Hello All, I am wondering what the impact of in-place writes of the superblock has on SSDs in terms of wear? I've been stress testing our system which uses Nilfs, and recently I had a SSD fail with the classic messages indicating low level media problems -- and also implicating Nilfs as trying to locate a superblock (I think). Following is a partial dmesg list: [ 7.630382] Sense Key : Medium Error [current] [descriptor] [ 7.630385] Descriptor sense data with sense descriptors (in hex): [ 7.630386] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 [ 7.630394] 05 ff 0e 58 [ 7.630397] sd 0:0:0:0: [sda] [ 7.630399] Add. Sense: Unrecovered read error - auto reallocate failed [ 7.630401] sd 0:0:0:0: [sda] CDB: [ 7.630402] Read(10): 28 00 05 ff 0e 54 00 00 08 00 [ 7.630409] end_request: I/O error, dev sda, sector 100601432 [ 7.635326] NILFS warning: I/O error on loading last segment [ 7.635329] NILFS: error searching super root. Best regards, Mark T. -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
