/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * This program is distributed in the hope that it will 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
+ * You should have received a copy of the GNU General Public License
+ * 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
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include <linux/version.h>
#include <asm/statfs.h>
+#include <obd_cksum.h>
#include <obd_class.h>
#include <lprocfs_status.h>
#include <linux/seq_file.h>
obd->u.cli.cl_oscc.oscc_grow_count);
}
+/**
+ * Set OSC creator's osc_creator::oscc_grow_count
+ *
+ * \param file proc file
+ * \param buffer buffer containing the value
+ * \param count buffer size
+ * \param data obd device
+ *
+ * \retval \a count
+ */
static int osc_wr_create_count(struct file *file, const char *buffer,
unsigned long count, void *data)
{
struct obd_device *obd = data;
+ int val, rc, i;
+
+ if (obd == NULL)
+ return 0;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc)
+ return rc;
+
+ /* The MDT ALWAYS needs to limit the precreate count to
+ * OST_MAX_PRECREATE, and the constant cannot be changed
+ * because it is a value shared between the OSC and OST
+ * that is the maximum possible number of objects that will
+ * ever be handled by MDT->OST recovery processing.
+ *
+ * If the OST ever gets a request to delete more orphans,
+ * this implies that something has gone badly on the MDT
+ * and the OST will refuse to delete so much data from the
+ * filesystem as a safety measure. */
+ if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
+ return -ERANGE;
+ if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
+ return -ERANGE;
+
+ for (i = 1; (i << 1) <= val; i <<= 1)
+ ;
+ obd->u.cli.cl_oscc.oscc_grow_count = i;
+
+ return count;
+}
+
+/**
+ * Read OSC creator's osc_creator::oscc_max_grow_count
+ *
+ * \param page buffer to hold the returning string
+ * \param start
+ * \param off
+ * \param count
+ * \param eof
+ * proc read function parameters, please refer to kernel
+ * code fs/proc/generic.c proc_file_read()
+ * \param data obd device
+ *
+ * \retval number of characters printed.
+ */
+static int osc_rd_max_create_count(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct obd_device *obd = data;
+
+ if (obd == NULL)
+ return 0;
+
+ return snprintf(page, count, "%d\n",
+ obd->u.cli.cl_oscc.oscc_max_grow_count);
+}
+
+/**
+ * Set OSC creator's osc_creator::oscc_max_grow_count
+ *
+ * \param file proc file
+ * \param buffer buffer containing the value
+ * \param count buffer size
+ * \param data obd device
+ *
+ * \retval \a count
+ */
+static int osc_wr_max_create_count(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = data;
int val, rc;
if (obd == NULL)
if (val > OST_MAX_PRECREATE)
return -ERANGE;
- obd->u.cli.cl_oscc.oscc_grow_count = val;
+ if (obd->u.cli.cl_oscc.oscc_grow_count > val)
+ obd->u.cli.cl_oscc.oscc_grow_count = val;
+
+ obd->u.cli.cl_oscc.oscc_max_grow_count = val;
return count;
}
{ "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
{ "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
{ "create_count", osc_rd_create_count, osc_wr_create_count, 0 },
+ { "max_create_count", osc_rd_max_create_count,
+ osc_wr_max_create_count, 0},
{ "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
{ "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
{ "checksums", osc_rd_checksum, osc_wr_checksum, 0 },
{ "checksum_type", osc_rd_checksum_type, osc_wd_checksum_type, 0 },
{ "resend_count", osc_rd_resend_count, osc_wr_resend_count, 0},
+ { "timeouts", lprocfs_rd_timeouts, 0, 0 },
{ 0 }
};
lvars->obd_vars = lprocfs_osc_obd_vars;
}
#endif /* LPROCFS */
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff