From: Darrick J. Wong <djwong@xxxxxxxxxx> Add a new 'aginfo' command to xfs_io so that we can display allocation group geometry. Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- io/Makefile | 1 io/aginfo.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++ io/init.c | 1 io/io.h | 1 man/man8/xfs_io.8 | 12 +++++ 5 files changed, 134 insertions(+) create mode 100644 io/aginfo.c diff --git a/io/Makefile b/io/Makefile index c33d57f5e10b8f..8f835ec71fd768 100644 --- a/io/Makefile +++ b/io/Makefile @@ -9,6 +9,7 @@ LTCOMMAND = xfs_io LSRCFILES = xfs_bmap.sh xfs_freeze.sh xfs_mkfile.sh xfs_property HFILES = init.h io.h CFILES = \ + aginfo.c \ attr.c \ bmap.c \ bulkstat.c \ diff --git a/io/aginfo.c b/io/aginfo.c new file mode 100644 index 00000000000000..6cbfcb8de35523 --- /dev/null +++ b/io/aginfo.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2021-2024 Oracle. All rights reserved. + * Author: Darrick J. Wong <djwong@xxxxxxxxxx> + */ +#include "platform_defs.h" +#include "libxfs.h" +#include "command.h" +#include "input.h" +#include "init.h" +#include "io.h" +#include "libfrog/logging.h" +#include "libfrog/paths.h" +#include "libfrog/fsgeom.h" + +static cmdinfo_t aginfo_cmd; + +static int +report_aginfo( + struct xfs_fd *xfd, + xfs_agnumber_t agno) +{ + struct xfs_ag_geometry ageo = { 0 }; + int ret; + + ret = -xfrog_ag_geometry(xfd->fd, agno, &ageo); + if (ret) { + xfrog_perror(ret, "aginfo"); + return 1; + } + + printf(_("AG: %u\n"), ageo.ag_number); + printf(_("Blocks: %u\n"), ageo.ag_length); + printf(_("Free Blocks: %u\n"), ageo.ag_freeblks); + printf(_("Inodes: %u\n"), ageo.ag_icount); + printf(_("Free Inodes: %u\n"), ageo.ag_ifree); + printf(_("Sick: 0x%x\n"), ageo.ag_sick); + printf(_("Checked: 0x%x\n"), ageo.ag_checked); + printf(_("Flags: 0x%x\n"), ageo.ag_flags); + + return 0; +} + +/* Display AG status. */ +static int +aginfo_f( + int argc, + char **argv) +{ + struct xfs_fd xfd = XFS_FD_INIT(file->fd); + unsigned long long x; + xfs_agnumber_t agno = NULLAGNUMBER; + int c; + int ret = 0; + + ret = -xfd_prepare_geometry(&xfd); + if (ret) { + xfrog_perror(ret, "xfd_prepare_geometry"); + exitcode = 1; + return 1; + } + + while ((c = getopt(argc, argv, "a:")) != EOF) { + switch (c) { + case 'a': + errno = 0; + x = strtoll(optarg, NULL, 10); + if (!errno && x >= NULLAGNUMBER) + errno = ERANGE; + if (errno) { + perror("aginfo"); + return 1; + } + agno = x; + break; + default: + return command_usage(&aginfo_cmd); + } + } + + if (agno != NULLAGNUMBER) { + ret = report_aginfo(&xfd, agno); + } else { + for (agno = 0; !ret && agno < xfd.fsgeom.agcount; agno++) { + ret = report_aginfo(&xfd, agno); + } + } + + return ret; +} + +static void +aginfo_help(void) +{ + printf(_( +"\n" +"Report allocation group geometry.\n" +"\n" +" -a agno -- Report on the given allocation group.\n" +"\n")); + +} + +static cmdinfo_t aginfo_cmd = { + .name = "aginfo", + .cfunc = aginfo_f, + .argmin = 0, + .argmax = -1, + .args = "[-a agno]", + .flags = CMD_NOMAP_OK, + .help = aginfo_help, +}; + +void +aginfo_init(void) +{ + aginfo_cmd.oneline = _("Get XFS allocation group state."); + add_command(&aginfo_cmd); +} diff --git a/io/init.c b/io/init.c index 5727f73515a6a2..4831deae1b2683 100644 --- a/io/init.c +++ b/io/init.c @@ -44,6 +44,7 @@ init_cvtnum( static void init_commands(void) { + aginfo_init(); attr_init(); bmap_init(); bulkstat_init(); diff --git a/io/io.h b/io/io.h index 4daedac06419ae..d99065582057de 100644 --- a/io/io.h +++ b/io/io.h @@ -155,3 +155,4 @@ extern void crc32cselftest_init(void); extern void bulkstat_init(void); void exchangerange_init(void); void fsprops_init(void); +void aginfo_init(void); diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8 index 4673b071901c28..31c81efed8f99b 100644 --- a/man/man8/xfs_io.8 +++ b/man/man8/xfs_io.8 @@ -1242,6 +1242,18 @@ .SH MEMORY MAPPED I/O COMMANDS for the current memory mapping. .SH FILESYSTEM COMMANDS +.TP +.BI "aginfo [ \-a " agno " ]" +Show information about or update the state of allocation groups. +.RE +.RS 1.0i +.PD 0 +.TP +.BI \-a +Act only on a specific allocation group. +.PD +.RE + .TP .BI "bulkstat [ \-a " agno " ] [ \-d ] [ \-e " endino " ] [ \-m ] [ \-n " batchsize " ] [ \-q ] [ \-s " startino " ] [ \-v " version" ] Display raw stat information about a bunch of inodes in an XFS filesystem.