Hi, after switch from 4.4 to 4.14 we're getting reports of delayed allocation failures on ext4 filesystems. Since we're getting it on many machines, including brand new or with new harddrives replaced, I don't think it's disk issue. here's example of the warning: [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 checking filesystem does not show any problem, but this does not make me any calmer.. any idea on what might cause this? this particular machine is IBM System x3200 M2, with LSI Logic / Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS (rev 02) OS is centos 7, kernel 4.14.16 If I could 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 -------------------------------------
