Arch Linux

lithium

Member

Registered: 2007-09-18

Posts: 78

blk_update_request: I/O error

Hey all, long time no see!

I'm getting the following error when booting up my arch system:

[    1.313621] blk_update_request: I/O error, dev fd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0

Googling this, most of the discussion is surrounding systems that do not have a floppy drive but have this error. My system DOES have a floppy drive. The floppy kernel module is loaded, as I believe it should be.

I'm also seeing this:

[   16.077615] blk_update_request: I/O error, dev sr0, sector 1167088 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0

sr0 is my DVD+RW drive.

As far as I can tell, both of these physical drives are working just fine. I did have a copy-protected game CD in the DVD drive so perhaps that could be causing the sr0 issue but there isn't anything in the floppy drive.

These errors don't seem to break anything but I'd like to get rid of them or at least understand why they're present. Any ideas?

Last edited by lithium (2021-05-24 18:00:48)

theringoffire

Member

Registered: 2014-01-25

Posts: 23

Re: blk_update_request: I/O error

Same here. I get this since a fresh install (but no HW changes) a few weeks ago:

blk_update_request: I/O error, dev sr0, sector 2097136 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097136 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097136, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097137 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097137, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097138 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097138, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097139 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097139, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097140 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097140, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097141 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097141, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097142 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097142, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 2097143 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 2097143, async page read
Jun 23 18:12:30 archryzen kernel: blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 0, async page read
Jun 23 18:12:30 archryzen kernel: Buffer I/O error on dev sr0, logical block 1, async page read

There is no CD / DVD inserted. The drive is functioning normal as soon as I put a disk in.
Block devices are:

NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 931.5G  0 disk 
└─sda1        8:1    0 931.5G  0 part /mnt/scratchdisk
sr0          11:0    1  1024M  0 rom  
nvme0n1     259:0    0 476.9G  0 disk 
├─nvme0n1p1 259:1    0   512M  0 part /boot
└─nvme0n1p2 259:2    0 476.4G  0 part /

This not causing any more problems than 1-2 seconds longer boot time. Still a bit annoying.

My system:
Operating System: Arch Linux
KDE Plasma Version: 5.22.2
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.2
Kernel Version: 5.12.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 3900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: Radeon RX 580 Series

mwigzell

Member

Registered: 2016-01-29

Posts: 38

Re: blk_update_request: I/O error

I saw same issue in my journal, and sure enough, it is my CD drive:

kernel: sr 3:0:0:0: [sr0] scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda tray

And lo, inside was a audio CD that I was having trouble reading the first track of.
Thanks.