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Date: Thu, 2 Mar 2017 15:05:41 -0700
From: Andreas Dilger <adilger@...ger.ca>
To: "Darrick J. Wong" <darrick.wong@...cle.com>
Cc: tytso@....edu, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 2/3] e2info: create a tool to display ext4 fs geometry
online
> On Mar 2, 2017, at 2:50 PM, Darrick J. Wong <darrick.wong@...cle.com> wrote:
>
> On Thu, Mar 02, 2017 at 12:49:46PM -0700, Andreas Dilger wrote:
>> On Mar 1, 2017, at 9:52 PM, Darrick J. Wong <darrick.wong@...cle.com> wrote:
>>>
>>> From: Darrick J. Wong <darrick.wong@...cle.com>
>>>
>>> Create e2info, which reports the fs geometry of an online ext4 filesystem.
>>
>> Besides providing a place to call the new EXT4_IOC_FSGEOMETRY ioctl, I
>> don't see how this is much different from "dumpe2fs -h"?
>
> Eh, screw it, I'm walking away from this whole FSGEOMETRY ioctl patchset.
> Too much uphill friction, insufficient motivation...
I can see the FSGEOMETRY ioctl could be useful for applications, especially
if this is common across filesystems. My main objection was to having a new
tool in e2fsprogs for the sole purpose of calling the ioctl.
Cheers, Andreas
>>
>>> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
>>> ---
>>> configure | 4 +
>>> configure.ac | 3 +
>>> lib/ext2fs/ext2_fs.h | 34 ++++++++
>>> misc/Makefile.in | 30 ++++++-
>>> misc/e2info.8.in | 64 ++++++++++++++++
>>> misc/e2info.c | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++
>>> 6 files changed, 336 insertions(+), 4 deletions(-)
>>> create mode 100644 misc/e2info.8.in
>>> create mode 100644 misc/e2info.c
>>>
>>>
>>> diff --git a/configure b/configure
>>> index 5f7b429..b553da1 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -642,6 +642,7 @@ root_prefix
>>> UNIX_CMT
>>> CYGWIN_CMT
>>> LINUX_CMT
>>> +E2INFO_CMT
>>> UNI_DIFF_OPTS
>>> SEM_INIT_LIB
>>> FUSE_CMT
>>> @@ -13663,13 +13664,16 @@ fi
>>> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $UNI_DIFF_OPTS" >&5
>>> $as_echo "$UNI_DIFF_OPTS" >&6; }
>>>
>>> +E2INFO_CMT="#"
>>> case "$host_os" in
>>> linux*)
>>>
>>> $as_echo "#define HAVE_EXT2_IOCTLS 1" >>confdefs.h
>>>
>>> + E2INFO_CMT=
>>> ;;
>>> esac
>>> +
>>> LINUX_CMT="#"
>>> CYGWIN_CMT="#"
>>> UNIX_CMT=
>>> diff --git a/configure.ac b/configure.ac
>>> index 9da7b86..bf613fd 100644
>>> --- a/configure.ac
>>> +++ b/configure.ac
>>> @@ -1260,11 +1260,14 @@ AC_SUBST(UNI_DIFF_OPTS)
>>> dnl
>>> dnl We use the EXT2 ioctls only under Linux
>>> dnl
>>> +E2INFO_CMT="#"
>>> case "$host_os" in
>>> linux*)
>>> AC_DEFINE(HAVE_EXT2_IOCTLS, 1, [Define to 1 if Ext2 ioctls present])
>>> + E2INFO_CMT=
>>> ;;
>>> esac
>>> +AC_SUBST(E2INFO_CMT)
>>> dnl
>>> dnl OS-specific uncomment control
>>> dnl
>>> diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
>>> index 27a7d3a..bad7648 100644
