XFS mounting fails on MIPS

[Ajeet Yadav]

Coming back to problem, I wish to know about this problem
Linux XFS version : 2.6.34
Architecure: MIPS
I am getting the following error during mount.

XFS mounting filesystem sda2
Starting XFS recovery on filesystem: sda2 (logdev: internal)
XFS internal error XFS_WANT_CORRUPTED_GOTO at line 1518 of file
fs/xfs/xfs_alloc.c.  Caller 0x801174a0
Call Trace:
[<800050bc>] dump_stack+0x8/0x34
[<80115254>] xfs_free_ag_extent+0x128/0x7a8
[<801174a0>] xfs_free_extent+0xa0/0xcc
[<80155278>] xlog_recover_process_efi+0x15c/0x210
[<801553cc>] xlog_recover_process_efis+0xa0/0x12c
[<8015590c>] xlog_recover_finish+0x28/0xcc
[<8015d4fc>] xfs_mountfs+0x4f0/0x5d0
[<801758d8>] xfs_fs_fill_super+0x158/0x360
[<8008b67c>] get_sb_bdev+0x11c/0x1c4
[<801734e0>] xfs_fs_get_sb+0x20/0x2c
[<80089cd0>] vfs_kern_mount+0x68/0xd0
[<80089d9c>] do_kern_mount+0x54/0x118
[<800a4e98>] do_mount+0x7f0/0x86c
[<800a4fb0>] sys_mount+0x9c/0xf8
[<80002124>] stack_done+0x20/0x3c

Filesystem "sda2": XFS internal error xfs_trans_cancel at line 1161 of file
fs/xfs/xfs_trans.c.  Caller 0x801552f8

Call Trace:
[<800050bc>] dump_stack+0x8/0x34
[<801601f0>] xfs_trans_cancel+0x88/0x118
[<801552f8>] xlog_recover_process_efi+0x1dc/0x210
[<801553cc>] xlog_recover_process_efis+0xa0/0x12c
[<8015590c>] xlog_recover_finish+0x28/0xcc
[<8015d4fc>] xfs_mountfs+0x4f0/0x5d0
[<801758d8>] xfs_fs_fill_super+0x158/0x360
[<8008b67c>] get_sb_bdev+0x11c/0x1c4
[<801734e0>] xfs_fs_get_sb+0x20/0x2c
[<80089cd0>] vfs_kern_mount+0x68/0xd0
[<80089d9c>] do_kern_mount+0x54/0x118
[<800a4e98>] do_mount+0x7f0/0x86c
[<800a4fb0>] sys_mount+0x9c/0xf8
[<80002124>] stack_done+0x20/0x3c

xfs_force_shutdown(sda2,0x8) called from line 1162 of file
fs/xfs/xfs_trans.c.  Return address = 0x80160204
Filesystem "sda2": Corruption of in-memory data detected.  Shutting down
filesystem: sda2
Please umount the filesystem, and rectify the problem(s)
Failed to recover EFIs on filesystem: sda2
XFS: log mount finish failed

With Regards
Ajeet Yadav

On Tue, Nov 9, 2010 at 7:35 PM, Christoph Hellwig <hch at infradead.org> wrote:

> Hi Ajeet,
>
> On Tue, Nov 09, 2010 at 04:43:04PM +0530, Ajeet Yadav wrote:
> > True, its the same system and you were right it was cache VIPT cache
> problem
> > the cache hold the stale value even after xlog_bread() update the buffer.
> > I do not know whether its correct ways to resolve the problem, but the
> > problem no longer occur.
>
> It seems like you more less re-implemented the vmap coherency hooks
> inside XFS, hardcoded to the mips implementation.
>
> The actual helpers would looks something like:
>
> static inline void flush_kernel_vmap_range(void *addr, int size)
> {
>        dma_cache_inv(addr, size);
> }
>
> static inline void invalidate_kernel_vmap_range(void *addr, int size)
> {
>        dma_cache_inv(addr, size);
> }
>
> For some reason the kernel also expects flush_dcache_page to be
> implemented by an architecture if we want to implement these two
> (it's keyed off ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE).
>
> Can someone of the mips folks helps with this?
>
> The testcase is easy, mounting an xfs filesystem after an unclean
> shutdown on a machine with virtually indexed caches.
>
>
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