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Yes, see the "What is bcache?" section here: http://bcache.evilpiepirate.org/ http://bcache.evilpiepirate.org/ He compares it to L2ARC... same but with writebac
by wscott 11y ago
Yes, see the "What is bcache?" section here:
http://bcache.evilpiepirate.org/ http://bcache.evilpiepirate.org/
He compares it to L2ARC... same but with writeback. (ie writes can be considered finished when they are recorded by the SSD. Faster but less safe unless your SSD is also a raid.)
The bcachefs part at the top of that page is the new stuff this announcement is describing.
- stewartbutler 11y agoOk, so it is a combination of L2ARC and ZIL (zfs intent log), then? L2ARC improves read operations, ZIL improves writes.
- wtallis 11y agoIt's neither. It's just a writeback cache, that gets bypassed for sequential operations.