>>> --- a/lib/ext2fs/ext2_fs.h
>>> +++ b/lib/ext2fs/ext2_fs.h
>>> @@ -372,6 +372,40 @@ struct ext4_new_group_input {
>>> #define EXT4_IOC_GROUP_ADD _IOW('f', 8,struct ext4_new_group_input)
>>> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
>>>
>>> +/* ext4 fs geometry. */
>>> +struct ext4_fsop_geom {
>>> + __u32 efg_blocksize; /* filesystem (data) block size */
>>> + __u32 efg_bgblocks; /* fsblocks in an AG */
>>> + __u32 efg_bgcount; /* number of allocation groups */
>>> + __u32 efg_logblocks; /* fsblocks in the log */
>>> + __u32 efg_resvblocks; /* number of reserved blocks */
>>> + __u32 efg_inodesize; /* inode size in bytes */
>>> + __u32 efg_bg_iblocks; /* inode blocks per AG */
>>> + __u32 efg_flags; /* superblock version flags */
>>> + __u64 efg_inodecount; /* inode count */
>>> + __u64 efg_blockcount; /* fsblocks in filesystem */
>>> + unsigned char efg_uuid[16]; /* unique id of the filesystem */
>>> + __u32 efg_sunit; /* stripe unit, fsblocks */
>>> + __u32 efg_swidth; /* stripe width, fsblocks */
>>> + __u32 efg_clustersize;/* fs cluster size */
>>> + __u32 efg_flexbgsize; /* number of bg's in a flexbg */
>>> + __u64 efg_resv[6];
>>> +};
>>> +
>>> +#define EXT4_FSOP_GEOM_FLAGS_ATTR 0x00001 /* extended attr in use */
>>> +#define EXT4_FSOP_GEOM_FLAGS_NLINK 0x00002 /* 32-bit nlink values */
>>> +#define EXT4_FSOP_GEOM_FLAGS_QUOTA 0x00004 /* quotas enabled */
>>> +#define EXT4_FSOP_GEOM_FLAGS_PROJQ 0x00008 /* project quotas */
>>> +#define EXT4_FSOP_GEOM_FLAGS_META_CSUM 0x00010 /* metadata checksums */
>>> +#define EXT4_FSOP_GEOM_FLAGS_FTYPE 0x00020 /* inode directory types */
>>> +#define EXT4_FSOP_GEOM_FLAGS_64BIT 0x00040 /* 64-bit support */
>>> +#define EXT4_FSOP_GEOM_FLAGS_INLINEDATA 0x00080 /* inline data */
>>> +#define EXT4_FSOP_GEOM_FLAGS_ENCRYPT 0x00100 /* encrypted files */
>>> +#define EXT4_FSOP_GEOM_FLAGS_LARGEDIR 0x00200 /* large directories */
>>> +#define EXT4_FSOP_GEOM_FLAGS_EXTENTS 0x00400 /* extents */
>>> +
>>> +#define EXT4_IOC_FSGEOMETRY _IOR ('f', 19, struct ext4_fsop_geom)
>>> +
>>> /*
>>> * Structure of an inode on the disk
>>> */
>>> diff --git a/misc/Makefile.in b/misc/Makefile.in
>>> index 467c15d..311aa57 100644
>>> --- a/misc/Makefile.in
>>> +++ b/misc/Makefile.in
>>> @@ -32,14 +32,19 @@ INSTALL = @INSTALL@
>>>
>>> @FUSE_CMT@...E_PROG= fuse2fs
>>>
>>> +@...NFO_CMT@...NFO_PROG= e2info
>>> +@...NFO_CMT@...NFO_MAN= e2info.8
>>> +
>>> SPROGS= mke2fs badblocks tune2fs dumpe2fs $(BLKID_PROG) logsave \
>>> $(E2IMAGE_PROG) @FSCK_PROG@ e2undo
>>> USPROGS= mklost+found filefrag e2freefrag $(UUIDD_PROG) \
>>> - $(E4DEFRAG_PROG) $(E4CRYPT_PROG) $(FUSE_PROG)
>>> + $(E4DEFRAG_PROG) $(E4CRYPT_PROG) $(FUSE_PROG) \
>>> + $(E2INFO_PROG)
>>> SMANPAGES= tune2fs.8 mklost+found.8 mke2fs.8 dumpe2fs.8 badblocks.8 \
>>> e2label.8 $(FINDFS_MAN) $(BLKID_MAN) $(E2IMAGE_MAN) \
