diff options
Diffstat (limited to 'mdadm.8.in')
| -rw-r--r-- | mdadm.8.in | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -884,14 +884,25 @@ bitmap, there is no need to specify this when assembling the array. .BR \-\-backup\-file= If .B \-\-backup\-file -was used to grow the number of raid-devices in a RAID5, and the system -crashed during the critical section, then the same +was used while reshaping an array (e.g. changing number of devices or +chunk size) and the system crashed during the critical section, then the same .B \-\-backup\-file must be presented to .B \-\-assemble to allow possibly corrupted data to be restored. .TP +.BR \-\-invalid\-backup +If the file needed for the above option is not available for any +reason an empty file can be given together with this option to +indicate that the backup file is invalid. In this case the data that +was being rearranged at the time of the crash could be irrecoverably +lost, but the rest of the array may still be recoverable. This option +should only be used as a last resort if there is no way to recover the +backup file. + + +.TP .BR \-U ", " \-\-update= Update the superblock on each device while assembling the array. The argument given to this flag can be one of |