Messages in this thread | | | Date | Fri, 05 Apr 2002 09:20:13 -0600 | From | Stephen Lord <> | Subject | Re: REPOST : linux-2.5.5-xfs-dj1 - 2.5.7-dj2 (raid0_make_request bug) |
| |
svetljo wrote:
> Hi > i'd like to ask you to CC me because i'm not subscribed to the lists > > i'm having some interesting troubles > i have lvm over soft RAID-0 with LV's formated with XFS and JFS > i can work with the JFS LV's, > but i can not with the XFS one's, i can not mount them ( no troubles > with XFS normal partitions) > > so > i'd like to ask is this problem with XFS or with raid or lvm > and is there a way to fix it > > thanks for your help > > here is what i found in dmesg > > > XFS mounting filesystem lvm(58,2) > raid0_make_request bug: can't convert block across chunks or bigger than > 16k 8323317 64 > raid0_make_request bug: can't convert block across chunks or bigger than > 16k 8323445 64 > I/O error in filesystem ("lvm(58,2)") meta-data dev 0xc0223a02 block > 0x601f7d > ("xlog_bread") error 5 buf count 131072 > raid0_make_request bug: can't convert block across chunks or bigger than > 16k 8324829 29 > I/O error in filesystem ("lvm(58,2)") meta-data dev 0xc0223a02 block > 0x602565 > ("xlog_bread") error 5 buf count 30208 >
This is your problem, in the 2.5 code base, the bio infrastructure and the raid code do not work well together. It is being worked on - slowly.
If you want to dumb down xfs to make it function then I suspect you can do it by editing
fs/xfs/pagebuf/page_buf.c
looking for the line which uses BIO_MAX_SECTORS and replace
nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - 9);
with
nr_pages = 1;
And for extra bonus points, only do it when pb->pb_dev is on the MD_MAJOR device.
This will make xfs send smaller bio structures down to the block layer and hopefully avoid the problem.
I have not tested this - don't have any time right now, on a plane in 6 hours and way too much to do.
Steve
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |