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SubjectRe: dirty md raid5 slab bio leak [FIXED]
Date
On Tuesday 28 June 2005 08:17, Andrew Morton wrote:
> Neil Brown <neilb@cse.unsw.edu.au> wrote:
> > On Monday June 27, akpm@osdl.org wrote:
> > > Neil Brown <neilb@cse.unsw.edu.au> wrote:
> > > > It's OK, I found it. The bio leaks when writing the md superblock.
> > >
> > > Thanks.
> > >
> > > > insert a missing bio_put when writting the md superblock.
> > >
> > > Does 2.6.12.x need this?
> >
> > Hmmm.. probably, though it isn't Ooopsable, and isn't a security
> > problem. Just a slow leak with a trivial patch...
>
> It's a pretty sad bug if it hits you though.
>
> > Is there a web-page somewhere that lists the acceptance criterea? I
> > didn't save the mail message.
>
> Me either. Just send 'em any old thing and let them decide ;)
>
> > Do I just mail the patch to stable@kernel.org ??
>
> That's OK, I'll add it to my backport queue - we should leave it to bake in
> 2.6.13-rc1 for a bit first.
>

2.6.13-rc1 fixed this. Verified on the same machine, same hardware, same
disk-failure, but new kernel.

Jul 6 06:33:47 c64 ata4: command 0x35 timeout, stat 0xd8 host_stat 0x0
Jul 6 06:33:47 c64 ata4: status=0xd8 { Busy }
Jul 6 06:33:47 c64 SCSI error : <3 0 0 0> return code = 0x8000002
Jul 6 06:33:47 c64 sdd: Current: sense key: Aborted Command
Jul 6 06:33:47 c64 Additional sense: Scsi parity error
Jul 6 06:33:47 c64 end_request: I/O error, dev sdd, sector 234436299
Jul 6 06:33:47 c64 raid5: Disk failure on sdd3, disabling device. Operation
continuing on 3 devices

-----------------------
Active / Total Objects (% used) : 277222 / 287112 (96.6%)
Active / Total Slabs (% used) : 11137 / 11137 (100.0%)
Active / Total Caches (% used) : 77 / 118 (65.3%)
Active / Total Size (% used) : 42630.65K / 44791.06K (95.2%)
Minimum / Average / Maximum Object : 0.02K / 0.16K / 128.00K

OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
220455 216543 98% 0.09K 4899 45 19596K buffer_head
17283 14714 85% 0.52K 2469 7 9876K radix_tree_node
11250 10616 94% 0.21K 625 18 2500K dentry_cache
5940 5930 99% 0.69K 540 11 4320K shmem_inode_cache
4620 4620 100% 0.17K 210 22 840K vm_area_struct
[....]


Ordering a new disk drive now:-)

Thanks

<earny>
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