hmm, further checking 4.4.52, it was not really OK too:

[ 1895.084325] blk_update_request: I/O error, dev sda, sector 239461608
[ 1895.101099] sd 4:1:1:0: [sda] tag#1 FAILED Result: hostbyte=DID_OK 
driverbyte=DRIVER_SENSE
[ 1895.101101] sd 4:1:1:0: [sda] tag#1 Sense Key : Illegal Request [current] 
[ 1895.101103] sd 4:1:1:0: [sda] tag#1 Add. Sense: No additional sense 
information
[ 1895.101105] sd 4:1:1:0: [sda] tag#1 CDB: Write Same(10) 41 00 0e 45 e5 08 00 
00 10 00
[ 1895.101106] blk_update_request: I/O error, dev sda, sector 239461640

so 4.14.x "only" brings delayed allocation errors.

but I repeat, drives are 100% OK, so it must be either HW or driver problem.

now looking more at the errors, I guess it's "only" problem with WRITE SAME 
command?

should it be blacklisted for those adapters?



On Thu, Apr 12, 2018 at 08:13:47AM +0200, Nikola Ciprich wrote:
> 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: ser...@linuxbox.cz
> -------------------------------------
> 

-- 
-------------------------------------
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: ser...@linuxbox.cz
-------------------------------------

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