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Are you saying that most SSDs lose data they claimed was saved to stable storage in the event of power loss? That's crazy. Filesystems are greatly complicated b
by dmm 10y ago
Are you saying that most SSDs lose data they claimed was saved to stable storage in the event of power loss? That's crazy. Filesystems are greatly complicated by the need to be resistant to power loss.
What is the point of all that complication if the block device is just going to throw away those guarantees? If we're giving up on power loss safety I can make a super fast filesystem by making fsync a no-op and keeping everything in ram until I feel like writing it.
- creshal 10y ago> Are you saying that most SSDs lose data they claimed was saved to stable storage in the event of power loss? Same with HDDs. That's why battery-backed hardware RAIDs (+ disabling this cache on the connected disks) are a thing in the first place. > What is the point of all that complication if the block device is just going to throw away those guarantees? Ask that storage manufacturers.