| From: | Scott Ribe <scott_ribe(at)elevated-dev(dot)com> |
|---|---|
| To: | Mladen Gogala <gogala(dot)mladen(at)gmail(dot)com> |
| Cc: | pgsql-admin(at)lists(dot)postgresql(dot)org |
| Subject: | Re: WAL & ZFS |
| Date: | 2022-03-31 23:13:29 |
| Message-ID: | 26C01C4E-9D90-4E18-9976-6A1457428931@elevated-dev.com |
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| Thread: | |
| Lists: | pgsql-admin |
> On Mar 31, 2022, at 5:09 PM, Mladen Gogala <gogala(dot)mladen(at)gmail(dot)com> wrote:
>
> Journallng file systems journal file operations like open, close, create, extend, rename or delete, not file block operations. File blocks are not protected by file system journalling, just the inodes. The file system journal prevents you from losing files in case of sudden machine crash, like when the machine loses power. It has nothing to do with the block change journaling, which is the role of WAL files.
LOL, I *knew* that about journaling file systems, thanks for reminding me!
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