  4 19:50:33 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:33 lurch last message repeated 4 times
Sep  4 19:50:33 lurch kernel: EXT3-fs error (device loop0):
ext3_get_inode_loc: unable to read inode block - inode=163291,
block=327684
Sep  4 19:50:33 lurch kernel: usb 6-5: USB disconnect, address 3
Sep  4 19:50:33 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:33 lurch last message repeated 2 times
Sep  4 19:50:33 lurch kernel: usb 6-5: new high speed USB device using
ehci_hcd and address 4
Sep  4 19:50:33 lurch kernel: usb 6-5: configuration #1 chosen from 1
choice
Sep  4 19:50:33 lurch kernel: scsi2 : SCSI emulation for USB Mass
Storage devices
Sep  4 19:50:33 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:33 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:38 lurch kernel:   Vendor: USB-HS    Model: WDC
WD1600BB-00G  Rev: 0.01
Sep  4 19:50:38 lurch kernel:   Type:   Direct-Access
ANSI SCSI revision: 00
Sep  4 19:50:38 lurch kernel: SCSI device sdb: 312581808 512-byte hdwr
sectors (160042 MB)
Sep  4 19:50:38 lurch kernel: sdb: Write Protect is off
Sep  4 19:50:38 lurch kernel: sdb: assuming drive cache: write through
Sep  4 19:50:38 lurch kernel: SCSI device sdb: 312581808 512-byte hdwr
sectors (160042 MB)
Sep  4 19:50:38 lurch kernel: sdb: Write Protect is off
Sep  4 19:50:38 lurch kernel: sdb: assuming drive cache: write through
Sep  4 19:50:38 lurch kernel:  sdb: sdb1 sdb2 sdb3
Sep  4 19:50:38 lurch kernel: sd 2:0:0:0: Attached scsi disk sdb
Sep  4 19:50:38 lurch kernel: sd 2:0:0:0: Attached scsi generic sg0 type
0
Sep  4 19:50:41 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:41 lurch kernel: printk: 191 messages suppressed.
Sep  4 19:50:41 lurch kernel: Buffer I/O error on device sda3, logical
block 14680080
Sep  4 19:50:41 lurch kernel: Buffer I/O error on device sda3, logical
block 14680081
Sep  4 19:50:41 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:50:41 lurch kernel: EXT3-fs error (device loop0):
ext3_get_inode_loc: unable to read inode block - inode=913921,
block=1835010
Sep  4 19:50:43 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:51:08 lurch kernel:  0:0:0:0: rejecting I/O to dead device
Sep  4 19:51:08 lurch kernel: printk: 22 messages suppressed.
Sep  4 19:51:08 lurch kernel: Buffer I/O error on device sda3, logical
block 0
...


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