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From Pierre Barre
Subject VACUUM FULL, power failure results in unrecoverable space
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Msg-id 0d11ad5e-5903-49ce-8fff-4650919f4b44@app.fastmail.com
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Responses Re: VACUUM FULL, power failure results in unrecoverable space
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Hello,

I encountered an issue while attempting to reclaim space from a heavily bloated table:

Initial analysis using https://github.com/ioguix/pgsql-bloat-estimation/blob/master/table/table_bloat.sql indicated approximately 600GB of bloat in the table.

I initiated a VACUUM FULL operation to reclaim this space, but during execution, the server experienced a power failure.


After server recovery:

1. The database came back online successfully
2. The space used by the in-progress table reconstruction was not freed
3. The newly wasted space (bloat + partial VACUUM FULL) is not shown using the above query, only the initial bloat.


Is there a way to reclaim this space without resorting to a full pg_dump and pg_restore cycle? 

Thanks.

Best,
Pierre

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