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# Copyright (C) 2015-2016 Red Hat, Inc. <http://www.redhat.com>
#
# 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
# any later version.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Description: Helper library for io modules.
"""
import os
import subprocess
from glusto.core import Glusto as g
def collect_mounts_arequal(mounts):
"""Collects arequal from all the mounts
Args:
mounts (list): List of all GlusterMount objs.
Returns:
tuple(bool, list):
On success returns (True, list of arequal-checksums of each mount)
On failure returns (False, list of arequal-checksums of each mount)
arequal-checksum for a mount would be 'None' when failed to
collect arequal for that mount.
"""
if isinstance(mounts, str):
mounts = [mounts]
# Collect arequal-checksum from all mounts
g.log.info("Start collecting arequal-checksum from all mounts")
all_mounts_procs = []
for mount_obj in mounts:
g.log.info("arequal-checksum of mount %s:%s", mount_obj.client_system,
mount_obj.mountpoint)
cmd = "arequal-checksum -p %s -i .trashcan" % mount_obj.mountpoint
proc = g.run_async(mount_obj.client_system, cmd,
user=mount_obj.user)
all_mounts_procs.append(proc)
all_mounts_arequal_checksums = []
_rc = True
for i, proc in enumerate(all_mounts_procs):
ret, out, _ = proc.async_communicate()
if ret != 0:
g.log.error("Collecting arequal-checksum failed on %s:%s",
mounts[i].client_system, mounts[i].mountpoint)
_rc = False
all_mounts_arequal_checksums.append(None)
else:
g.log.info("Collecting arequal-checksum successful on %s:%s",
mounts[i].client_system, mounts[i].mountpoint)
all_mounts_arequal_checksums.append(out)
return (_rc, all_mounts_arequal_checksums)
def log_mounts_info(mounts):
"""Logs mount information like df, stat, ls
Args:
mounts (list): List of all GlusterMount objs.
"""
if isinstance(mounts, str):
mounts = [mounts]
g.log.info("Start logging mounts information:")
for mount_obj in mounts:
g.log.info("Information of mount %s:%s", mount_obj.client_system,
mount_obj.mountpoint)
# Mount Info
g.log.info("Look For Mountpoint:\n")
cmd = "mount | grep %s" % mount_obj.mountpoint
_, _, _ = g.run(mount_obj.client_system, cmd)
# Disk Space Usage
g.log.info("Disk Space Usage Of Mountpoint:\n")
cmd = "df -h %s" % mount_obj.mountpoint
_, _, _ = g.run(mount_obj.client_system, cmd)
# Long list the mountpoint
g.log.info("List Mountpoint Entries:\n")
cmd = "ls -ld %s" % mount_obj.mountpoint
_, _, _ = g.run(mount_obj.client_system, cmd)
# Stat mountpoint
g.log.info("Mountpoint Status:\n")
cmd = "stat %s" % mount_obj.mountpoint
_, _, _ = g.run(mount_obj.client_system, cmd)
def get_mounts_stat(mounts):
"""Recursively get stat of the mountpoint
Args:
mounts (list): List of all GlusterMount objs.
Returns:
bool: True if recursively getting stat from all mounts is successful.
False otherwise.
"""
if isinstance(mounts, str):
mounts = [mounts]
g.log.info("Start getting stat of the mountpoint recursively")
all_mounts_procs = []
for mount_obj in mounts:
g.log.info("Stat of mount %s:%s", mount_obj.client_system,
mount_obj.mountpoint)
cmd = ("find %s | xargs stat" % (mount_obj.mountpoint))
proc = g.run_async(mount_obj.client_system, cmd,
user=mount_obj.user)
all_mounts_procs.append(proc)
_rc = True
for i, proc in enumerate(all_mounts_procs):
ret, _, _ = proc.async_communicate()
if ret != 0:
g.log.error("Stat of files and dirs under %s:%s Failed",
mounts[i].client_system, mounts[i].mountpoint)
_rc = False
else:
g.log.info("Stat of files and dirs under %s:%s is successful",
mounts[i].client_system, mounts[i].mountpoint)
return _rc
def list_all_files_and_dirs_mounts(mounts):
"""List all Files and Directories from mounts.
Args:
mounts (list): List of all GlusterMount objs.
Returns:
bool: True if listing file and dirs on mounts is successful.
False otherwise.
"""
if isinstance(mounts, str):
mounts = [mounts]
ignore_dirs_list = [".trashcan"]
ignore_dirs = "\|".join(ignore_dirs_list)
g.log.info("Start Listing mounts files and dirs")
all_mounts_procs = []
for mount_obj in mounts:
g.log.info("Listing files and dirs on %s:%s", mount_obj.client_system,
mount_obj.mountpoint)
cmd = ("find %s | grep -ve '%s'" % (mount_obj.mountpoint, ignore_dirs))
proc = g.run_async(mount_obj.client_system, cmd, user=mount_obj.user)
all_mounts_procs.append(proc)
_rc = True
for i, proc in enumerate(all_mounts_procs):
ret, _, _ = proc.async_communicate()
if ret != 0:
g.log.error("Failed to list all files and dirs under %s:%s",
mounts[i].client_system, mounts[i].mountpoint)
_rc = False
else:
g.log.info("Successfully listed all files and dirs under %s:%s",
mounts[i].client_system, mounts[i].mountpoint)
return _rc
def validate_io_procs(all_mounts_procs, mounts):
"""Validates whether IO was successful or not
Args:
all_mounts_procs (list): List of open connection descriptor as
returned by g.run_async method.
mounts (list): List of all GlusterMount objs on which process were
started.
