On Fri, Sep 25, 2015 at 03:07:45PM +0200, Carlos Maiolino wrote:
> Add a new inode command to xfs_io, which aims to implement a tool for query
> information about inode usage of the filesystem.
>
> This patch implements '-s' inode option, which query the filesystem for the
> physical size of the largest filesystem inode
>
> Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
> ---
> io/open.c | 81
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 81 insertions(+)
>
> diff --git a/io/open.c b/io/open.c
> index ac5a5e0..6a794ba 100644
> --- a/io/open.c
> +++ b/io/open.c
> @@ -20,6 +20,7 @@
> #include "input.h"
> #include "init.h"
> #include "io.h"
> +#include "libxfs.h"
>
> #ifndef __O_TMPFILE
> #if defined __alpha__
> @@ -44,6 +45,7 @@ static cmdinfo_t statfs_cmd;
> static cmdinfo_t chproj_cmd;
> static cmdinfo_t lsproj_cmd;
> static cmdinfo_t extsize_cmd;
> +static cmdinfo_t inode_cmd;
> static prid_t prid;
> static long extsize;
>
> @@ -750,6 +752,74 @@ statfs_f(
> return 0;
> }
>
> +static void
> +inode_help(void)
> +{
> + printf(_(
> +"\n"
> +"Query physical information about the inode"
> +"\n"
> +" -s -- Returns the physical size (in bits) of the\n"
> +" largest inode number in the filesystem\n"
> +"\n"));
> +}
> +
> +static int
> +inode_f(
> + int argc,
> + char **argv)
> +{
> + __s32 count = 0;
> + __s32 lastgrp = 0;
> + __u64 last = 0;
> + __u64 lastino = 0;
> + struct xfs_inogrp igroup[1024];
> + struct xfs_fsop_bulkreq bulkreq;
> + int c;
> + int ret_lsize = 0;
> +
> + bulkreq.lastip = &last;
> + bulkreq.icount = 1024; /* maybe an user-defined value!? */
> + bulkreq.ubuffer = &igroup;
> + bulkreq.ocount = &count;
> +
> + while ((c = getopt(argc, argv, "s")) != EOF) {
> + switch (c) {
> + case 's':
> + ret_lsize = 1;
> + break;
> + default:
> + return command_usage(&inode_cmd);
> + }
> + }
> +
> + if (ret_lsize) {
> + for (;;) {
> + if (xfsctl(file->name, file->fd, XFS_IOC_FSINUMBERS,
> + &bulkreq)) {
> + perror("XFS_IOC_FSINUMBERS");
> + exitcode = 1;
> + return 0;
> + }
> + if (count < XFS_INODES_PER_CHUNK && count > 0)
^^^ bummer :( I forgot to remove this
macro before commiting this patch, it
has been changed to 1024 in the patch
3/3
will fix this up before sending V3,
after getting more reviews on these
patches
> + lastgrp = count;
> + if (!count)
> + break;
> + }
> +
> + lastgrp--;
> + lastino = igroup[lastgrp].xi_startino +
> + xfs_highbit64(igroup[lastgrp].xi_allocmask);
> +
> + printf (_("Largest inode size: %d\n"),
> + lastino > XFS_MAXINUMBER_32 ? 64 : 32);
> +
> + }
> +
> +
> + return 0;
> +}
> +
> void
> open_init(void)
> {
> @@ -815,6 +885,16 @@ open_init(void)
> _("get/set preferred extent size (in bytes) for the open file");
> extsize_cmd.help = extsize_help;
>
> + inode_cmd.name = "inode";
> + inode_cmd.cfunc = inode_f;
> + inode_cmd.args = _("[-s]");
> + inode_cmd.argmin = 1;
> + inode_cmd.argmax = 1;
> + inode_cmd.flags = CMD_NOMAP_OK;
> + inode_cmd.oneline =
> + _("Query inode number usage in the filesystem");
> + inode_cmd.help = inode_help;
> +
> add_command(&open_cmd);
> add_command(&stat_cmd);
> add_command(&close_cmd);
> @@ -822,4 +902,5 @@ open_init(void)
> add_command(&chproj_cmd);
> add_command(&lsproj_cmd);
> add_command(&extsize_cmd);
> + add_command(&inode_cmd);
> }
> --
> 2.4.3
>
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--
Carlos
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