snapshot for /dev/sda1 hung on CentOS 8.4

[zhanghaiyang9999]

OS: CentOS Linux release 8.4.2105 Kernel Version: 4.18.0-305.19.1.el8_4.x86_64/4.18.0-305.7.1.el8_4.x86_64

run command: dbdctl setup-snapshot /dev/sda1 /boot/.datto 0

After a while, will lead the OS hung, the /dev/sda1 is /boot volume, xfs filesystem.

and some errors in dmesg

[ 172.512467] datto: error finding original_mrf: -14 [ 174.128111] datto: error finding original_mrf: -14 [ 181.728482] datto: error finding original_mrf: -14 [ 181.728552] datto: error finding original_mrf: -14 [ 181.728691] datto: error finding original_mrf: -14 [ 181.728904] datto: error finding original_mrf: -14

[yito24]

It has been fixed in the forked elastio driver. But it hasn't been fixed in dattobd yet.

252

[dakotarwilliams]

Fixed #264