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From: Eric Sandeen <sandeen@sandeen.net>
To: Gao Xiang <hsiangkao@redhat.com>, linux-xfs@vger.kernel.org
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>,
	Eric Sandeen <sandeen@redhat.com>
Subject: Re: [PATCH v2 1/2] xfsdump: Revert "xfsdump: handle bind mount targets"
Date: Thu, 3 Jun 2021 15:29:53 -0500	[thread overview]
Message-ID: <04428916-1fdc-0958-2ead-8d10fca7f82c@sandeen.net> (raw)
In-Reply-To: <20201103023315.786103-1-hsiangkao@redhat.com>

On 11/2/20 8:33 PM, Gao Xiang wrote:
> Bind mount mntpnts will be forbided in the next commits
> instead since it's not the real rootdir.
> 
> This cannot be reverted cleanly due to several cleanup
> patches, but the logic is reverted equivalently.
> 
> This reverts commit 25195ebf107dc81b1b7cea1476764950e1d6cc9d.
> 
> Fixes: 25195ebf107d ("xfsdump: handle bind mount targets")
> Cc: Eric Sandeen <sandeen@redhat.com>
> Signed-off-by: Gao Xiang <hsiangkao@redhat.com>

Sorry this is so ridiculously late:

Reviewed-by: Eric Sandeen <sandeen@redhat.com>

> ---
>  dump/content.c | 21 ++-------------------
>  1 file changed, 2 insertions(+), 19 deletions(-)
> 
> diff --git a/dump/content.c b/dump/content.c
> index 30232d4..c11d9b4 100644
> --- a/dump/content.c
> +++ b/dump/content.c
> @@ -1382,17 +1382,10 @@ baseuuidbypass:
>  	}
>  
>  	/* figure out the ino for the root directory of the fs
> -	 * and get its struct xfs_bstat for inomap_build().  This could
> -	 * be a bind mount; don't ask for the mount point inode,
> -	 * find the actual lowest inode number in the filesystem.
> +	 * and get its xfs_bstat_t for inomap_build()
>  	 */
>  	{
>  		stat64_t rootstat;
> -		xfs_ino_t lastino = 0;
> -		int ocount = 0;
> -		struct xfs_fsop_bulkreq bulkreq;
> -
> -		/* Get the inode of the mount point */
>  		rval = fstat64(sc_fsfd, &rootstat);
>  		if (rval) {
>  			mlog(MLOG_NORMAL, _(
> @@ -1404,21 +1397,11 @@ baseuuidbypass:
>  			(struct xfs_bstat *)calloc(1, sizeof(struct xfs_bstat));
>  		assert(sc_rootxfsstatp);
>  
> -		/* Get the first valid (i.e. root) inode in this fs */
> -		bulkreq.lastip = (__u64 *)&lastino;
> -		bulkreq.icount = 1;
> -		bulkreq.ubuffer = sc_rootxfsstatp;
> -		bulkreq.ocount = &ocount;
> -		if (ioctl(sc_fsfd, XFS_IOC_FSBULKSTAT, &bulkreq) < 0) {
> +		if (bigstat_one(sc_fsfd, rootstat.st_ino, sc_rootxfsstatp) < 0) {
>  			mlog(MLOG_ERROR,
>  			      _("failed to get bulkstat information for root inode\n"));
>  			return BOOL_FALSE;
>  		}
> -
> -		if (sc_rootxfsstatp->bs_ino != rootstat.st_ino)
> -			mlog (MLOG_NORMAL | MLOG_NOTE,
> -			       _("root ino %lld differs from mount dir ino %lld, bind mount?\n"),
> -			         sc_rootxfsstatp->bs_ino, rootstat.st_ino);
>  	}
>  
>  	/* alloc a file system handle, to be used with the jdm_open()
> 

  parent reply	other threads:[~2021-06-03 20:29 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-03  2:33 Gao Xiang
2020-11-03  2:33 ` [PATCH v2 2/2] xfsdump: intercept bind mount targets Gao Xiang
2020-11-03 15:03   ` Eric Sandeen
2020-11-03 15:18     ` Gao Xiang
2020-11-03 15:33   ` [PATCH v3 " Gao Xiang
2021-06-03 20:53     ` Eric Sandeen
2021-09-27 15:07     ` Bill O'Donnell
2021-12-20 16:01     ` Masayoshi Mizuma
2021-12-20 19:58       ` Eric Sandeen
2021-06-03 20:29 ` Eric Sandeen [this message]
2021-09-27 15:05 ` [PATCH v2 1/2] xfsdump: Revert "xfsdump: handle bind mount targets" Bill O'Donnell

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