>>> logsave.8 filefrag.8 e2freefrag.8 e2undo.8 \
>>> - $(UUIDD_MAN) $(E4DEFRAG_MAN) $(E4CRYPT_MAN) @FSCK_MAN@
>>> + $(UUIDD_MAN) $(E4DEFRAG_MAN) $(E4CRYPT_MAN) @FSCK_MAN@ \
>>> + $(E2INFO_MAN)
>>> FMANPAGES= mke2fs.conf.5 ext4.5
>>>
>>> UPROGS= chattr lsattr @UUID_CMT@ uuidgen
>>> @@ -68,6 +73,7 @@ E4CRYPT_OBJS= e4crypt.o
>>> E2FREEFRAG_OBJS= e2freefrag.o
>>> E2FUZZ_OBJS= e2fuzz.o
>>> FUSE2FS_OBJS= fuse2fs.o journal.o recovery.o revoke.o
>>> +E2INFO_OBJS= e2info.o
>>>
>>> PROFILED_TUNE2FS_OBJS= profiled/tune2fs.o profiled/util.o
>>> PROFILED_MKLPF_OBJS= profiled/mklost+found.o
>>> @@ -90,8 +96,9 @@ PROFILED_E2FREEFRAG_OBJS= profiled/e2freefrag.o
>>> PROFILED_E2UNDO_OBJS= profiled/e2undo.o
>>> PROFILED_E4DEFRAG_OBJS= profiled/e4defrag.o
>>> PROFILED_E4CRYPT_OBJS= profiled/e4crypt.o
>>> -PROFILED_FUSE2FS_OJBS= profiled/fuse2fs.o profiled/journal.o \
>>> +PROFILED_FUSE2FS_OBJS= profiled/fuse2fs.o profiled/journal.o \
>>> profiled/recovery.o profiled/revoke.o
>>> +PROFILED_E2INFO_OBJS= profiled/e2info.o
>>>
>>> SRCS= $(srcdir)/tune2fs.c $(srcdir)/mklost+found.c $(srcdir)/mke2fs.c $(srcdir)/mk_hugefiles.c \
>>> $(srcdir)/chattr.c $(srcdir)/lsattr.c $(srcdir)/dumpe2fs.c \
>>> @@ -102,7 +109,7 @@ SRCS= $(srcdir)/tune2fs.c $(srcdir)/mklost+found.c $(srcdir)/mke2fs.c $(srcdir)/
>>> $(srcdir)/e2freefrag.c $(srcdir)/create_inode.c \
>>> $(srcdir)/fuse2fs.c \
>>> $(srcdir)/../debugfs/journal.c $(srcdir)/../e2fsck/revoke.c \
>>> - $(srcdir)/../e2fsck/recovery.c
>>> + $(srcdir)/../e2fsck/recovery.c $(srcdir)/e2info.c
>>>
>>> LIBS= $(LIBEXT2FS) $(LIBCOM_ERR) $(LIBSUPPORT)
>>> DEPLIBS= $(LIBEXT2FS) $(DEPLIBCOM_ERR) $(DEPLIBSUPPORT)
>>> @@ -391,6 +398,11 @@ fuse2fs: $(FUSE2FS_OBJS) $(DEPLIBS) $(DEPLIBBLKID) $(DEPLIBUUID) \
>>> $(LIBFUSE) $(LIBBLKID) $(LIBUUID) $(LIBEXT2FS) $(LIBINTL) \
>>> $(CLOCK_GETTIME_LIB) $(SYSLIBS)
>>>
>>> +e2info: $(E2INFO_OBJS) $(DEPLIBS)
>>> + $(E) " LD $@"
>>> + $(Q) $(CC) $(ALL_LDFLAGS) -o e2info $(E2INFO_OBJS) $(LIBINTL) \
>>> + $(SYSLIBS)
>>> +
>>> journal.o: $(srcdir)/../debugfs/journal.c
>>> $(E) " CC $@"
>>> $(Q) $(CC) -c $(JOURNAL_CFLAGS) -I$(srcdir) \
>>> @@ -411,6 +423,10 @@ tst_ismounted: $(srcdir)/ismounted.c $(STATIC_LIBEXT2FS) $(DEPLIBCOM_ERR)
>>> $(CC) -o tst_ismounted $(srcdir)/ismounted.c -DDEBUG $(ALL_CFLAGS) \
>>> $(LIBCOM_ERR) $(SYSLIBS)
>>>
>>> +e2info.8: $(DEP_SUBSTITUTE) $(srcdir)/e2info.8.in
>>> + $(E) " SUBST $@"
>>> + $(Q) $(SUBSTITUTE_UPTIME) $(srcdir)/e2info.8.in e2info.8
>>> +
>>> tune2fs.8: $(DEP_SUBSTITUTE) $(srcdir)/tune2fs.8.in
>>> $(E) " SUBST $@"
>>> $(Q) $(SUBSTITUTE_UPTIME) $(srcdir)/tune2fs.8.in tune2fs.8
>>> @@ -844,3 +860,9 @@ recovery.o: $(srcdir)/../e2fsck/recovery.c $(srcdir)/../e2fsck/jfs_user.h \
>>> $(top_srcdir)/lib/support/quotaio_tree.h \
>>> $(top_srcdir)/lib/ext2fs/kernel-jbd.h $(top_srcdir)/lib/ext2fs/jfs_compat.h \
