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Athena Wisdom avatar Ubuntu

df hanging: Buffer I/O error on dev sdh1, logical block 754166359, async page read

gr flag
Athena Wisdom

After a Ubuntu 20.04 machine has been running for some time, and I tried to run df, it simply just hangs there.

dmesg shows tons of the same error message:

[118924.226495] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.226928] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.227149] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.227344] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.227500] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.227701] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.227906] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.228065] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.228354] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118924.228517] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.496105] buffer_io_error: 1440 callbacks suppressed
[118929.496110] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.496422] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.496605] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.496780] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.496964] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.497150] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.497296] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.497445] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.497625] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118929.497855] Buffer I/O error on dev sdh1, logical block 754166359, async page read
[118934.783290] buffer_io_error: 1440 callbacks suppressed

How should we proceed next?

Can we unmount /dev/sdh1, then remount it, in order for us to run df properly again? If so, how do we find the mount point for /dev/sdh1, so that we can run the command sudo umount <mountpoint_of_/dev/sdh1>?

Tried the following commands but they return nothing

  • findmnt -S /dev/sdh
  • findmnt -S /dev/sdh1
  • grep /dev/sdh /etc/mtab
  • grep /dev/sdh1 /etc/mtab
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df
heynnema avatar
ru flag
heynnema
Edit your question and show me `grep -i FPDMA /var/log/syslog*` and get a screenshot of the `Disks` app **SMART Data & Tests** data window. Resize the window so the screenshot can capture all of the data. Start comments to me with @heynnema or I'll miss them.
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Athena Wisdom avatar
gr flag
Athena Wisdom
@matigo Think its using NTFS. Output of `sudo blkid /dev/sdh1` includes `TYPE="ntfs"`
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in flag
matigo
If the partition is NTFS, then you'll need to boot into Windows to try and fix it
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in flag
matigo
This message is stating pretty clearly that you have a single bad block on the storage device. This could be “just a bad block” or it could be a sign that the disk is starting to fail. What file system is being used on `sdh1`?
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Score:-2
Francesco Potortì avatar Ubuntu
si flag
Francesco Potortì

You do not need to know the mount point in order to unmount it, the device name is enough. Just do sudo umount /dev/sdh1.

If you want to identify the mount point, findmnt /dev/sdh1 should be enough.

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