/*
*
- * Higher Level Device routines.
- * Knows about Bacula tape labels and such
+ * Higher Level Device routines.
+ * Knows about Bacula tape labels and such
*
* NOTE! In general, subroutines that have the word
* "device" in the name do locking. Subroutines
* that have the word "dev" in the name do not
- * do locking. Thus if xxx_device() calls
- * yyy_dev(), all is OK, but if xxx_device()
- * calls yyy_device(), everything will hang.
- * Obviously, no zzz_dev() is allowed to call
- * a www_device() or everything falls apart.
+ * do locking. Thus if xxx_device() calls
+ * yyy_dev(), all is OK, but if xxx_device()
+ * calls yyy_device(), everything will hang.
+ * Obviously, no zzz_dev() is allowed to call
+ * a www_device() or everything falls apart.
*
* Concerning the routines lock_device() and block_device()
* see the end of this module for details. In general,
* blocking a device leaves it in a state where all threads
- * other than the current thread block when they attempt to
+ * other than the current thread block when they attempt to
* lock the device. They remain suspended (blocked) until the device
* is unblocked. So, a device is blocked during an operation
* that takes a long time (initialization, mounting a new
* volume, ...) locking a device is done for an operation
- * that takes a short time such as writing data to the
+ * that takes a short time such as writing data to the
* device.
*
*
* Kern Sibbald, MM, MMI
- *
+ *
* Version $Id$
*/
/*
- Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
+ Copyright (C) 2000-2005 Kern Sibbald
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; either version 2 of
- the License, or (at your option) any later version.
+ modify it under the terms of the GNU General Public License
+ version 2 as amended with additional clauses defined in the
+ file LICENSE in the main source directory.
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 for more details.
-
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ the file LICENSE for additional details.
*/
#include "stored.h" /* pull in Storage Deamon headers */
/* Forward referenced functions */
-static int ready_dev_for_append(JCR *jcr, DEVICE *dev, DEV_BLOCK *block);
-static int mount_next_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *label_blk);
extern char my_name[];
extern int debug_level;
-
-/*********************************************************************
- * Acquire device for reading. We permit (for the moment)
- * only one reader. We read the Volume label from the block and
- * leave the block pointers just after the label.
+/*
+ * This is the dreaded moment. We either have an end of
+ * medium condition or worse, and error condition.
+ * Attempt to "recover" by obtaining a new Volume.
+ *
+ * Here are a few things to know:
+ * dcr->VolCatInfo contains the info on the "current" tape for this job.
+ * dev->VolCatInfo contains the info on the tape in the drive.
+ * The tape in the drive could have changed several times since
+ * the last time the job used it (jcr->VolCatInfo).
+ * dcr->VolumeName is the name of the current/desired tape in the drive.
+ *
+ * We enter with device locked, and
+ * exit with device locked.
+ *
+ * Note, we are called only from one place in block.c
*
- * Returns: 0 if failed for any reason
- * 1 if successful
+ * Returns: true on success
+ * false on failure
*/
-int acquire_device_for_read(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+bool fixup_device_block_write_error(DCR *dcr)
{
- int stat;
+ char PrevVolName[MAX_NAME_LENGTH];
+ DEV_BLOCK *label_blk;
+ DEV_BLOCK *block = dcr->block;
+ char b1[30], b2[30];
+ time_t wait_time;
+ char dt[MAX_TIME_LENGTH];
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+
+ wait_time = time(NULL);
+
+ Dmsg0(100, "Enter fixup_device_block_write_error\n");
- lock_device(dev);
- if (dev->state & ST_READ || dev->num_writers > 0) {
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy.\n"), dev_name(dev));
- unlock_device(dev);
- return 0;
- }
- dev->state &= ~ST_LABEL; /* force reread of label */
block_device(dev, BST_DOING_ACQUIRE);
+ /* Unlock, but leave BLOCKED */
unlock_device(dev);
- stat = ready_dev_for_read(jcr, dev, block);
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return stat;
-}
-/*
- * Acquire device for writing. We permit multiple writers.
- * If this is the first one, we read the label.