>>> $(top_srcdir)/lib/ext2fs/kernel-list.h
>>> +e2info.o: $(srcdir)/e2info.c $(top_builddir)/lib/config.h \
>>> + $(top_builddir)/lib/dirpaths.h $(top_srcdir)/lib/ext2fs/ext2fs.h \
>>> + $(top_builddir)/lib/ext2fs/ext2_types.h $(top_srcdir)/lib/ext2fs/ext2_fs.h \
>>> + $(top_srcdir)/lib/ext2fs/ext3_extents.h $(top_srcdir)/lib/et/com_err.h \
>>> + $(top_srcdir)/lib/ext2fs/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
>>> + $(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/bitops.h
>>> diff --git a/misc/e2info.8.in b/misc/e2info.8.in
>>> new file mode 100644
>>> index 0000000..c7f580f
>>> --- /dev/null
>>> +++ b/misc/e2info.8.in
>>> @@ -0,0 +1,64 @@
>>> +.\" -*- nroff -*-
>>> +.\" Copyright 2017 Oracle Inc. All Rights Reserved.
>>> +.\" This file may be copied under the terms of the GNU Public License.
>>> +.\"
>>> +.\" Verbatim blocks taken from openssl req manpage content
>>> +.de Vb \" Begin verbatim text
>>> +.ft CW
>>> +.nf
>>> +.ne \\$1
>>> +..
>>> +.de Ve \" End verbatim text
>>> +.ft R
>>> +.fi
>>> +..
>>> +
>>> +.TH E2INFO 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
>>> +.SH NAME
>>> +e2info \- Display information about a mounted ext4 filesystem
>>> +.SH SYNOPSIS
>>> +.B e2info
>>> +.I mount-point
>>> +.br
>>> +.B e2info \-V
>>> +.SH DESCRIPTION
>>> +Prints the filesystem geometry of an ext4 filesystem. If the mounted
>>> +filesystem is an ext2 or ext3 filesystem mounted with the ext4 driver,
>>> +the geometry will be displayed.
>>> +.SH "EXAMPLES"
>>> +
>>> +Understanding e2info output.
>>> +.PP
>>> +Suppose one has the following "e2info /dev/sda" output:
>>> +.PP
>>> +.RS 2
>>> +.Vb
>>> +\&meta-data=/dev/loop0 isize=256 bgcount=14808 bgsize=32768 blks
>>> +\& = attr=1 quota=0 pquota=0
>>> +\& = crc=0 64bit=0 inlinedata=0 extents=1
>>> +\& = flexbg=16
>>> +\&data = bsize=4096 blocks=485198848 bg_iblocks=512
>>> +\& = sunit=32 swidth=128 blks clustersize=0
>>> +\& = encrypt=0
>>> +\&naming = bsize=4096 largedir=0 ftype=1 nlink=1
>>> +\&log = bsize=4096 blocks=32768
>>> +.Ve
>>> +.RE
>>> +.PP
>>> +
>>> +Here, the data section of the output indicates "bsize=4096",
>>> +meaning the data block size for this filesystem is 4096 bytes.
>>> +This section also shows "sunit=32 swidth=128 blks", which means
>>> +the stripe unit is 32*4096 bytes = 128 kibibytes and the stripe
>>> +width is 128*4096 bytes = 512 kibibytes.
>>> +A single stripe of this filesystem therefore consists
>>> +of four stripe units (128 blocks / 32 blocks per unit).
>>> +Note also that "flexbg=16", which means that this filesystem has
>>> +512MB flex block groups.
>>> +That is the upper limit of how much physical disk space can be mapped
>>> +into a file.
>>> +.SH SEE ALSO
>>> +.BR mkfs.ext4 (8),
>>> +.BR md (4),
>>> +.BR lvm (8),
>>> +.BR mount (8).
