US 12,436,843 B1
Smooth metadata pages stream to raid blocks in log structured metadata based storage cluster
Vladimir Shveidel, Pardes Hana-Karkur (IL)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Apr. 4, 2024, as Appl. No. 18/626,531.
Int. Cl. G06F 11/10 (2006.01); G06F 11/14 (2006.01)
CPC G06F 11/1092 (2013.01) [G06F 11/1088 (2013.01); G06F 11/1471 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
during performance of a first transaction commit operation by a storage node, writing raw delta updates of metadata (MD) pages to an MD delta log, at least some of the raw delta updates corresponding to bulk updates of a first MD page;
generating an MD stream for the first MD page containing bulk updates;
passing the MD stream to a tiered storage array;
storing the first MD page in a physical layer block (PLB) on an MD page tier of the tiered storage array, the PLB being only partially filled with MD pages;
in response to storing the first MD page in the PLB, updating, in local memory, parity data for a RAID (Redundant Array of Independent Disks) stripe including the first MD page; and
in response to a storage drive failure, rebuilding the RAID stripe using the updated parity data in the local memory.