Re: pg_upgrade cannot create btrfs clones on linux kernel 6.8.0
| От | Michael Misiewicz |
|---|---|
| Тема | Re: pg_upgrade cannot create btrfs clones on linux kernel 6.8.0 |
| Дата | |
| Msg-id | 18648bc4bdfda4532ec668b30c98d33ea1531a99@hey.com обсуждение исходный текст |
| Ответ на | Re: pg_upgrade cannot create btrfs clones on linux kernel 6.8.0 (Tomas Vondra <tomas@vondra.me>) |
| Список | pgsql-bugs |
Tomas,
Thanks for the great suggestion. That does seem like it'd be a likely cause of the issue, but not the case here (I was thinking if the bit was set, it might indicate an issue with the debian packages).
Thanks for the great suggestion. That does seem like it'd be a likely cause of the issue, but not the case here (I was thinking if the bit was set, it might indicate an issue with the debian packages).
$ sudo lsattr /var/lib/postgresql/16/main/PG_VERSION ---------------------- /var/lib/postgresql/16/main/PG_VERSION
Michael
On December 29, 2024, Tomas Vondra <tomas@vondra.me> wrote:
On 12/30/24 01:36, Michael Misiewicz wrote:
> ...
> I have validated that my filesystem supports reflinks:
>
> $ dd of=tempfile if=/dev/random bs=1M count=24
> 24+0 records in
> 24+0 records out
> 25165824 bytes (25 MB, 24 MiB) copied, 0.0806355 s, 312 MB/s
> $ cp --reflink=always tempfile tempfile.reflink
> $ btrfs filesystem du -s tempfile tempfile.reflink
> Total Exclusive Set shared Filename
> 24.00MiB 0.00B 24.00MiB tempfile
> 24.00MiB 0.00B 24.00MiB tempfile.reflink
>
>
> And there's nothing interesting in `dmesg`.
>
> I ran this same command today on a macOS system (using apfs) and it
> worked great. I have no idea how to fix this problem and I'm curious if
> anyone has any pointers.
>
What does lsattr say about the source files?
$ lsattr /var/lib/postgresql/16/main/PG_VERSION
Chances are there is "C" attribute set, i.e. NOCOW. In that case I get
exactly the same failure :
could not clone file between old and new data directories: \
Invalid argument
regards
--
Tomas Vondra
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