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cp --reflink=auto to speed up clone/backup/restore on btrfs

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Rusty Bird 2015-11-10 17:10:03 +00:00
parent 34f7ddd41e
commit 3e3ac36f58
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GPG Key ID: 469D78F47AAF2ADF
2 changed files with 3 additions and 3 deletions
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4
core/backup.py
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@ -1992,7 +1992,7 @@ def backup_restore_do(restore_info,
backup_dir)
# We prefer to use Linux's cp, because it nicely handles sparse files
cp_retcode = subprocess.call(["cp", "-rp", backup_src_dir, dst_dir])
cp_retcode = subprocess.call(["cp", "-rp", "--reflink=auto", backup_src_dir, dst_dir])
if cp_retcode != 0:
raise QubesException(
"*** Error while copying file {0} to {1}".format(backup_src_dir,
@ -2224,7 +2224,7 @@ def backup_restore_do(restore_info,
home_dir + '/' + restore_home_backupdir + '/' + f)
if format_version == 1:
subprocess.call(
["cp", "-nrp", backup_dom0_home_dir + '/' + f, home_file])
["cp", "-nrp", "--reflink=auto", backup_dom0_home_dir + '/' + f, home_file])
elif format_version >= 2:
shutil.move(backup_dom0_home_dir + '/' + f, home_file)
retcode = subprocess.call(['sudo', 'chown', '-R', local_user, home_dir])

2
core/storage/__init__.py
View File

@ -79,7 +79,7 @@ class QubesVmStorage(object):
# TODO: Windows support
# We prefer to use Linux's cp, because it nicely handles sparse files
retcode = subprocess.call (["cp", source, destination])
retcode = subprocess.call (["cp", "--reflink=auto", source, destination])
if retcode != 0:
raise IOError ("Error while copying {0} to {1}".\
format(source, destination))