- *
- * Returns: 0 if failed for any reason
- * 1 if successful
- */
-int acquire_device_for_append(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
-{
+ bstrncpy(PrevVolName, dev->VolCatInfo.VolCatName, sizeof(PrevVolName));
+ bstrncpy(dev->VolHdr.PrevVolumeName, PrevVolName, sizeof(dev->VolHdr.PrevVolumeName));
- lock_device(dev);
- Dmsg1(90, "acquire_append device is %s\n", dev_is_tape(dev)?"tape":"disk");
- if (!(dev->state & ST_APPEND)) {
- if (dev->state & ST_READ) {
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy reading.\n"), dev_name(dev));
- unlock_device(dev);
- return 0;
- }
- ASSERT(dev->num_writers == 0);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- if (!ready_dev_for_append(jcr, dev, block)) {
- Jmsg(jcr, M_FATAL, 0, _("Could not ready device %s for append.\n"),
- dev_name(dev));
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return 0;
- }
+ label_blk = new_block(dev);
+ dcr->block = label_blk;
+
+ /* Inform User about end of medium */
+ Jmsg(jcr, M_INFO, 0, _("End of medium on Volume \"%s\" Bytes=%s Blocks=%s at %s.\n"),
+ PrevVolName, edit_uint64_with_commas(dev->VolCatInfo.VolCatBytes, b1),
+ edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
+ bstrftime(dt, sizeof(dt), time(NULL)));
+
+ if (!mount_next_write_volume(dcr, 1)) {
+ free_block(label_blk);
+ dcr->block = block;
P(dev->mutex);
- dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on this media */
- dev->num_writers = 1;
- if (jcr->NumVolumes == 0) {
- jcr->NumVolumes = 1;
- }
unblock_device(dev);
- V(dev->mutex);
- return 1;
- } else {
- /*
- * Device already in append mode
- *
- * Check if we have the right Volume mounted
- * OK if AnonVols and volume info OK
- * OK if next volume matches current volume
- * otherwise mount desired volume obtained from
- * dir_find_next_appendable_volume
- */
- strcpy(jcr->VolumeName, dev->VolHdr.VolName);
- if (((dev->capabilities & CAP_ANONVOLS) &&
- !dir_get_volume_info(jcr)) ||
- (!dir_find_next_appendable_volume(jcr) ||
- strcmp(dev->VolHdr.VolName, jcr->VolumeName) != 0)) { /* wrong tape mounted */
- if (dev->num_writers != 0) {
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy writing with another Volume.\n"), dev_name(dev));
- unlock_device(dev);
- return 0;
- }
- /* Wrong tape currently mounted */
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- if (!mount_next_volume(jcr, dev, block)) {
- Jmsg(jcr, M_FATAL, 0, _("Unable to mount desired volume.\n"));
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return 0;
- }
- P(dev->mutex);
- unblock_device(dev);
- }
+ return false; /* device locked */
}
- dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on this media */
- dev->num_writers++;
- if (dev->num_writers > 1) {
- Dmsg2(0, "Hey!!!! There are %d writers on device %s\n", dev->num_writers,
- dev_name(dev));
+ P(dev->mutex); /* lock again */
+
+ Jmsg(jcr, M_INFO, 0, _("New volume \"%s\" mounted on device %s at %s.\n"),
+ dcr->VolumeName, dev->print_name(), bstrftime(dt, sizeof(dt), time(NULL)));
+
+ /*
+ * If this is a new tape, the label_blk will contain the
+ * label, so write it now. If this is a previously
+ * used tape, mount_next_write_volume() will return an
+ * empty label_blk, and nothing will be written.
+ */
+ Dmsg0(190, "write label block to dev\n");
+ if (!write_block_to_dev(dcr)) {
+ berrno be;
+ Pmsg1(0, _("write_block_to_device Volume label failed. ERR=%s"),
+ be.strerror(dev->dev_errno));
+ free_block(label_blk);
+ dcr->block = block;
+ unblock_device(dev);
+ return false; /* device locked */
}
- if (jcr->NumVolumes == 0) {
- jcr->NumVolumes = 1;
+ free_block(label_blk);
+ dcr->block = block;
+
+ /*
+ * Walk through all attached jcrs indicating the volume has changed
+ */
+ Dmsg1(100, "Walk attached dcrs. Volume=%s\n", dev->VolCatInfo.VolCatName);
+ DCR *mdcr;
+ foreach_dlist(mdcr, dev->attached_dcrs) {
+ JCR *mjcr = mdcr->jcr;
+ if (mjcr->JobId == 0) {
+ continue; /* ignore console */
+ }
+ mdcr->NewVol = true;
+ if (jcr != mjcr) {
+ bstrncpy(mdcr->VolumeName, dcr->VolumeName, sizeof(mdcr->VolumeName));
+ }
}
- unlock_device(dev);
- return 1; /* got it */
+
+ /* Clear NewVol now because dir_get_volume_info() already done */
+ jcr->dcr->NewVol = false;
+ set_new_volume_parameters(dcr);
+
+ jcr->run_time += time(NULL) - wait_time; /* correct run time for mount wait */
+
+ /* Write overflow block to device */
+ Dmsg0(190, "Write overflow block to dev\n");
+ if (!write_block_to_dev(dcr)) {
+ berrno be;
+ Pmsg1(0, _("write_block_to_device overflow block failed. ERR=%s"),
+ be.strerror(dev->dev_errno));
+ unblock_device(dev);
+ return false; /* device locked */
+ }
+
+ unblock_device(dev);
+ return true; /* device locked */
}
/*
- * This job is done, so release the device. From a Unix standpoint,
- * the device remains open.
- *
+ * We have a new Volume mounted, so reset the Volume parameters
+ * concerning this job. The global changes were made earlier
+ * in the dev structure.
*/
-int release_device(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+void set_new_volume_parameters(DCR *dcr)
{
- P(dev->mutex);
- Dmsg1(90, "release_device device is %s\n", dev_is_tape(dev)?"tape":"disk");
- if (dev->state & ST_READ) {
- dev->state &= ~ST_READ; /* clear read bit */
- if (!dev_is_tape(dev)) {
- close_dev(dev);
- }
- /******FIXME**** send read volume info to director */
-
- } else if (dev->num_writers > 0) {
- dev->num_writers--;
- Dmsg1(90, "There are %d writers in release_device\n", dev->num_writers);
- if (dev->num_writers == 0) {
- weof_dev(dev, 1);
- dev->VolCatInfo.VolCatFiles++; /* increment number of files */
- /* Note! do volume update before close, which zaps VolCatInfo */
- dir_update_volume_info(jcr, &dev->VolCatInfo); /* send Volume info to Director */
- if (!dev_is_tape(dev)) {
- close_dev(dev);
- } else {
- Dmsg0(90, "Device is tape leave open in release_device\n");
- }
- } else {
- dir_update_volume_info(jcr, &dev->VolCatInfo); /* send Volume info to Director */
- }
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+ if (dcr->NewVol && !dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
+ Jmsg1(jcr, M_ERROR, 0, "%s", jcr->errmsg);
+ }
+ /* Set new start/end positions */
+ if (dev->is_tape()) {
+ dcr->StartBlock = dev->block_num;
+ dcr->StartFile = dev->file;
} else {
- Emsg1(M_ERROR, 0, _("BAD ERROR: release_device %s not in use.\n"), dev_name(dev));
+ dcr->StartBlock = (uint32_t)dev->file_addr;
+ dcr->StartFile = (uint32_t)(dev->file_addr >> 32);
}
- V(dev->mutex);
- return 1;
+ /* Reset indicies */
+ dcr->VolFirstIndex = 0;
+ dcr->VolLastIndex = 0;
+ jcr->NumVolumes++;
+ dcr->NewVol = false;
+ dcr->WroteVol = false;
}
-
-
/*
- * We rewind the current volume, which we no longer want, and
- * ask the user (console) to mount the next volume.
- *
- * Continue trying until we get it, and we call
- * ready_dev_for_append() so that we can write on it.
- *
- * This routine retuns a 0 only if it is REALLY
- * impossible to get the requested Volume.
+ * We are now in a new Volume file, so reset the Volume parameters
+ * concerning this job. The global changes were made earlier
+ * in the dev structure.
*/
-static int mount_next_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *label_blk)
+void set_new_file_parameters(DCR *dcr)
{
- Dmsg0(90, "Enter mount_next_volume()\n");
-
- /*
- * First erase all memory of the current volume
- */
- dev->block_num = 0;
- dev->file = 0;
- dev->LastBlockNumWritten = 0;
- memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
- memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
-
- /* Keep trying until we get something good mounted */
- for ( ;; ) {
- if (job_cancelled(jcr)) {
- Mmsg0(&dev->errmsg, "Job cancelled.\n");
- return 0;
- }
-
- if (dev->state & ST_OPENED && !rewind_dev(dev)) {
- Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- }
+ DEVICE *dev = dcr->dev;
- /*
- * Ask to mount and wait if necessary
- */
- if (!dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
- Jmsg(jcr, M_FATAL, 0, _("Unable to mount next Volume on device %s\n"),
- dev_name(dev));
- return 0;
- }
-
- /*
- * Ready output device for writing
- */
- Dmsg1(120, "just before ready_dev_for_append dev=%x\n", dev);
- if (!ready_dev_for_append(jcr, dev, label_blk)) {
- continue;
- }
- dev->VolCatInfo.VolCatMounts++;
- jcr->VolFirstFile = 0;
- break; /* Got new volume, continue */
+ /* Set new start/end positions */
+ if (dev->is_tape()) {
+ dcr->StartBlock = dev->block_num;
+ dcr->StartFile = dev->file;
+ } else {
+ dcr->StartBlock = (uint32_t)dev->file_addr;
+ dcr->StartFile = (uint32_t)(dev->file_addr >> 32);
}
- return 1;
+ /* Reset indicies */
+ dcr->VolFirstIndex = 0;
+ dcr->VolLastIndex = 0;
+ dcr->NewFile = false;
+ dcr->WroteVol = false;
}
+
/*
- * This routine ensures that the device is ready for
- * writing. We start from the assumption that there
- * may not be a tape mounted.
+ * First Open of the device. Expect dev to already be initialized.
*
- * If the device is a file, we create the output
- * file. If it is a tape, we check the volume name
- * and move the tape to the end of data.
+ * This routine is used only when the Storage daemon starts
+ * and always_open is set, and in the stand-alone utility
+ * routines such as bextract.
*
- * It assumes that the device is not already in use!
+ * Note, opening of a normal file is deferred to later so
+ * that we can get the filename; the device_name for
+ * a file is the directory only.
*
- * Returns 0 on failure
- * Returns 1 on success
+ * Returns: false on failure
+ * true on success
*/
-static int ready_dev_for_append(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+bool first_open_device(DCR *dcr)
{
- int mounted = 0;
- int recycle = 0;
-
- Dmsg0(100, "Enter ready_dev_for_append\n");
-
- dev->state &= ~(ST_LABEL|ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
-
+ DEVICE *dev = dcr->dev;
+ bool ok = true;
- for ( ;; ) {
- if (job_cancelled(jcr)) {
- Mmsg(&dev->errmsg, "Job %s cancelled.\n", jcr->Job);
- return 0;
- }
+ Dmsg0(120, "start open_output_device()\n");
+ if (!dev) {
+ return false;
+ }
- /*
- * Ask Director for Volume Info (Name, attributes) to use.
- */
- if (!dir_find_next_appendable_volume(jcr)) {
- if (!dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
- Jmsg1(jcr, M_ERROR, 0, _("Unable to mount desired Volume for device %s.\n"),
- dev_name(dev));
- return 0; /* error return */
- }
- }
- Dmsg1(200, "want vol=%s\n", jcr->VolumeName);
-
- /* Open device */
- for ( ; !(dev->state & ST_OPENED); ) {
- if (open_dev(dev, jcr->VolCatInfo.VolCatName, READ_WRITE) < 0) {
- if (dev->dev_errno == EAGAIN || dev->dev_errno == EBUSY) {
- sleep(30);
- }
- Jmsg2(jcr, M_ERROR, 0, _("Unable to open device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- return 0;
- }
- }
+ lock_device(dev);
- /*
- * Now make sure we have the right tape mounted
- */
- switch (read_dev_volume_label(jcr, dev, block)) {
- case VOL_OK:
- Dmsg1(200, "Vol OK name=%s\n", jcr->VolumeName);
- memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
- if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
- recycle = 1;
- }
- break; /* got it */
- case VOL_NAME_ERROR:
- /* Check if we can accept this as an anonymous volume */
- strcpy(jcr->VolumeName, dev->VolHdr.VolName);
- if (!dev->capabilities & CAP_ANONVOLS ||
- !dir_get_volume_info(jcr)) {
- goto mount_next_vol;
- }
- Dmsg1(200, "want new name=%s\n", jcr->VolumeName);
- memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
- break;
-
- case VOL_NO_LABEL:
- case VOL_IO_ERROR:
- /* If permitted, create a label */
- if (dev->capabilities & CAP_LABEL) {
- Dmsg0(90, "Create volume label\n");
- if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
- jcr->pool_name)) {
- return 0;
- }
- Jmsg(jcr, M_INFO, 0, _("Created Volume label %s on device %s.\n"),
- jcr->VolumeName, dev_name(dev));
- mounted = 1;
- continue; /* read label we just wrote */
- }
- /* NOTE! Fall-through wanted. */
- default:
-mount_next_vol:
- /* Send error message generated by read_dev_volume_label() */
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
- rewind_dev(dev);
- if (!dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
- Jmsg1(jcr, M_ERROR, 0, _("Unable to mount desired Volume for device %s.\n"),
- dev_name(dev));
- return 0; /* error return */
- }
- mounted = 1;
- continue; /* try reading again */
- }
- break;
- }
- if (mounted) {
- dev->VolCatInfo.VolCatMounts++;
+ /* Defer opening files */
+ if (!dev->is_tape()) {
+ Dmsg0(129, "Device is file, deferring open.\n");
+ goto bail_out;
}
- /*
- * See if we have a fresh tape or tape with data.
