I have a SATA disk in an external USB docking station. The computer it is attached to is on UPS, but the external disk has only surge protection.
When the power goes out for a moment, the disk, which was /dev/sdc, seems to come back as /dev/sdd. The disk has a partition that is part of an LVM volume group, and the file system on the disk is inaccessible. I've had to restart the system to get the disk back. Is there a better way (aside from getting the disk on UPS)? Debian Lenny (mostly), 2.6.26-2-686 stock Debian kernel on Pentium 4 chip w/hyperthreading. The disk uses the GPT partition format. Most recent incident: <log> #power fails Mar 7 11:21:18 corn kernel: [182529.931888] ethfast: Link is Down Mar 7 11:21:18 corn kernel: [182530.140155] usb 5-3: USB disconnect, address 4 Mar 7 11:21:18 corn kernel: [182530.140155] usb 5-3.1: USB disconnect, address 7 Mar 7 11:21:18 corn kernel: [182530.140155] usb 5-3.2: USB disconnect, address 8 Mar 7 11:21:18 corn kernel: [182530.140155] usblp0: removed Mar 7 11:21:18 corn kernel: [182530.375701] usb 5-4: USB disconnect, address 5 #power resumes Mar 7 11:21:21 corn kernel: [182533.121591] usb 5-3: new high speed USB device using ehci_hcd and address 9 Mar 7 11:21:21 corn kernel: [182533.179788] hub 5-0:1.0: unable to enumerate USB device on port 3 Mar 7 11:21:30 corn kernel: [182542.755370] __ratelimit: 4 messages suppressed Mar 7 11:21:30 corn kernel: [182542.755379] Buffer I/O error on device dm-15, logical block 8210 Mar 7 11:21:30 corn kernel: [182542.755384] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.755480] ReiserFS: dm-15: warning: journal-837: IO error during journal replay Mar 7 11:21:30 corn kernel: [182542.755480] REISERFS: abort (device dm-15): Write error while updating journal header in flush_journal_list Mar 7 11:21:30 corn kernel: [182542.755480] REISERFS: Aborting journal for filesystem on dm-15 Mar 7 11:21:30 corn kernel: [182542.755480] Buffer I/O error on device dm-15, logical block 418 Mar 7 11:21:30 corn kernel: [182542.755480] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 419 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 420 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 421 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 422 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 423 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 424 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 425 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.761971] Buffer I/O error on device dm-15, logical block 426 Mar 7 11:21:30 corn kernel: [182542.761971] lost page write due to I/O error on dm-15 Mar 7 11:21:30 corn kernel: [182542.762384] ReiserFS: dm-15: warning: clm-6006: writing inode 2353029 on readonly FS Mar 7 11:21:30 corn kernel: [182543.243725] usb 5-3: new high speed USB device using ehci_hcd and address 10 Mar 7 11:21:30 corn kernel: [182543.392646] usb 5-3: configuration #1 chosen from 1 choice Mar 7 11:21:30 corn kernel: [182543.394112] hub 5-3:1.0: USB hub found Mar 7 11:21:30 corn kernel: [182543.395207] hub 5-3:1.0: 4 ports detected Mar 7 11:21:30 corn kernel: [182543.501289] usb 5-3: New USB device found, idVendor=1a40, idProduct=0101 Mar 7 11:21:30 corn kernel: [182543.501298] usb 5-3: New USB device strings: Mfr=0, Product=1, SerialNumber=0 Mar 7 11:21:30 corn kernel: [182543.501303] usb 5-3: Product: USB 2.0 Hub [MTT] Mar 7 11:21:31 corn kernel: [182543.752650] usb 5-4: new high speed USB device using ehci_hcd and address 11 Mar 7 11:21:31 corn kernel: [182543.828137] ethfast: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX Mar 7 11:21:31 corn kernel: [182543.828137] ethfast: 10/100 speed: disabling TSO Mar 7 11:21:31 corn kernel: [182543.895490] usb 5-4: configuration #1 chosen