linux/tools/hv
Vitaly Kuznetsov 07136793cc Tools: hv: vss: fix loop device detection
Commit ea81fdf098 ("Tools: hv: vss: Skip freezing filesystems backed by
loop") added skip for filesystems backed by loop device. However, it seems
the detection of such cases is incomplete.

It was found that with 'devicemapper' storage driver docker creates the
following chain:

NAME					MAJ:MIN
loop0					7:0
..docker-8:4-8473394-pool		253:0
  ..docker-8:4-8473394-eac...		253:1

so when we're looking at the mounted device we see major '253' and not '7'.

Solve the issue by walking /sys/dev/block/*/slaves chain and checking if
there's a loop device somewhere.

Other than that, don't skip mountpoints silently when stat() fails. In case
e.g. SELinux is failing stat we don't want to skip freezing everything
without letting user know about the failure.

Fixes: ea81fdf098 ("Tools: hv: vss: Skip freezing filesystems backed by loop")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 13:02:33 +02:00
..
hv_fcopy_daemon.c tools: hv: include string.h in hv_fcopy_daemon 2018-03-06 09:57:16 -08:00
hv_get_dhcp_info.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv_get_dns_info.sh Tools: hv: Add an example script to retrieve DNS entries 2012-09-04 15:59:27 -07:00
hv_kvp_daemon.c tools/hv: Fix IP reporting by KVP daemon with SRIOV 2018-03-06 09:57:16 -08:00
hv_set_ifconfig.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv_vss_daemon.c Tools: hv: vss: fix loop device detection 2018-07-03 13:02:33 +02:00
lsvmbus tools: hv: update lsvmbus to be compatible with python3 2018-07-03 13:02:33 +02:00
Makefile tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00