Alvaro Herrera wrote on 8/3/20 12:34 PM:
On 2020-Aug-03, Ben Chobot wrote:
Yep. Looking at the ones in block 6501,
rmgr: Btree len (rec/tot): 72/ 72, tx: 76393394, lsn:
A0A/AB2C43D0, prev A0A/AB2C4378, desc: INSERT_LEAF off 41, blkref #0: rel
16605/16613/60529051 blk 6501
rmgr: Btree len (rec/tot): 72/ 72, tx: 76396065, lsn:
A0A/AC4204A0, prev A0A/AC420450, desc: INSERT_LEAF off 48, blkref #0: rel
16605/16613/60529051 blk 6501
My question was whether the block has received the update that added the
item in offset 41; that is, is the LSN in the crashed copy of the page
equal to A0A/AB2C43D0? If it's an older value, then the write above was
lost for some reason.
How do I tell?
