diff options
Diffstat (limited to 'src/utils/sys-utils/xlosetup.8')
| -rw-r--r-- | src/utils/sys-utils/xlosetup.8 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/utils/sys-utils/xlosetup.8 b/src/utils/sys-utils/xlosetup.8 index 4e063e6..c948899 100644 --- a/src/utils/sys-utils/xlosetup.8 +++ b/src/utils/sys-utils/xlosetup.8 @@ -68,6 +68,13 @@ It's possible to create more independent xloop devices for the same backing file. .B This setup may be dangerous, can cause data loss, corruption and overwrites. Use \fB\-\-nooverlap\fR with \fB\-\-find\fR during setup to avoid this problem. +.sp +The xloop device setup is not an atomic operation when used with \fB\-\-find\fP, and +.B xlosetup +does not protect this operation by any lock. The number of attempts is +internally restricted to a maximum of 64. It is recommended to use for example +.BR flock (1) +to avoid a collision in heavily parallel use cases. .SH OPTIONS The \fIsize\fR and \fIoffset\fR |