[DRBD-user] lots of "drbd_md_sync_page_io" in kernel log since 3.15 kernel

Marcus Pereira marcus at task.com.br
Wed Jul 9 17:15:41 CEST 2014

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Em 09-07-2014 04:20, Lars Ellenberg escreveu:
> On Tue, Jul 08, 2014 at 10:44:47AM -0500, Ross Anderson wrote:
>> Seems to happen on all my drbd devices (currently 52 on this server) and
>> is affecting functionality.
>> I use external meta-disk. Disk and meta-disk are LVM volumes and blocks
>> are used by VPSs running below kvm/libvirt/qemu.
>>
>> Some of my guest VPS show errors like this:
>> Jul  7 09:09:51 webx kernel: [28863.199248] EXT4-fs warning (device
>> vda1): ext4_end_bio:317: I/O error writing to inode 1050005 (offset 0
>> size 0 starting block 4871811)
>> Jul  7 09:09:51 webx kernel: [28863.199278] Buffer I/O error on device
>> vda1, logical block 4871555
> *that* is something else,
> and should not be caused by the above debug messages.
>

I can confirm the above error is NOT related to DRBD. I removed the drbd 
configuration of one of my guests and configured it to access directly 
the lvm volume and the error still occours at random time. I am still 
working on solving this problem.


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