Hi, i noticed following warnings: [52455.961319] sd 4:1:4:0: [sda] tag#11 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [52455.961322] sd 4:1:4:0: [sda] tag#11 Sense Key : Illegal Request [current] [52455.961324] sd 4:1:4:0: [sda] tag#11 Add. Sense: No additional sense information [52455.961327] sd 4:1:4:0: [sda] tag#11 CDB: Write Same(10) 41 00 01 1c 3b 28 00 00 08 00 [52455.961329] print_req_error: I/O error, dev sda, sector 18627368 [52455.961339] EXT4-fs (dm-3): Delayed block allocation failed for inode 393338 at logical offset 1125 with max blocks 1 with error 5 [52455.961342] EXT4-fs (dm-3): This should not happen!! Data will be lost the culprit is FUSION-MPT SAS adapter, which apparently doesn't implement WRITE SAME correctly. I've reported this to linux-scsi list (and fixed it by blaklisting the feature for the module for now). but my concern is whether this case should not be handled somehow by ext4 delayed allocation code as well? (well actually I wasn't able to verify any real fs corruption so maybe it's just false warning, but still it's not very nice :)) I can easily reproduce the problem if it can help. tested on 4.14.16 kernel. If I can provide any further info, please let me know. BR nik -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28.rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@xxxxxxxxxxx -------------------------------------