- *
- * Note, if the LabelType is PRE_LABEL, it was labeled
- * but never written. If so, rewrite the label but set as
- * VOL_LABEL. We rewind and return the label (reconstructed)
- * in the block so that in the case of a new tape, data can
- * be appended just after the block label. If we are writing
- * an second volume, the calling routine will write the label
- * before writing the overflow block.
- *
- * If the tape is marked as Recycle, we rewrite the label.
- */
- if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
- Dmsg1(90, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
- dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
- write_volume_label_to_block(jcr, dev, block);
- /*
- * Write the block now to ensure we have write permission.
- * It is better to find out now rather than later.
- */
- dev->VolCatInfo.VolCatBytes = 0;
- if (!rewind_dev(dev)) {
- Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- }
- if (!write_block_to_dev(dev, block)) {
- Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- return 0;
- }
- if (!rewind_dev(dev)) {
- Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- return 0;
- }
- /* Recreate a correct volume label and return it in the block */
- write_volume_label_to_block(jcr, dev, block);
- dev->VolCatInfo.VolCatJobs = 1;
- dev->VolCatInfo.VolCatFiles = 1;
- dev->VolCatInfo.VolCatErrors = 0;
- dev->VolCatInfo.VolCatBlocks = 1;
- if (recycle) {
- dev->VolCatInfo.VolCatMounts++;
- dev->VolCatInfo.VolCatRecycles++;
- } else {
- dev->VolCatInfo.VolCatMounts = 1;
- dev->VolCatInfo.VolCatRecycles = 0;
- dev->VolCatInfo.VolCatWrites = 1;
- dev->VolCatInfo.VolCatReads = 1;
- }
- strcpy(dev->VolCatInfo.VolCatStatus, "Append");
- dir_update_volume_info(jcr, &dev->VolCatInfo);
- if (recycle) {
- Jmsg(jcr, M_INFO, 0, _("Recycled volume %s on device %s, all previous data lost.\n"),
- jcr->VolumeName, dev_name(dev));
- } else {
- Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume %s on device %s\n"),
- jcr->VolumeName, dev_name(dev));
- }
-
- } else {
- /* OK, at this point, we have a valid Bacula label, but
- * we need to position to the end of the volume.
- */
- Dmsg0(20, "Device previously written, moving to end of data\n");
- Jmsg(jcr, M_INFO, 0, _("Volume %s previously written, moving to end of data.\n"),
- jcr->VolumeName);
- if (!eod_dev(dev)) {
- Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- Jmsg(jcr, M_INFO, 0, _("Marking Volume %s in Error in Catalog.\n"),
- jcr->VolumeName);
- strcpy(dev->VolCatInfo.VolCatStatus, "Error");
- dir_update_volume_info(jcr, &dev->VolCatInfo);
- return 0;
- }
- /* *****FIXME**** we might do some checking for files too */
- if (dev_is_tape(dev)) {
- Jmsg(jcr, M_INFO, 0, _("Ready to append at EOM File=%d.\n"), dev_file(dev));
- if (dev->VolCatInfo.VolCatFiles != dev_file(dev) + 1) {
- /* ****FIXME**** this should refuse to write on tape */
- Jmsg(jcr, M_INFO, 0, _("Hey! Num files mismatch! Catalog Files=%d\n"), dev->VolCatInfo.VolCatFiles);
- }
- }
- /* Return an empty block */
- empty_block(block); /* we used it for reading so set for write */
+ int mode;
+ if (dev_cap(dev, CAP_STREAM)) {
+ mode = OPEN_WRITE_ONLY;
+ } else {
+ mode = OPEN_READ_ONLY;
+ }
+ Dmsg0(129, "Opening device.\n");
+ if (dev->open(dcr, mode) < 0) {
+ Emsg1(M_FATAL, 0, _("dev open failed: %s\n"), dev->errmsg);
+ ok = false;
+ goto bail_out;
}
- dev->state |= ST_APPEND;
- Dmsg0(100, "Normal return from read_dev_for_append\n");
- return 1;
+ Dmsg1(129, "open dev %s OK\n", dev->print_name());
+
+bail_out:
+ unlock_device(dev);
+ return ok;
}
/*
- * This routine ensures that the device is ready for
- * reading. If it is a file, it opens it.
