проверьте устройство MD RAID6 на наличие ошибок, также известное как Linux Software RAID (check MD RAID6 device for errors aka Linux Software RAID)
Имя (Name)
raid6check - check MD RAID6 device for errors aka Linux Software
RAID
Синопсис (Synopsis)
raid6check <raid6 device> <start stripe> <number of stripes>
Описание (Description)
RAID6 devices in which one single component drive has errors can
use the double parity in order to find out which component drive.
The "raid6check" tool checks, for each stripe, the double parity
consistency, reports mismatches and, if possible, which component
drive has the mismatch. Since it works at stripe level, it can
report different drives with mismatches at different stripes.
"raid6check" requires a non-degraded RAID6 MD device as first
parameter, a starting stripe (usually 0) and the number of
stripes to be checked. If this third parameter is also 0, it
will check the array up to the end.
"raid6check" will start printing information about the RAID6,
then for each stripe, it will report the parity rotation status.
In case of parity mismatches, "raid6check" reports, if possible,
which component drive could be responsible. Otherwise it reports
that it is not possible to find the component drive.
If the given MD device is not a RAID6, "raid6check" will, of
course, not continue.
If the RAID6 MD device is degraded, "raid6check" will report an
error and it will not proceed further.
No write operations are performed on the array or the components.
Furthermore, the checked array can be online and in use during
the operation of "raid6check".
Примеры (Examples)
raid6check /dev/md0 0 0
This will check /dev/md0 from start to end.
raid6check /dev/md3 0 1
This will check the first stripe of /dev/md3.
raid6check /dev/md1 1000 0
This will check /dev/md1 from stripe 1000 up to the end.
raid6check /dev/m127 128 256
This will check 256 stripes of /dev/md127 starting from stripe
128.
raid6check /dev/md0 0 0 | grep -i error > md0_err.log
This will check /dev/md0 completely and create a log file only
with errors, if any.
Файлы (Files)
"raid6check" uses directly the component drives as found in /dev.
Furthermore, the sysfs interface is needed in order to find out
the RAID6 parameters.
Ошибки (баги) (Bugs)
Negative parameters can lead to unexpected results.
It is not clear what will happen if the RAID6 MD device gets
degraded during the check.
The latest version of raid6check should always be available from
https://www.kernel.org/pub/linux/utils/raid/mdadm/
Related man pages:
mdadm(8) mdmon(8), mdadm.conf(5), md(4).