>>> diff --git a/misc/e2info.c b/misc/e2info.c
>>> new file mode 100644
>>> index 0000000..675f005
>>> --- /dev/null
>>> +++ b/misc/e2info.c
>>> @@ -0,0 +1,205 @@
>>> +/*
>>> + * Copyright (c) 2017 Oracle.
>>> + * All Rights Reserved.
>>> + *
>>> + * This program is free software; you can redistribute it and/or
>>> + * modify it under the terms of the GNU General Public License as
>>> + * published by the Free Software Foundation.
>>> + *
>>> + * This program is distributed in the hope that it would be useful,
>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>> + * GNU General Public License for more details.
>>> + *
>>> + * You should have received a copy of the GNU General Public License
>>> + * along with this program; if not, write the Free Software Foundation,
>>> + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
>>> + */
>>> +#include "config.h"
>>> +#include <stdio.h>
>>> +#include <stdlib.h>
>>> +#include <string.h>
>>> +#include <libgen.h>
>>> +#include <unistd.h>
>>> +#include <sys/ioctl.h>
>>> +#include <sys/types.h>
>>> +#include <sys/stat.h>
>>> +#include <fcntl.h>
>>> +#include <errno.h>
>>> +#include <mntent.h>
>>> +#include <limits.h>
>>> +
>>> +#include "ext2fs/ext2_fs.h"
>>> +
>>> +#include "../version.h"
>>> +#include "support/nls-enable.h"
>>> +
>>> +static const char *progname = "e2info";
>>> +
>>> +static void
>>> +usage(void)
>>> +{
>>> + fprintf(stderr, _(
>>> +"Usage: %s [options] mountpoint\n\n\
>>> + -V print version information\n"),
>>> + progname);
>>> + exit(2);
>>> +}
>>> +
>>> +#define PROC_MOUNTS "/proc/mounts"
>>> +int
>>> +find_datadev(
>>> + const char *arg,
>>> + char *datadev,
>>> + char *mntpoint)
>>> +{
>>> + struct mntent *mnt;
>>> + FILE *mtp;
>>> + char *mtab_file;
>>> + char rmnt_fsname[PATH_MAX], rmnt_dir[PATH_MAX];
>>> + struct stat sbuf;
>>> + dev_t fd_dev;
>>> +
>>> + if (stat(arg, &sbuf) < 0)
>>> + return errno;
>>> + /*
>>> + * We want to match st_rdev if the path provided is a device
>>> + * special file. Otherwise we are looking for the the
>>> + * device id for the containing filesystem, in st_dev.
>>> + */
>>> + if (S_ISBLK(sbuf.st_mode) || S_ISCHR(sbuf.st_mode))
>>> + fd_dev = sbuf.st_rdev;
>>> + else
>>> + fd_dev = sbuf.st_dev;
>>> +
>>> + mtab_file = PROC_MOUNTS;
>>> + if (access(mtab_file, R_OK) != 0)
>>> + mtab_file = MOUNTED;
>>> +
>>> + if ((mtp = setmntent(mtab_file, "r")) == NULL)
>>> + return ENOENT;
>>> +
>>> + while ((mnt = getmntent(mtp)) != NULL) {
>>> + if (!realpath(mnt->mnt_dir, rmnt_dir))
>>> + continue;
>>> + if (!realpath(mnt->mnt_fsname, rmnt_fsname))
>>> + continue;
>>> +
>>> + if (stat(rmnt_fsname, &sbuf) < 0)
>>> + continue;
>>> + if (sbuf.st_rdev == fd_dev) {
>>> + strncpy(datadev, rmnt_fsname, PATH_MAX);
>>> + strncpy(mntpoint, rmnt_dir, PATH_MAX);
>>> + break;
>>> + }
>>> + }
>>> + endmntent(mtp);
>>> + return 0;
>>> +}
>>> +
>>> +int
>>> +main(int argc, char **argv)
>>> +{
>>> + struct ext4_fsop_geom geo;
>>> + char *progname;
>>> + int fd;
>>> + int c;
>>> + int attr_enabled;
>>> + int nlink_enabled;
>>> + int quota_enabled;
>>> + int projquota_enabled;
>>> + int metacrc_enabled;
>>> + int ftype_enabled;
>>> + int is_64bit;
>>> + int inlinedata_enabled;
>>> + int encrypt_enabled;
>>> + int largedir_enabled;
>>> + int extents_enabled;
>>> + char datadev[PATH_MAX];
