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ååï ãxfs_metadump xfs_mdrestore xfsdump xfsrestoreã

To: "Jeff Liu" <jeff.liu@xxxxxxxxxx>, "xfs" <xfs@xxxxxxxxxxx>
Subject: ååï ãxfs_metadump xfs_mdrestore xfsdump xfsrestoreã
From: "Stor??" <289471341@xxxxxx>
Date: Tue, 17 Dec 2013 15:45:37 +0800
Delivered-to: xfs@xxxxxxxxxxx
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References: <tencent_316F3CDD1B9D21DF326147BD@xxxxxx> <52AFFC69.7010007@xxxxxxxxxx>
 
 thank you.
1.  XFS internal error XFS_WANT_CORRUPTED_GOTO at line 1676 of file fs/xfs/xfs_alloc.c.  Caller 0xffffffffa023496d
Pid: 7579, comm: smbd Tainted: G          2.6.27.19-5-default #7
Call Trace:
 [<ffffffff8020d899>] show_trace_log_lvl+0x41/0x58
 [<ffffffff8020deff>] dump_stack+0x69/0x6f
 [<ffffffffa023308f>] xfs_free_ag_extent+0x45a/0x6bb [xfs]
 [<ffffffffa023496d>] xfs_free_extent+0xa9/0xc9 [xfs]
 [<ffffffffa023d446>] xfs_bmap_finish+0xee/0x15f [xfs]
 [<ffffffffa025d647>] xfs_itruncate_finish+0x190/0x2ba [xfs]
 [<ffffffffa027626d>] xfs_inactive+0x216/0x450 [xfs]
 [<ffffffffa0280e01>] xfs_fs_clear_inode+0xb0/0xf4 [xfs]
 [<ffffffff802bca41>] clear_inode+0x75/0xcc
 [<ffffffff802bcbb5>] generic_delete_inode+0xd6/0x14e
 [<ffffffff802b476f>] do_unlinkat+0xda/0x14d
 [<ffffffff8020befb>] system_call_fastpath+0x16/0x1b
 [<00007f6af6256b77>] 0x7f6af6256b77
xfs_force_shutdown(dm-1,0x8) called from line 4269 of file fs/xfs/xfs_bmap.c.  Return address = 0xffffffffa023d47b
Filesystem "dm-1": Corruption of in-memory data detected.  Shutting down filesystem: dm-1
Please umount the filesystem, and rectify the problem(s)
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
Filesystem "dm-1": xfs_log_force: error 5 returned.
 
Why is this so,
In order to protect the data.Which command with the backup file system. xfs_dump or xfs_metadump.
------------------ ååéä ------------------
åää: "Jeff Liu";<jeff.liu@xxxxxxxxxx>;
åéæé: 2013å12æ17æ(ææä) äå3:25
æää: "StorÂ"<289471341@xxxxxx>; "xfs"<xfs@xxxxxxxxxxx>;
äé: Re: ãxfs_metadump xfs_mdrestore xfsdump xfsrestoreã

On 12/17 2013 14:46 PM, Stor?? wrote:
> hi:
>   xfsdump and xfs_metadump difference
> xfs_mdrestore and xfsrestore difference
Please ask man page for details.

In short, xfsdump is used to perform an incremental dump of an XFS file
system.  corresponding, xfsrestore is used to restore the file system back
from the dumps.

xfs_metadump/xfs_mdrestore are used to dump/restore filesystems metadatas,
but they are used for debug purpose only.

Thanks,
-Jeff
.
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