- * If it is a tape, it checks the volume name
- *
- * Returns 0 on failure
- * Returns 1 on success
+ * Make sure device is open, if not do so
*/
-int ready_dev_for_read(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+bool open_device(DCR *dcr)
{
- if (!(dev->state & ST_OPENED)) {
- Dmsg1(20, "bstored: open vol=%s\n", jcr->VolumeName);
- if (open_dev(dev, jcr->VolumeName, READ_ONLY) < 0) {
- Jmsg(jcr, M_FATAL, 0, _("Open device %s volume %s failed, ERR=%s\n"),
- dev_name(dev), jcr->VolumeName, strerror_dev(dev));
- return 0;
- }
- Dmsg1(29, "open_dev %s OK\n", dev_name(dev));
+ DEVICE *dev = dcr->dev;
+ /* Open device */
+ int mode;
+ if (dev_cap(dev, CAP_STREAM)) {
+ mode = OPEN_WRITE_ONLY;
+ } else {
+ mode = OPEN_READ_WRITE;
}
-
- for (;;) {
- if (job_cancelled(jcr)) {
- Mmsg0(&dev->errmsg, _("Job cancelled.\n"));
- return 0;
- }
- if (!rewind_dev(dev)) {
- Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- }
- switch (read_dev_volume_label(jcr, dev, block)) {
- case VOL_OK:
- break; /* got it */
- default:
- /* Send error message generated by read_dev_volume_label() */
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
- if (!rewind_dev(dev)) {
- Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
- dev_name(dev), strerror_dev(dev));
- }
- if (!dir_ask_sysop_to_mount_volume(jcr, dev)) {
- return 0; /* error return */
- }
- continue; /* try reading again */
+ if (dev->open(dcr, mode) < 0) {
+ /* If polling, ignore the error */
+ /* If DVD, also ignore the error, very often you cannot open the device
+ * (when there is no DVD, or when the one inserted is a wrong one) */
+ if ((!dev->poll) && (!dev->is_dvd())) {
+ Jmsg2(dcr->jcr, M_FATAL, 0, _("Unable to open device %s: ERR=%s\n"),
+ dev->print_name(), strerror_dev(dev));
+ Pmsg2(000, _("Unable to open archive %s: ERR=%s\n"),
+ dev->print_name(), strerror_dev(dev));
}
- break;
+ return false;
}
-
- dev->state |= ST_READ;
- return 1;
+ return true;
}
/*
- * This is the dreaded moment. We either have an end of
- * medium condition or worse, and error condition.
- * Attempt to "recover" by obtaining a new Volume.
- *
- * We enter with device locked, and
- * exit with device locked.
- *
- * Note, we are called only from one place in block.c
- *
- * Returns: 1 on success
- * 0 on failure
+ * Release any Volume attached to this device
+ * then close the device.
*/
-int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+void close_device(DEVICE *dev)
{
- uint32_t stat = 0;
- char PrevVolName[MAX_NAME_LENGTH];
- DEV_BLOCK *label_blk;
- char b1[30], b2[30];
- time_t wait_time;
-
- wait_time = time(NULL);
- status_dev(dev, &stat);
- if (stat & MT_EOD) {
- Dmsg0(90, "======= Got EOD ========\n");
-
- block_device(dev, BST_DOING_ACQUIRE);
-
- strcpy(dev->VolCatInfo.VolCatStatus, "Full");
- Dmsg0(90, "Call update_vol_info\n");
- if (!dir_update_volume_info(jcr, &dev->VolCatInfo)) { /* send Volume info to Director */
- Jmsg(jcr, M_ERROR, 0, _("Could not update Volume info Volume=%s Job=%s\n"),
- dev->VolCatInfo.VolCatName, jcr->Job);
- return 0; /* device locked */
- }
- Dmsg0(90, "Back from update_vol_info\n");
-
- strcpy(PrevVolName, dev->VolCatInfo.VolCatName);
- strcpy(dev->VolHdr.PrevVolName, PrevVolName);
-
- label_blk = new_block(dev);
-
- /* Inform User about end of media */
- Jmsg(jcr, M_INFO, 0, _("End of media on Volume %s Bytes=%s Blocks=%s.\n"),
- PrevVolName, edit_uint64_with_commas(dev->VolCatInfo.VolCatBytes, b1),
- edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2));
-
- if (!dev_is_tape(dev)) { /* If file, */
- close_dev(dev); /* yes, close it */
- }
-
- /* Unlock, but leave BLOCKED */
- unlock_device(dev);
- if (!mount_next_volume(jcr, dev, label_blk)) {
- P(dev->mutex);
- unblock_device(dev);
- return 0; /* device locked */
- }
-
- P(dev->mutex); /* lock again */
-
- Jmsg(jcr, M_INFO, 0, _("New volume %s mounted on device %s\n"),
- jcr->VolumeName, dev_name(dev));
-
- /*
- * If this is a new tape, the label_blk will contain the
- * label, so write it now. If this is a previously
- * used tape, mount_next_volume() will return an
- * empty label_blk, and nothing will be written.