Returns:
bool: True if IO is successful on all mounts. False otherwise.
"""
if isinstance(all_mounts_procs, subprocess.Popen):
all_mounts_procs = [all_mounts_procs]
if isinstance(mounts, str):
mounts = [mounts]
_rc = True
g.log.info("Start validating IO procs")
for i, proc in enumerate(all_mounts_procs):
g.log.info("Validating IO on %s:%s", mounts[i].client_system,
mounts[i].mountpoint)
ret, _, _ = proc.async_communicate()
if ret != 0:
g.log.error("IO Failed on %s:%s", mounts[i].client_system,
mounts[i].mountpoint)
_rc = False
else:
g.log.info("IO Successful on %s:%s", mounts[i].client_system,
mounts[i].mountpoint)
return _rc
def wait_for_io_to_complete(all_mounts_procs, mounts):
"""Waits for IO to complete
Args:
all_mounts_procs (list): List of open connection descriptor as
returned by g.run_async method.
mounts (list): List of all GlusterMount objs on which process were
started.
Returns:
bool: True if IO is complete on all mounts. False otherwise.
"""
if isinstance(all_mounts_procs, subprocess.Popen):
all_mounts_procs = [all_mounts_procs]
if isinstance(mounts, str):
mounts = [mounts]
_rc = True
for i, proc in enumerate(all_mounts_procs):
g.log.info("Waiting for IO to be complete on %s:%s",
mounts[i].client_system, mounts[i].mountpoint)
ret, _, _ = proc.async_communicate()
if ret != 0:
g.log.error("IO Not complete on %s:%s", mounts[i].client_system,
mounts[i].mountpoint)
_rc = False
else:
g.log.info("IO is complete on %s:%s", mounts[i].client_system,
mounts[i].mountpoint)
return _rc
def cleanup_mounts(mounts):
"""Removes all the data from all the mountpoints
Args:
mounts (list): List of all GlusterMount objs.
Returns:
bool: True if cleanup is successful on all mounts. False otherwise.
"""
if isinstance(mounts, str):
mounts = [mounts]
g.log.info("Start cleanup mounts")
all_mounts_procs = []
valid_mounts = []
for mount_obj in mounts:
g.log.info("Cleaning up data from %s:%s", mount_obj.client_system,
mount_obj.mountpoint)
if (not mount_obj.mountpoint or
(os.path.realpath(os.path.abspath(mount_obj.mountpoint))
is '/')):
g.log.error("%s on %s is not a valid mount point",
mount_obj.mountpoint, mount_obj.client_system)
continue
cmd = "rm -rf %s/*" % (mount_obj.mountpoint)
proc = g.run_async(mount_obj.client_system, cmd,
user=mount_obj.user)
all_mounts_procs.append(proc)
valid_mounts.append(mount_obj)
g.log.info("rm -rf on all clients is complete. Validating "
"deletion now...")
# Get cleanup status
_rc_rmdir = True
for i, proc in enumerate(all_mounts_procs):
ret, out, err = proc.async_communicate()
if ret != 0 or out or err:
g.log.error("Deleting files/dirs Failed on %s:%s",
valid_mounts[i].client_system,
valid_mounts[i].mountpoint)
_rc_rmdir = False
else:
g.log.info("Deleting files/dirs is successful on %s:%s",
valid_mounts[i].client_system,
valid_mounts[i].mountpoint)
if _rc_rmdir:
g.log.info("Successfully deleted files/dirs from all mounts")
else:
g.log.error("Deleting files/dirs failed on some of the mounts")
# Check if mount points are empty
ignore_dirs_list = [".trashcan"]
ignore_dirs = "\|".join(ignore_dirs_list)
all_mounts_procs = []
for mount_obj in mounts:
cmd = ("find %s -mindepth 1 | grep -ve '%s'" %
(mount_obj.mountpoint, ignore_dirs))
proc = g.run_async(mount_obj.client_system, cmd,
user=mount_obj.user)
all_mounts_procs.append(proc)
# Get cleanup status
_rc_lookup = True
for i, proc in enumerate(all_mounts_procs):
ret, out, err = proc.async_communicate()
if ret == 0:
g.log.error("Mount %s on %s is still having entries:\n%s",
mounts[i].mountpoint, mounts[i].client_system, out)
_rc_lookup = False
else:
g.log.info("Mount %s on %s is cleaned up\n%s",
mounts[i].mountpoint, mounts[i].client_system, out)
if _rc_lookup:
g.log.info("All the mounts are successfully cleaned up")
else:
g.log.error("Failed to cleanup all mounts")
# List mounts entries
g.log.info("Listing mounts entries:")
list_all_files_and_dirs_mounts(mounts)
return _rc_lookup
|
