From b3b94faa5fe5968827ba0640ee9fba4b3e7f736e Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 16 Jan 2006 16:50:04 +0000 Subject: [GFS2] The core of GFS2 This patch contains all the core files for GFS2. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse --- fs/gfs2/sys.c | 640 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 640 insertions(+) create mode 100644 fs/gfs2/sys.c (limited to 'fs/gfs2/sys.c') diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c new file mode 100644 index 00000000000..75e9a3231b8 --- /dev/null +++ b/fs/gfs2/sys.c @@ -0,0 +1,640 @@ +/* + * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. + * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License v.2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "gfs2.h" +#include "lm.h" +#include "sys.h" +#include "super.h" +#include "glock.h" +#include "quota.h" + +char *gfs2_sys_margs; +spinlock_t gfs2_sys_margs_lock; + +static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) +{ + return sprintf(buf, "%s\n", sdp->sd_vfs->s_id); +} + +static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) +{ + return sprintf(buf, "%s\n", sdp->sd_fsname); +} + +static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) +{ + unsigned int count; + + down(&sdp->sd_freeze_lock); + count = sdp->sd_freeze_count; + up(&sdp->sd_freeze_lock); + + return sprintf(buf, "%u\n", count); +} + +static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) +{ + ssize_t ret = len; + int error = 0; + int n = simple_strtol(buf, NULL, 0); + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + switch (n) { + case 0: + gfs2_unfreeze_fs(sdp); + break; + case 1: + error = gfs2_freeze_fs(sdp); + break; + default: + ret = -EINVAL; + } + + if (error) + fs_warn(sdp, "freeze %d error %d", n, error); + + return ret; +} + +static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) +{ + unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); + return sprintf(buf, "%u\n", b); +} + +static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) +{ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (simple_strtol(buf, NULL, 0) != 1) + return -EINVAL; + + gfs2_lm_withdraw(sdp, + "GFS2: fsid=%s: withdrawing from cluster at user's request\n", + sdp->sd_fsname); + return len; +} + +static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, + size_t len) +{ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (simple_strtol(buf, NULL, 0) != 1) + return -EINVAL; + + gfs2_statfs_sync(sdp); + return len; +} + +static ssize_t shrink_store(struct gfs2_sbd *sdp, const char *buf, size_t len) +{ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (simple_strtol(buf, NULL, 0) != 1) + return -EINVAL; + + gfs2_gl_hash_clear(sdp, NO_WAIT); + return len; +} + +static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, + size_t len) +{ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (simple_strtol(buf, NULL, 0) != 1) + return -EINVAL; + + gfs2_quota_sync(sdp); + return len; +} + +static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, + size_t len) +{ + uint32_t id; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + id = simple_strtoul(buf, NULL, 0); + + gfs2_quota_refresh(sdp, 1, id); + return len; +} + +static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, + size_t len) +{ + uint32_t id; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + id = simple_strtoul(buf, NULL, 0); + + gfs2_quota_refresh(sdp, 