>>> + char mntpoint[PATH_MAX];
>>> +
>>> + progname = basename(argv[0]);
>>> +#ifdef ENABLE_NLS
>>> + setlocale(LC_ALL, "");
>>> + bindtextdomain(PACKAGE, LOCALEDIR);
>>> + textdomain(PACKAGE);
>>> +#endif
>>> +
>>> + while ((c = getopt(argc, argv, "V")) != EOF) {
>>> + switch (c) {
>>> + case 'V':
>>> + printf(_("%s version %s\n"), progname, VERSION);
>>> + exit(0);
>>> + case '?':
>>> + default:
>>> + usage();
>>> + }
>>> + }
>>> + if (argc - optind != 1)
>>> + usage();
>>> +
>>> + fd = open(argv[optind], O_RDONLY);
>>> + if (fd < 0) {
>>> + perror(argv[optind]);
>>> + return 1;
>>> + }
>>> +
>>> + if (find_datadev(argv[optind], datadev, mntpoint)) {
>>> + perror("find_datadev");
>>> + strncpy(datadev, argv[optind], PATH_MAX);
>>> + strncpy(mntpoint, argv[optind], PATH_MAX);
>>> + }
>>> +
>>> + close(fd);
>>> + fd = open(mntpoint, O_RDONLY);
>>> + if (fd < 0) {
>>> + perror(mntpoint);
>>> + return 1;
>>> + }
>>> +
>>> + /* get the current filesystem size & geometry */
>>> + if (ioctl(fd, EXT4_IOC_FSGEOMETRY, &geo) < 0) {
>>> + fprintf(stderr, _(
>>> + "%s: cannot determine geometry of filesystem"
>>> + " mounted at %s: %s\n"),
>>> + progname, argv[optind], strerror(errno));
>>> + exit(1);
>>> + }
>>> +
>>> + attr_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_ATTR ? 1 : 0;
>>> + nlink_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_NLINK ? 1 : 0;
>>> + quota_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_QUOTA ? 1 : 0;
>>> + projquota_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_PROJQ ? 1 : 0;
>>> + metacrc_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_META_CSUM ? 1 : 0;
>>> + ftype_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_FTYPE ? 1 : 0;
>>> + is_64bit = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_64BIT ? 1 : 0;
>>> + inlinedata_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_INLINEDATA ? 1 : 0;
>>> + encrypt_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_ENCRYPT ? 1 : 0;
>>> + largedir_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_LARGEDIR ? 1 : 0;
>>> + extents_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_EXTENTS ? 1 : 0;
>>> +
>>> + printf(_(
>>> + "meta-data=%-22s isize=%-6u bgcount=%u bgsize=%u blks\n"
>>> + " =%-22s attr=%-7u quota=%u pquota=%u\n"
>>> + " =%-22s crc=%-8u 64bit=%u inlinedata=%u extents=%u\n"
>>> + " =%-22s flexbg=%u\n"
>>> + "data =%-22s bsize=%-6u blocks=%llu bg_iblocks=%u\n"
>>> + " =%-22s sunit=%-6u swidth=%u blks clustersize=%u\n"
>>> + " =%-22s encrypt=%u\n"
>>> + "naming =%-22s bsize=%-6u largedir=%d ftype=%d nlink=%u\n"
>>> + "log =%-22s bsize=%-6u blocks=%u\n"),
>>> + datadev, geo.efg_inodesize, geo.efg_bgcount, geo.efg_bgblocks,
>>> + "", attr_enabled, quota_enabled, projquota_enabled,
>>> + "", metacrc_enabled, is_64bit, inlinedata_enabled,
>>> + extents_enabled,
>>> + "", geo.efg_flexbgsize,
>>> + "", geo.efg_blocksize, (unsigned long long)geo.efg_blockcount,
>>> + geo.efg_bg_iblocks,
>>> + "", geo.efg_sunit, geo.efg_swidth, geo.efg_clustersize,
>>> + "", encrypt_enabled,
>>> + "", geo.efg_blocksize, largedir_enabled, ftype_enabled,
>>> + nlink_enabled,
>>> + "", geo.efg_blocksize, geo.efg_logblocks);
>>> +
>>> + exit(0);
>>> +}
>>>
>>
>>
>> Cheers, Andreas
>>
>>
>>
>>
>>
>
>
Cheers, Andreas
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