- */
- Dmsg0(90, "write label block to dev\n");
- if (!write_block_to_dev(dev, label_blk)) {
- Dmsg1(0, "write_block_to_device Volume label failed. ERR=%s",
- strerror_dev(dev));
- free_block(label_blk);
- unblock_device(dev);
- return 0; /* device locked */
- }
-
- /* Write overflow block to tape */
- Dmsg0(90, "Write overflow block to dev\n");
- if (!write_block_to_dev(dev, block)) {
- Dmsg1(0, "write_block_to_device overflow block failed. ERR=%s",
- strerror_dev(dev));
- free_block(label_blk);
- unblock_device(dev);
- return 0; /* device locked */
- }
-
- jcr->NumVolumes++;
- Dmsg0(90, "Wake up any waiting threads.\n");
- free_block(label_blk);
- unblock_device(dev);
- jcr->run_time += time(NULL) - wait_time; /* correct run time */
- return 1; /* device locked */
- }
- free_block(label_blk);
- return 0; /* device locked */
+ free_volume(dev);
+ dev->close();
}
-
/*
- * Open the device. Expect dev to already be initialized.
- *
- * This routine is used only when the Storage daemon starts
- * and always_open is set, and in the stand-alone utility
- * routines such as bextract.
- *
- * Note, opening of a normal file is deferred to later so
- * that we can get the filename; the device_name for
- * a file is the directory only.
- *
- * Retuns: 0 on failure
- * 1 on success
*/
-int open_device(DEVICE *dev)
+void force_close_device(DEVICE *dev)
{
- Dmsg0(20, "start open_output_device()\n");
- if (!dev) {
- return 0;
+ if (!dev || dev->fd < 0) {
+ return;
}
+ Dmsg1(29, "Force close_dev %s\n", dev->print_name());
+ free_volume(dev);
+ dev->close();
+}
- lock_device(dev);
- /* Defer opening files */
- if (!dev_is_tape(dev)) {
- Dmsg0(29, "Device is file, deferring open.\n");
- unlock_device(dev);
- return 1;
+void dev_lock(DEVICE *dev)
+{
+ int errstat;
+ if ((errstat=rwl_writelock(&dev->lock))) {
+ Emsg1(M_ABORT, 0, _("Device write lock failure. ERR=%s\n"), strerror(errstat));
}
+}
- if (!(dev->state & ST_OPENED)) {
- Dmsg0(29, "Opening device.\n");
- if (open_dev(dev, NULL, READ_WRITE) < 0) {
- Emsg1(M_FATAL, 0, _("dev open failed: %s\n"), dev->errmsg);
- unlock_device(dev);
- return 0;
- }
+void dev_unlock(DEVICE *dev)
+{
+ int errstat;
+ if ((errstat=rwl_writeunlock(&dev->lock))) {
+ Emsg1(M_ABORT, 0, _("Device write unlock failure. ERR=%s\n"), strerror(errstat));
}
- Dmsg1(29, "open_dev %s OK\n", dev_name(dev));
-
- unlock_device(dev);
- return 1;
}
-
-/*
+/*
* When dev_blocked is set, all threads EXCEPT thread with id no_wait_id
* must wait. The no_wait_id thread is out obtaining a new volume
* and preparing the label.