0, id); + return len; +} + +struct gfs2_attr { + struct attribute attr; + ssize_t (*show)(struct gfs2_sbd *, char *); + ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); +}; + +#define GFS2_ATTR(name, mode, show, store) \ +static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) + +GFS2_ATTR(id, 0444, id_show, NULL); +GFS2_ATTR(fsname, 0444, fsname_show, NULL); +GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); +GFS2_ATTR(shrink, 0200, NULL, shrink_store); +GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); +GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); +GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); +GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); +GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); + +static struct attribute *gfs2_attrs[] = { + &gfs2_attr_id.attr, + &gfs2_attr_fsname.attr, + &gfs2_attr_freeze.attr, + &gfs2_attr_shrink.attr, + &gfs2_attr_withdraw.attr, + &gfs2_attr_statfs_sync.attr, + &gfs2_attr_quota_sync.attr, + &gfs2_attr_quota_refresh_user.attr, + &gfs2_attr_quota_refresh_group.attr, + NULL, +}; + +static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); + struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); + return a->show ? a->show(sdp, buf) : 0; +} + +static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t len) +{ + struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); + struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); + return a->store ? a->store(sdp, buf, len) : len; +} + +static struct sysfs_ops gfs2_attr_ops = { + .show = gfs2_attr_show, + .store = gfs2_attr_store, +}; + +static struct kobj_type gfs2_ktype = { + .default_attrs = gfs2_attrs, + .sysfs_ops = &gfs2_attr_ops, +}; + +static struct kset gfs2_kset = { + .subsys = &fs_subsys, + .kobj = {.name = "gfs2",}, + .ktype = &gfs2_ktype, +}; + +/* + * display struct lm_lockstruct fields + */ + +struct lockstruct_attr { + struct attribute attr; + ssize_t (*show)(struct gfs2_sbd *, char *); +}; + +#define LOCKSTRUCT_ATTR(name, fmt) \ +static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ +{ \ + return sprintf(buf, fmt, sdp->sd_lockstruct.ls_##name); \ +} \ +static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name) + +LOCKSTRUCT_ATTR(jid, "%u\n"); +LOCKSTRUCT_ATTR(first, "%u\n"); +LOCKSTRUCT_ATTR(lvb_size, "%u\n"); +LOCKSTRUCT_ATTR(flags, "%d\n"); + +static struct attribute *lockstruct_attrs[] = { + &lockstruct_attr_jid.attr, + &lockstruct_attr_first.attr, + &lockstruct_attr_lvb_size.attr, + &lockstruct_attr_flags.attr, + NULL +}; + +/* + * display struct gfs2_args fields + */ + +struct args_attr { + struct attribute attr; + ssize_t (*show)(struct gfs2_sbd *, char *); +}; + +#define ARGS_ATTR(name, fmt) \ +static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ +{ \ + return sprintf(buf, fmt, sdp->sd_args.ar_##name); \ +} \ +static struct args_attr args_attr_##name = __ATTR_RO(name) + +ARGS_ATTR(lockproto, "%s\n"); +ARGS_ATTR(locktable, "%s\n"); +ARGS_ATTR(hostdata, "%s\n"); +ARGS_ATTR(spectator, "%d\n"); +ARGS_ATTR(ignore_local_fs, "%d\n"); +ARGS_ATTR(localcaching, "%d\n"); +ARGS_ATTR(localflocks, "%d\n"); +ARGS_ATTR(debug, "%d\n"); +ARGS_ATTR(upgrade, "%d\n"); +ARGS_ATTR(num_glockd, "%u\n"); +ARGS_ATTR(posix_acl, "%d\n"); +ARGS_ATTR(quota, "%u\n"); +ARGS_ATTR(suiddir, "%d\n"); +ARGS_ATTR(data, "%d\n"); + +/* one oddball doesn't fit the macro mold */ +static ssize_t noatime_show(struct gfs2_sbd *sdp, char *buf) +{ + return sprintf(buf, "%d\n", !!test_bit(SDF_NOATIME, &sdp->sd_flags)); +} +static struct args_attr args_attr_noatime = __ATTR_RO(noatime); + +static struct attribute *args_attrs[] = { + &args_attr_lockproto.attr, + &args_attr_locktable.attr, + &args_attr_hostdata.attr, + &args_attr_spectator.attr, + &args_attr_ignore_local_fs.attr, + &args_attr_localcaching.attr, + &args_attr_localflocks.attr, + &args_attr_debug.attr, + &args_attr_upgrade.attr, + &args_attr_num_glockd.attr, + &args_attr_posix_acl.attr, + &args_attr_quota.attr, + &args_attr_suiddir.attr, + &args_attr_data.attr, + &args_attr_noatime.attr, + NULL +}; + +/* + * display counters from superblock + */ + +struct counters_attr { + struct attribute attr; + ssize_t (*show)(struct gfs2_sbd *, char *); +}; + +#define COUNTERS_ATTR_GENERAL(name, fmt, val) \ +static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ +{ \ + return sprintf(buf, fmt, val); \ +} \ +static struct counters_attr counters_attr_##name = __ATTR_RO(name) + +#define COUNTERS_ATTR_SIMPLE(name, fmt) \ + COUNTERS_ATTR_GENERAL(name, fmt, sdp->sd_##name) + +#define COUNTERS_ATTR_ATOMIC(name, fmt) \ + COUNTERS_ATTR_GENERAL(name, fmt, (unsigned int)atomic_read(&sdp->sd_##name)) + +COUNTERS_ATTR_ATOMIC(glock_count, "%u\n"); +COUNTERS_ATTR_ATOMIC(glock_held_count, "%u\n"); +COUNTERS_ATTR_ATOMIC(inode_count, "%u\n"); +COUNTERS_ATTR_ATOMIC(bufdata_count, "%u\n"); +COUNTERS_ATTR_ATOMIC(unlinked_count, "%u\n"); +COUNTERS_ATTR_ATOMIC(quota_count, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_num_gl, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_num_buf, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_num_revoke, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_num_rg, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_num_databuf, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_blks_free, "%u\n"); +COUNTERS_ATTR_GENERAL(jd_blocks, "%u\n", sdp->sd_jdesc->jd_blocks); +COUNTERS_ATTR_ATOMIC(reclaim_count, "%u\n"); +COUNTERS_ATTR_SIMPLE(log_wraps, "%llu\n"); +COUNTERS_ATTR_ATOMIC(fh2dentry_misses, "%u\n"); +COUNTERS_ATTR_ATOMIC(reclaimed, "%u\n"); +COUNTERS_ATTR_ATOMIC(log_flush_incore, "%u\n"); +COUNTERS_ATTR_ATOMIC(log_flush_ondisk, "%u\n"); +COUNTERS_ATTR_ATOMIC(glock_nq_calls, "%u\n"); +COUNTERS_ATTR_ATOMIC(glock_dq_calls, "%u\n"); +COUNTERS_ATTR_ATOMIC(glock_prefetch_calls, "%u\n"); +COUNTERS_ATTR_ATOMIC(lm_lock_calls, "%u\n"); +COUNTERS_ATTR_ATOMIC(lm_unlock_calls, "%u\n"); +COUNTERS_ATTR_ATOMIC(lm_callbacks, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_address, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_dentry, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_export, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_file, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_inode, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_super, "%u\n"); +COUNTERS_ATTR_ATOMIC(ops_vm, "%u\n"); + +static struct attribute *counters_attrs[] = { + &counters_attr_glock_count.attr, + &counters_attr_glock_held_count.attr, + &counters_attr_inode_count.attr, + &counters_attr_bufdata_count.attr, + &counters_attr_unlinked_count.attr, + &counters_attr_quota_count.attr, + &counters_attr_log_num_gl.attr, + &counters_attr_log_num_buf.attr, + &counters_attr_log_num_revoke.attr, + &counters_attr_log_num_rg.attr, + &counters_attr_log_num_databuf.attr, + &counters_attr_log_blks_free.attr, + &counters_attr_jd_blocks.attr, + &counters_attr_reclaim_count.attr, + &counters_attr_log_wraps.attr, + &counters_attr_fh2dentry_misses.attr, + &counters_attr_reclaimed.attr, + &counters_attr_log_flush_incore.attr, + &counters_attr_log_flush_ondisk.attr, + &counters_attr_glock_nq_calls.attr, + &counters_attr_glock_dq_calls.attr, + &counters_attr_glock_prefetch_calls.attr, + &counters_attr_lm_lock_calls.attr, + &counters_attr_lm_unlock_calls.attr, + &counters_attr_lm_callbacks.attr, + &counters_attr_ops_address.attr, + &counters_attr_ops_dentry.attr, + &counters_attr_ops_export.attr, + &counters_attr_ops_file.attr, + &counters_attr_ops_inode.attr, + &counters_attr_ops_super.attr, + &counters_attr_ops_vm.attr, + NULL +}; + +/* + * get and set struct gfs2_tune fields + */ + +static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) +{ + return sprintf(buf, "%u %u\n", sdp->sd_tune.gt_quota_scale_num, + sdp->sd_tune.gt_quota_scale_den); +} + +static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, + size_t len) +{ + struct gfs2_tune *gt = &sdp->sd_tune; + unsigned int x, y; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) + return -EINVAL; + + spin_lock(>->gt_spin); + gt->gt_quota_scale_num = x; + gt->gt_quota_scale_den = y; + spin_unlock(>->gt_spin); + return len; +} + +static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, + int check_zero, const char *buf, size_t len) +{ + struct gfs2_tune *gt = &sdp->sd_tune; + unsigned int x; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + x = simple_strtoul(buf, NULL, 0); + + if (check_zero && !x) + return -EINVAL; + + spin_lock(>->gt_spin); + *field = x; + spin_unlock(>->gt_spin); + return len; +} + +struct tune_attr { + struct attribute attr; + ssize_t (*show)(struct gfs2_sbd *, char *); + ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); +}; + +#define TUNE_ATTR_3(name, show, store) \ +static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store) + +#define TUNE_ATTR_2(name, store) \ +static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ +{ \ + return sprintf(buf, "%u\n", sdp->sd_tune.gt_##name); \ +} \ +TUNE_ATTR_3(name, name##_show, store) + +#define TUNE_ATTR(name, check_zero) \ +static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ +{ \ + return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ +} \ +TUNE_ATTR_2(name, name##_store) + +#define TUNE_ATTR_DAEMON(name, process) \ +static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ +{ \ + ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len); \ + wake_up_process(sdp->sd_##process); \ + return r; \ +} \ +TUNE_ATTR_2(name, name##_store) + +TUNE_ATTR(ilimit, 0); +TUNE_ATTR(ilimit_tries, 0); +TUNE_ATTR(ilimit_min, 0); +TUNE_ATTR(demote_secs, 0); +TUNE_ATTR(incore_log_blocks, 0); +TUNE_ATTR(log_flush_secs, 0); +TUNE_ATTR(jindex_refresh_secs, 0); +TUNE_ATTR(quota_warn_period, 0); +TUNE_ATTR(quota_quantum, 0); +TUNE_ATTR(atime_quantum, 0); +TUNE_ATTR(max_readahead, 0); +TUNE_ATTR(complain_secs, 0); +TUNE_ATTR(reclaim_limit, 0); +TUNE_ATTR(prefetch_secs, 0); +TUNE_ATTR(statfs_slow, 0); +TUNE_ATTR(new_files_jdata, 0); +TUNE_ATTR(new_files_directio, 0); +TUNE_ATTR(quota_simul_sync, 1); +TUNE_ATTR(quota_cache_secs, 1); +TUNE_ATTR(max_atomic_write, 1); +TUNE_ATTR(stall_secs, 1); +TUNE_ATTR(entries_per_readdir, 1); +TUNE_ATTR(greedy_default, 1); +TUNE_ATTR(greedy_quantum, 