[nylug-talk] fsck chestnut

[matt black]

Classic question, how do you fsck a mounted partition. Googling found some 
really bad advice but not the basic solution to this problem:

We have a single partition installation that dmesg has 100 lines of errors 
for (appended below)
And here is the output of fsck -n:


Block bitmap differences -551496 -551546
Fix?

Free blocks count wrong for group #16 (19402 counted=19400)
Fix?

Free blocks count wrong (4184669 counted=4171517)
Fix?

Free blocks count wrong  2304744 counted=2304483
Fix?

So the question is how to fix these errorson a single running partition.

sincerely,

Matt


relevant parts of dmesg:
[17179576.496000]     ide0: BM-DMA at 0x10a0-0x10a7, BIOS settings: hda:DMA, 
hdb:pio
[17179576.496000]     ide1: BM-DMA at 0x10a8-0x10af, BIOS settings: hdc:DMA, 
hdd:pio
[17179576.496000] Probing IDE interface ide0...
[17179576.784000] hda: ST320413A, ATA DISK drive
[17179577.456000] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
[17179577.456000] Probing IDE interface ide1...
[17179578.192000] hdc: LTN485S, ATAPI CD/DVD-ROM drive
[17179578.528000] ide1 at 0x170-0x177,0x376 on irq 15
[17179578.548000] hda: max request size: 128KiB
[17179578.568000] hda: Host Protected Area detected.
[17179578.568000] 	current capacity is 39102336 sectors (20020 MB)
[17179578.568000] 	native  capacity is 39102337 sectors (20020 MB)
[17179578.580000] hda: Host Protected Area disabled.
[17179578.580000] hda: 39102337 sectors (20020 MB) w/512KiB Cache, 
CHS=38792/16/63, UDMA(66)
[17179578.580000] hda: cache flushes not supported
[17179578.580000]  hda: hda1 hda2 < hda5 >
[17179578.648000] hdc: ATAPI 48X CD-ROM drive, 120kB Cache, UDMA(33)
[17179578.648000] Uniform CD-ROM driver Revision: 3.20
[17179578.852000] hda: dma_intr: status=0x51 { DriveReady SeekComplete Error 
}
[17179578.852000] hda: dma_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39102336, sector=39102336
[17179578.852000] ide: failed opcode was: unknown
[17179578.996000] hda: dma_intr: status=0x51 { DriveReady SeekComplete Error 
}
[17179578.996000] hda: dma_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39102336, sector=39102336
[17179578.996000] ide: failed opcode was: unknown
[17179579.136000] hda: dma_intr: status=0x51 { DriveReady SeekComplete Error 
}
[17179579.136000] hda: dma_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39102336, sector=39102336
[17179579.136000] ide: failed opcode was: unknown
[17179579.280000] hda: dma_intr: status=0x51 { DriveReady SeekComplete Error 
}
[17179579.280000] hda: dma_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39102336, sector=39102336
[17179579.280000] ide: failed opcode was: unknown
[17179579.280000] hda: DMA disabled
[17179579.328000] ide0: reset: success
[17179579.500000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179579.500000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179579.500000] ide: failed opcode was: unknown
[17179579.672000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179579.672000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179579.672000] ide: failed opcode was: unknown
[17179579.844000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179579.844000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179579.844000] ide: failed opcode was: unknown
[17179580.016000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179580.016000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179580.016000] ide: failed opcode was: unknown
[17179580.064000] ide0: reset: success
[17179580.236000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179580.236000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179580.236000] ide: failed opcode was: unknown
[17179580.236000] end_request: I/O error, dev hda, sector 39102336
[17179580.236000] Buffer I/O error on device hda, logical block 39102336
[17179580.408000] hda: task_in_intr: status=0x59 { DriveReady SeekComplete 
DataRequest Error }
[17179580.408000] hda: task_in_intr: error=0x10 { SectorIdNotFound }, 
LBAsect=39167615, sector=39102336
[17179580.408000] ide: failed opcode was: unknown

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