from 1 choice Mar 7 11:21:31 corn kernel: [182543.899493] usb 5-4: New USB device found, idVendor=04b8, idProduct=011e Mar 7 11:21:31 corn kernel: [182543.899493] usb 5-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Mar 7 11:21:31 corn kernel: [182543.899493] usb 5-4: Product: EPSON Scanner Mar 7 11:21:31 corn kernel: [182543.899493] usb 5-4: Manufacturer: EPSON Mar 7 11:21:33 corn kernel: [182546.073233] usb 5-3.2: new high speed USB device using ehci_hcd and address 12 Mar 7 11:21:33 corn kernel: [182546.172447] usb 5-3.2: configuration #1 chosen from 1 choice Mar 7 11:21:33 corn kernel: [182546.172447] usblp0: USB Bidirectional printer dev 12 if 0 alt 0 proto 2 vid 0x04F9 pid 0x0022 Mar 7 11:21:33 corn kernel: [182546.173904] usb 5-3.2: New USB device found, idVendor=04f9, idProduct=0022 Mar 7 11:21:33 corn kernel: [182546.173904] usb 5-3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Mar 7 11:21:33 corn kernel: [182546.173904] usb 5-3.2: Product: HL-5150D Mar 7 11:21:33 corn kernel: [182546.173904] usb 5-3.2: Manufacturer: Brother Mar 7 11:21:33 corn kernel: [182546.173904] usb 5-3.2: SerialNumber: K4J587961 Mar 7 11:21:45 corn kernel: [182558.721983] usb 5-3.1: new high speed USB device using ehci_hcd and address 13 Mar 7 11:21:45 corn kernel: [182558.831699] usb 5-3.1: configuration #1 chosen from 1 choice Mar 7 11:21:45 corn kernel: [182558.840748] scsi3 : SCSI emulation for USB Mass Storage devices Mar 7 11:21:45 corn kernel: [182558.841637] usb-storage: device found at 13 Mar 7 11:21:45 corn kernel: [182558.841637] usb-storage: waiting for device to settle before scanning Mar 7 11:21:45 corn kernel: [182558.843187] usb 5-3.1: New USB device found, idVendor=05e3, idProduct=0718 Mar 7 11:21:45 corn kernel: [182558.843187] usb 5-3.1: New USB device strings: Mfr=0, Product=1, SerialNumber=2 Mar 7 11:21:45 corn kernel: [182558.843187] usb 5-3.1: Product: USB Storage Mar 7 11:21:45 corn kernel: [182558.843187] usb 5-3.1: SerialNumber: 000000000033 Mar 7 11:21:50 corn kernel: [182564.109577] usb-storage: device scan complete Mar 7 11:21:50 corn kernel: [182564.120422] scsi 3:0:0:0: Direct-Access WDC WD20 EARS-00MVWB0 0009 PQ: 0 ANSI: 0 Mar 7 11:21:50 corn kernel: [182564.120864] sd 3:0:0:0: [sdd] 3907029164 512-byte hardware sectors (2000399 MB) Mar 7 11:21:50 corn kernel: [182564.121231] sd 3:0:0:0: [sdd] Write Protect is off Mar 7 11:21:50 corn kernel: [182564.121238] sd 3:0:0:0: [sdd] Mode Sense: 03 00 00 00 Mar 7 11:21:50 corn kernel: [182564.121244] sd 3:0:0:0: [sdd] Assuming drive cache: write through Mar 7 11:21:50 corn kernel: [182564.122131] sd 3:0:0:0: [sdd] 3907029164 512-byte hardware sectors (2000399 MB) Mar 7 11:21:50 corn kernel: [182564.123130] sd 3:0:0:0: [sdd] Write Protect is off Mar 7 11:21:50 corn kernel: [182564.123137] sd 3:0:0:0: [sdd] Mode Sense: 03 00 00 00 Mar 7 11:21:50 corn kernel: [182564.123141] sd 3:0:0:0: [sdd] Assuming drive cache: write through Mar 7 11:21:50 corn kernel: [182564.123147] sdd: sdd1 sdd2 Mar 7 11:21:50 corn kernel: [182564.181578] sd 3:0:0:0: [sdd] Attached SCSI disk Mar 7 11:21:59 corn kernel: [182573.966058] ethfast: Link is Down Mar 7 11:22:01 corn kernel: [182576.033698] ethfast: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX Mar 7 11:22:01 corn kernel: [182576.033698] ethfast: 10/100 speed: disabling TSO Mar 7 11:38:38 corn kernel: [183622.652570] ReiserFS: dm-15: warning: zam-7001: io error in reiserfs_find_entry Mar 7 11:43:31 corn kernel: [183936.863472] fuse exit Mar 7 11:43:33 corn kernel: [183938.589854] nfsd: last server has exited Mar 7 11:43:33 corn kernel: [183938.614722] nfsd: unexporting all filesystems </log> -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". 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