X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flproc_lmv.c;h=6a3b128aeabc20564a6f5c7b79d80cd515f383c0;hb=41998544b8a34b3c385f2a6adb7ebc01ba496182;hp=d15f419074f3629bc080350d50c45858288bb3e6;hpb=70e80ade90af09300396706b8910e196a7928520;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lproc_lmv.c b/lustre/lmv/lproc_lmv.c index d15f419..6a3b128 100644 --- a/lustre/lmv/lproc_lmv.c +++ b/lustre/lmv/lproc_lmv.c @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -16,8 +14,8 @@ * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see [sun.com URL with a - * copy of GPLv2]. + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or @@ -26,8 +24,10 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2012, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -49,8 +49,8 @@ static struct lprocfs_vars lprocfs_obd_vars[] = { {0} }; static int lmv_rd_numobd(char *page, char **start, off_t off, int count, int *eof, void *data) { - struct obd_device *dev = (struct obd_device*)data; - struct lmv_desc *desc; + struct obd_device *dev = (struct obd_device*)data; + struct lmv_desc *desc; LASSERT(dev != NULL); desc = &dev->u.lmv.desc; @@ -59,11 +59,84 @@ static int lmv_rd_numobd(char *page, char **start, off_t off, int count, } +static const char *placement_name[] = { + [PLACEMENT_CHAR_POLICY] = "CHAR", + [PLACEMENT_NID_POLICY] = "NID", + [PLACEMENT_INVAL_POLICY] = "INVAL" +}; + +static placement_policy_t placement_name2policy(char *name, int len) +{ + int i; + + for (i = 0; i < PLACEMENT_MAX_POLICY; i++) { + if (!strncmp(placement_name[i], name, len)) + return i; + } + return PLACEMENT_INVAL_POLICY; +} + +static const char *placement_policy2name(placement_policy_t placement) +{ + LASSERT(placement < PLACEMENT_MAX_POLICY); + return placement_name[placement]; +} + +static int lmv_rd_placement(char *page, char **start, off_t off, int count, + int *eof, void *data) +{ + struct obd_device *dev = (struct obd_device*)data; + struct lmv_obd *lmv; + + LASSERT(dev != NULL); + lmv = &dev->u.lmv; + *eof = 1; + return snprintf(page, count, "%s\n", + placement_policy2name(lmv->lmv_placement)); + +} + +#define MAX_POLICY_STRING_SIZE 64 + +static int lmv_wr_placement(struct file *file, const char *buffer, + unsigned long count, void *data) +{ + struct obd_device *dev = (struct obd_device *)data; + char dummy[MAX_POLICY_STRING_SIZE + 1]; + int len = count; + placement_policy_t policy; + struct lmv_obd *lmv; + + if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE)) + return -EFAULT; + + LASSERT(dev != NULL); + lmv = &dev->u.lmv; + + if (len > MAX_POLICY_STRING_SIZE) + len = MAX_POLICY_STRING_SIZE; + + if (dummy[len - 1] == '\n') + len--; + dummy[len] = '\0'; + + policy = placement_name2policy(dummy, len); + if (policy != PLACEMENT_INVAL_POLICY) { + spin_lock(&lmv->lmv_lock); + lmv->lmv_placement = policy; + spin_unlock(&lmv->lmv_lock); + } else { + CERROR("Invalid placement policy \"%s\"!\n", dummy); + return -EINVAL; + } + return count; +} + static int lmv_rd_activeobd(char *page, char **start, off_t off, int count, int *eof, void *data) { - struct obd_device* dev = (struct obd_device*)data; - struct lmv_desc *desc; + struct obd_device *dev = (struct obd_device*)data; + struct lmv_desc *desc; LASSERT(dev != NULL); desc = &dev->u.lmv.desc; @@ -74,8 +147,8 @@ static int lmv_rd_activeobd(char *page, char **start, off_t off, int count, static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count, int *eof, void *data) { - struct obd_device *dev = (struct obd_device*) data; - struct lmv_obd *lmv; + struct obd_device *dev = (struct obd_device*) data; + struct lmv_obd *lmv; LASSERT(dev != NULL); lmv = &dev->u.lmv; @@ -85,11 +158,9 @@ static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count, static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos) { - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; - - return (*pos >= lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]); - + struct obd_device *dev = p->private; + struct lmv_obd *lmv = &dev->u.lmv; + return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos]; } static void lmv_tgt_seq_stop(struct seq_file *p, void *v) @@ -99,37 +170,36 @@ static void lmv_tgt_seq_stop(struct seq_file *p, void *v) static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos) { - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; - - ++*pos; - return (*pos >=lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]); + struct obd_device *dev = p->private; + struct lmv_obd *lmv = &dev->u.lmv; + ++*pos; + return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos]; } static int lmv_tgt_seq_show(struct seq_file *p, void *v) { - struct lmv_tgt_desc *tgt = v; - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; - int idx = tgt - &(lmv->tgts[0]); - - return seq_printf(p, "%d: %s %sACTIVE\n", idx, tgt->ltd_uuid.uuid, - tgt->ltd_active ? "" : "IN"); + struct lmv_tgt_desc *tgt = v; + + if (tgt == NULL) + return 0; + return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_idx, + tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN"); } struct seq_operations lmv_tgt_sops = { - .start = lmv_tgt_seq_start, - .stop = lmv_tgt_seq_stop, - .next = lmv_tgt_seq_next, - .show = lmv_tgt_seq_show, + .start = lmv_tgt_seq_start, + .stop = lmv_tgt_seq_stop, + .next = lmv_tgt_seq_next, + .show = lmv_tgt_seq_show, }; static int lmv_target_seq_open(struct inode *inode, struct file *file) { - struct proc_dir_entry *dp = PDE(inode); - struct seq_file *seq; - int rc = seq_open(file, &lmv_tgt_sops); + struct proc_dir_entry *dp = PDE(inode); + struct seq_file *seq; + int rc; + rc = seq_open(file, &lmv_tgt_sops); if (rc) return rc; @@ -140,29 +210,30 @@ static int lmv_target_seq_open(struct inode *inode, struct file *file) } struct lprocfs_vars lprocfs_lmv_obd_vars[] = { - { "numobd", lmv_rd_numobd, 0, 0 }, - { "activeobd", lmv_rd_activeobd, 0, 0 }, - { "uuid", lprocfs_rd_uuid, 0, 0 }, - { "desc_uuid", lmv_rd_desc_uuid, 0, 0 }, + { "numobd", lmv_rd_numobd, 0, 0 }, + { "placement", lmv_rd_placement, lmv_wr_placement, 0 }, + { "activeobd", lmv_rd_activeobd, 0, 0 }, + { "uuid", lprocfs_rd_uuid, 0, 0 }, + { "desc_uuid", lmv_rd_desc_uuid, 0, 0 }, { 0 } }; static struct lprocfs_vars lprocfs_lmv_module_vars[] = { - { "num_refs", lprocfs_rd_numrefs, 0, 0 }, + { "num_refs", lprocfs_rd_numrefs, 0, 0 }, { 0 } }; struct file_operations lmv_proc_target_fops = { - .owner = THIS_MODULE, - .open = lmv_target_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, + .owner = THIS_MODULE, + .open = lmv_target_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, }; #endif /* LPROCFS */ void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars) { - lvars->module_vars = lprocfs_lmv_module_vars; - lvars->obd_vars = lprocfs_lmv_obd_vars; + lvars->module_vars = lprocfs_lmv_module_vars; + lvars->obd_vars = lprocfs_lmv_obd_vars; }