Repair MySQL data directory (for XAMPP)

repair-mysql-data.ps1

# Based on this answer: https://stackoverflow.com/a/61859561/1956278

# Backup old data
Rename-Item -Path "./data" -NewName "./data_old"

# Create new data directory
Copy-Item -Path "./backup" -Destination "./data" -Recurse
Remove-Item "./data/test" -Recurse
$dbPaths = Get-ChildItem -Path "./data_old" -Exclude ('mysql', 'performance_schema', 'phpmyadmin') -Recurse -Directory
Copy-Item -Path $dbPaths.FullName -Destination "./data" -Recurse
Copy-Item -Path "./data_old/ibdata1" -Destination "./data/ibdata1"

# Notify user
Write-Host "Finished repairing MySQL data"
Write-Host "Previous data is located at ./data_old"

Amazing ...

It's just awesome! Thanks very much!

Marvelous! Works beautifully.

thanks! as @Chanaka-J suggests adding that line helps in case you have to run it more than once

Thank you a thousand times.

This is amazing. Thank you!

Kudos. You're the best !

Golden!

Thank you guise, this has been such an annoying beast that comes around more than once. Interesting though this has been on the books for 4 years now and still going strong.

you can add a line at the beginning of the script to delete the existing "data_old" directory before creating a new backup.

# Delete existing data_old directory
Remove-Item -Path "./data_old" -Recurse -Force

Thank you all!

Thanks

Thank you!

If you get error as I did about directories not existing, change the file to this, and if paths are different change the location of directories to your absolute path:

Based on this answer: https://stackoverflow.com/a/61859561/1956278

Backup old data

Rename-Item -Path "C:/xampp/mysql/data" -NewName "C:/xampp/mysql/data_old"

Create new data directory

Copy-Item -Path "C:/xampp/mysql/backup" -Destination "C:/xampp/mysql/data" -Recurse
Remove-Item "C:/xampp/mysql/data/test" -Recurse
$dbPaths = Get-ChildItem -Path "C:/xampp/mysql/data_old" -Exclude ('mysql', 'performance_schema', 'phpmyadmin') -Recurse -Directory
Copy-Item -Path $dbPaths.FullName -Destination "C:/xampp/mysql/data" -Recurse
Copy-Item -Path "C:/xampp/mysql/data_old/ibdata1" -Destination "C:/xampp/mysql/data/ibdata1"

Notify user

Write-Host "Finished repairing MySQL data"
Write-Host "Previous data is located at C:/xampp/mysql/data_old"

you are the best

Equivalent bash scripts is

`@echo off
REM Backup old data
rename "data" "data_old"

REM Create new data directory
xcopy "backup" "data" /E /I
rmdir /S /Q "data\test"

REM Copy directories excluding specific ones (mysql, performance_schema, phpmyadmin)
for /d %%i in (data_old*) do (
if /i not "%%~nxi"=="mysql" (
if /i not "%%~nxi"=="performance_schema" (
if /i not "%%~nxi"=="phpmyadmin" (
xcopy "%%i" "data%%~nxi" /E /I
)
)
)
)

REM Copy ibdata1 file
copy "data_old\ibdata1" "data\ibdata1"

REM Notify user
echo Finished repairing MySQL data
echo Previous data is located at ./data_old
`
Run this inside mysql directory, save it like repair.bat , easier to save using notepad++, select bat for file type

you saved my afternoon

Thank you!

I realize existing Database was not able to access and getting error.

Equivalent bash scripts is

`@echo off REM Backup old data rename "data" "data_old"

REM Create new data directory xcopy "backup" "data" /E /I rmdir /S /Q "data\test"

REM Copy directories excluding specific ones (mysql, performance_schema, phpmyadmin) for /d %%i in (data_old*) do ( if /i not "%%~nxi"=="mysql" ( if /i not "%%~nxi"=="performance_schema" ( if /i not "%%~nxi"=="phpmyadmin" ( xcopy "%%i" "data%%~nxi" /E /I ) ) ) )

REM Copy ibdata1 file copy "data_old\ibdata1" "data\ibdata1"

REM Notify user echo Finished repairing MySQL data echo Previous data is located at ./data_old ` Run this inside mysql directory, save it like repair.bat , easier to save using notepad++, select bat for file type

I've edited this code a bit to include PWD support as my install had issues jumping between disks. ^^

@echo off
REM Change directory to the MySQL directory
cd /d "D:\Path\To\XAMPP\mysql"

REM Backup old data
rename "data" "data_old"

REM Create new data directory
xcopy "backup" "data" /E /I
rmdir /S /Q "data\test"

REM Copy directories excluding specific ones (mysql, performance_schema, phpmyadmin)
for /d %%i in (data_old\*) do (
    if /i not "%%~nxi"=="mysql" (
        if /i not "%%~nxi"=="performance_schema" (
            if /i not "%%~nxi"=="phpmyadmin" (
                xcopy "%%i" "data\%%~nxi" /E /I
            )
        )
    )
)

REM Copy ibdata1 file
copy "data_old\ibdata1" "data\ibdata1"

REM Notify user
echo Finished repairing MySQL data
echo Previous data is located at .\data_old
pause

Thank you, Great work !

@echo off
REM Change directory to the MySQL directory
cd /d "D:\Path\To\XAMPP\mysql"

REM Backup old data
rename "data" "data_old"

REM Create new data directory
xcopy "backup" "data" /E /I
rmdir /S /Q "data\test"

REM Copy directories excluding specific ones (mysql, performance_schema, phpmyadmin)
for /d %%i in (data_old\*) do (
    if /i not "%%~nxi"=="mysql" (
        if /i not "%%~nxi"=="performance_schema" (
            if /i not "%%~nxi"=="phpmyadmin" (
                xcopy "%%i" "data\%%~nxi" /E /I
            )
        )
    )
)

REM Copy ibdata1 file
copy "data_old\ibdata1" "data\ibdata1"

REM Notify user
echo Finished repairing MySQL data
echo Previous data is located at .\data_old
pause

Thanks, this code works correctly.

thanks you, it saved me for this subject

If this keeps happening all the time, how can we ever get to Mars?

Still works perfectly

GOAT