*/
-void lock_device(DEVICE *dev)
+void _lock_device(const char *file, int line, DEVICE *dev)
{
int stat;
-
- Dmsg1(90, "lock %d\n", dev->dev_blocked);
+ Dmsg3(500, "lock %d from %s:%d\n", dev->dev_blocked, file, line);
P(dev->mutex);
if (dev->dev_blocked && !pthread_equal(dev->no_wait_id, pthread_self())) {
- dev->num_waiting++; /* indicate that I am waiting */
+ dev->num_waiting++; /* indicate that I am waiting */
while (dev->dev_blocked) {
- if ((stat = pthread_cond_wait(&dev->wait, &dev->mutex)) != 0) {
- V(dev->mutex);
+ if ((stat = pthread_cond_wait(&dev->wait, &dev->mutex)) != 0) {
+ V(dev->mutex);
Emsg1(M_ABORT, 0, _("pthread_cond_wait failure. ERR=%s\n"),
- strerror(stat));
- }
+ strerror(stat));
+ }
}
- dev->num_waiting--; /* no longer waiting */
+ dev->num_waiting--; /* no longer waiting */
}
}
-void unlock_device(DEVICE *dev)
+/*
+ * Check if the device is blocked or not
+ */
+bool is_device_unmounted(DEVICE *dev)
+{
+ bool stat;
+ int blocked = dev->dev_blocked;
+ stat = (blocked == BST_UNMOUNTED) ||
+ (blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP);
+ return stat;
+}
+
+void _unlock_device(const char *file, int line, DEVICE *dev)
{
- Dmsg0(90, "unlock\n");
+ Dmsg2(500, "unlock from %s:%d\n", file, line);
V(dev->mutex);
}
-/*
+/*
* Block all other threads from using the device
* Device must already be locked. After this call,
* the device is blocked to any thread calling lock_device(),
* the current thread can do slip through the lock_device()
* calls without blocking.
*/
-void block_device(DEVICE *dev, int state)
+void _block_device(const char *file, int line, DEVICE *dev, int state)
{
- Dmsg1(90, "block set %d\n", state);
- ASSERT(dev->dev_blocked == BST_NOT_BLOCKED);
- dev->dev_blocked = state; /* make other threads wait */
+ Dmsg3(500, "block set %d from %s:%d\n", state, file, line);
+ ASSERT(dev->get_blocked() == BST_NOT_BLOCKED);
+ dev->set_blocked(state); /* make other threads wait */
dev->no_wait_id = pthread_self(); /* allow us to continue */
}
+
+
/*
* Unblock the device, and wake up anyone who went to sleep.
*/
-void unblock_device(DEVICE *dev)
+void _unblock_device(const char *file, int line, DEVICE *dev)
{
- Dmsg1(90, "unblock %d\n", dev->dev_blocked);
+ Dmsg3(500, "unblock %s from %s:%d\n", dev->print_blocked(), file, line);
ASSERT(dev->dev_blocked);
- dev->dev_blocked = BST_NOT_BLOCKED;
+ dev->set_blocked(BST_NOT_BLOCKED);
+ dev->no_wait_id = 0;
+ if (dev->num_waiting > 0) {
+ pthread_cond_broadcast(&dev->wait); /* wake them up */
+ }
+}
+
+/*
+ * Enter with device locked and blocked
+ * Exit with device unlocked and blocked by us.
+ */
+void _steal_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold, int state)
+{
+
+ Dmsg3(400, "steal lock. old=%s from %s:%d\n", dev->print_blocked(),
+ file, line);
+ hold->dev_blocked = dev->get_blocked();
+ hold->dev_prev_blocked = dev->dev_prev_blocked;
+ hold->no_wait_id = dev->no_wait_id;
+ dev->set_blocked(state);
+ Dmsg1(400, "steal lock. new=%s\n", dev->print_blocked());
+ dev->no_wait_id = pthread_self();
+ V(dev->mutex);
+}
+
+/*
+ * Enter with device blocked by us but not locked
+ * Exit with device locked, and blocked by previous owner
+ */
+void _give_back_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold)
+{
+ Dmsg3(400, "return lock. old=%s from %s:%d\n",
+ dev->print_blocked(), file, line);
+ P(dev->mutex);
+ dev->dev_blocked = hold->dev_blocked;
+ dev->dev_prev_blocked = hold->dev_prev_blocked;
+ dev->no_wait_id = hold->no_wait_id;
+ Dmsg1(400, "return lock. new=%s\n", dev->print_blocked());
if (dev->num_waiting > 0) {
pthread_cond_broadcast(&dev->wait); /* wake them up */
}
projects / bacula / bacula / blobdiff