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Re: ext4 FS Crash

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Hi,

Michael Stone wrote on 05/12/2024 18:41:
> On Thu, Dec 05, 2024 at 10:26:18PM +0700, Max Nikulin wrote:
>> On 05/12/2024 16:19, Jörg-Volker Peetz wrote:
>>> 1. SSD's have some self healing capacities (discarding defect sectors) which 
>>> are performed when the drive is not mounted. Therefore, enter the BIOS of the 
>>> computer and let it running for ca. an hour. Then restart the computer.
>>
>> I am curious which way OS notifies a drive that it is mounted. I believed that 
>> drivers read and write blocks, maybe switch power save states, but mount is 
>> performed on a higher level.
> 
> It doesn't: leaving the system unmounted ensures that the drive is idle, but in 
> general that's not necessary--just leaving the system alone will usually have 
> the same result unless you've got a runaway process chewing on the disk. The SSD 
> will do maintenance tasks when it's idle, or under pressure (has no other choice 
> because there are no writable blocks available).

Should have been more clear. The drive should be idle for a longer time. This is 
assured by not mounting any partition of the SSD.
I was able to "repair" unreadable sectors on a built-in SSD of an HP-Probook 
laptop. As far as I remember I also deleted files which could not be read any 
more because of defective sectors and restored the files from backup. Such 
unreadable files can be found by performing, e.g., a checksum calculation of all 
files on the SSD. Then, leaving the SSD alone, it was able to "replace" the 
defective sectors by spare sectors.

Regards,
Jörg.

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ext4 FS Crash Daniel Harris <mail.dharris@googlemail.com> - 2024-12-04 13:30 +0100
  Re: ext4 FS Crash Jochen Spieker <ml@well-adjusted.de> - 2024-12-04 13:50 +0100
  Re: ext4 FS Crash Eike Lantzsch ZP5CGE / KY4PZ <zp6cge@gmx.net> - 2024-12-04 15:40 +0100
    Re: ext4 FS Crash "Andrew M.A. Cater" <amacater@einval.com> - 2024-12-04 19:20 +0100
  Re: ext4 FS Crash "Alexander V. Makartsev" <avbetev@gmail.com> - 2024-12-04 17:30 +0100
  Re: ext4 FS Crash Klaus Singvogel <deb-user-ml@singvogel.net> - 2024-12-04 17:50 +0100
    Re: ext4 FS Crash Daniel Harris <mail.dharris@googlemail.com> - 2024-12-04 18:20 +0100
      Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-05 00:50 +0100
        Re: ext4 FS Crash Daniel Harris <mail.dharris@googlemail.com> - 2024-12-05 12:00 +0100
          Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-05 13:40 +0100
            Re: ext4 FS Crash Daniel Harris <mail.dharris@googlemail.com> - 2024-12-05 16:40 +0100
      Re: ext4 FS Crash Jörg-Volker Peetz <jvpeetz@web.de> - 2024-12-05 10:30 +0100
        Re: ext4 FS Crash Max Nikulin <manikulin@gmail.com> - 2024-12-05 16:30 +0100
          Re: ext4 FS Crash Erwan David <erwan@rail.eu.org> - 2024-12-05 16:40 +0100
            Re: ext4 FS Crash Andy Smith <andy@strugglers.net> - 2024-12-05 17:10 +0100
            Re: ext4 FS Crash gene heskett <gheskett@shentel.net> - 2024-12-06 02:00 +0100
          Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-05 18:50 +0100
            Re: ext4 FS Crash Jörg-Volker Peetz <jvpeetz@web.de> - 2024-12-06 14:30 +0100
              Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-06 15:00 +0100
                Re: ext4 FS Crash Jörg-Volker Peetz <jvpeetz@web.de> - 2024-12-06 15:10 +0100
                Re: ext4 FS Crash Max Nikulin <manikulin@gmail.com> - 2024-12-06 17:00 +0100
                Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-06 17:40 +0100
                Re: ext4 FS Crash Max Nikulin <manikulin@gmail.com> - 2024-12-08 17:30 +0100
                Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-08 18:20 +0100
                Re: ext4 FS Crash Max Nikulin <manikulin@gmail.com> - 2024-12-10 04:50 +0100
                Re: ext4 FS Crash Daniel Harris <mail.dharris@googlemail.com> - 2025-01-13 16:30 +0100
    Re: ext4 FS Crash Jeffrey Walton <noloader@gmail.com> - 2024-12-04 22:00 +0100
      Re: ext4 FS Crash Klaus Singvogel <deb-user-ml@singvogel.net> - 2024-12-05 08:30 +0100
        Re: ext4 FS Crash gene heskett <gheskett@shentel.net> - 2024-12-05 11:10 +0100
          Re: ext4 FS Crash Klaus Singvogel <deb-user-ml@singvogel.net> - 2024-12-05 13:10 +0100
            Re: ext4 FS Crash gene heskett <gheskett@shentel.net> - 2024-12-05 13:40 +0100
              Re: ext4 FS Crash Michael Stone <mstone@debian.org> - 2024-12-05 14:00 +0100
              Re: ext4 FS Crash Klaus Singvogel <deb-user-ml@singvogel.net> - 2024-12-05 15:00 +0100
                Re: ext4 FS Crash gene heskett <gheskett@shentel.net> - 2024-12-05 22:30 +0100
  Re: ext4 FS Crash Jeffrey Walton <noloader@gmail.com> - 2024-12-04 18:20 +0100

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