1); +TUNE_ATTR(greedy_max, 1); +TUNE_ATTR(statfs_quantum, 1); +TUNE_ATTR_DAEMON(scand_secs, scand_process); +TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process); +TUNE_ATTR_DAEMON(logd_secs, logd_process); +TUNE_ATTR_DAEMON(quotad_secs, quotad_process); +TUNE_ATTR_DAEMON(inoded_secs, inoded_process); +TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); + +static struct attribute *tune_attrs[] = { + &tune_attr_ilimit.attr, + &tune_attr_ilimit_tries.attr, + &tune_attr_ilimit_min.attr, + &tune_attr_demote_secs.attr, + &tune_attr_incore_log_blocks.attr, + &tune_attr_log_flush_secs.attr, + &tune_attr_jindex_refresh_secs.attr, + &tune_attr_quota_warn_period.attr, + &tune_attr_quota_quantum.attr, + &tune_attr_atime_quantum.attr, + &tune_attr_max_readahead.attr, + &tune_attr_complain_secs.attr, + &tune_attr_reclaim_limit.attr, + &tune_attr_prefetch_secs.attr, + &tune_attr_statfs_slow.attr, + &tune_attr_quota_simul_sync.attr, + &tune_attr_quota_cache_secs.attr, + &tune_attr_max_atomic_write.attr, + &tune_attr_stall_secs.attr, + &tune_attr_entries_per_readdir.attr, + &tune_attr_greedy_default.attr, + &tune_attr_greedy_quantum.attr, + &tune_attr_greedy_max.attr, + &tune_attr_statfs_quantum.attr, + &tune_attr_scand_secs.attr, + &tune_attr_recoverd_secs.attr, + &tune_attr_logd_secs.attr, + &tune_attr_quotad_secs.attr, + &tune_attr_inoded_secs.attr, + &tune_attr_quota_scale.attr, + &tune_attr_new_files_jdata.attr, + &tune_attr_new_files_directio.attr, + NULL +}; + +static struct attribute_group lockstruct_group = { + .name = "lockstruct", + .attrs = lockstruct_attrs +}; + +static struct attribute_group counters_group = { + .name = "counters", + .attrs = counters_attrs +}; + +static struct attribute_group args_group = { + .name = "args", + .attrs = args_attrs +}; + +static struct attribute_group tune_group = { + .name = "tune", + .attrs = tune_attrs +}; + +int gfs2_sys_fs_add(struct gfs2_sbd *sdp) +{ + int error; + + sdp->sd_kobj.kset = &gfs2_kset; + sdp->sd_kobj.ktype = &gfs2_ktype; + + error = kobject_set_name(&sdp->sd_kobj, "%s", sdp->sd_table_name); + if (error) + goto fail; + + error = kobject_register(&sdp->sd_kobj); + if (error) + goto fail; + + error = sysfs_create_group(&sdp->sd_kobj, &lockstruct_group); + if (error) + goto fail_reg; + + error = sysfs_create_group(&sdp->sd_kobj, &counters_group); + if (error) + goto fail_lockstruct; + + error = sysfs_create_group(&sdp->sd_kobj, &args_group); + if (error) + goto fail_counters; + + error = sysfs_create_group(&sdp->sd_kobj, &tune_group); + if (error) + goto fail_args; + + return 0; + + fail_args: + sysfs_remove_group(&sdp->sd_kobj, &args_group); + fail_counters: + sysfs_remove_group(&sdp->sd_kobj, &counters_group); + fail_lockstruct: + sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); + fail_reg: + kobject_unregister(&sdp->sd_kobj); + fail: + return error; +} + +void gfs2_sys_fs_del(struct gfs2_sbd *sdp) +{ + sysfs_remove_group(&sdp->sd_kobj, &tune_group); + sysfs_remove_group(&sdp->sd_kobj, &args_group); + sysfs_remove_group(&sdp->sd_kobj, &counters_group); + sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); + kobject_unregister(&sdp->sd_kobj); +} + +int gfs2_sys_init(void) +{ + gfs2_sys_margs = NULL; + spin_lock_init(&gfs2_sys_margs_lock); + return kset_register(&gfs2_kset); +} + +void gfs2_sys_uninit(void) +{ + kfree(gfs2_sys_margs); + kset_unregister(&gfs2_kset); +} + -- cgit v1.2.3