On 3/9/26 6:40 AM, Erwan RIGOLLOT wrote:
Hello all,
Hi,
md5 : active raid5 sde1[9] sdd1[8] sdg1[5] sdf1[6] sdc1[7]
15627542528 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5]
[UUUUU]
(My problem is about MD5)
It appears as if md5 is happy (enough).
for i in c d e f g; do /usr/sbin/smartctl -a /dev/sd$i | grep "Serial\|^# 1\|
Try reading 1 MB ~ 1 GB from each of the disks.
for i in c d e f g; do dd if=/dev/sd${i} of=/dev/null bs=1M count=1; done
Raise count to read more than 1 MB from each drive.
I've had some really weird almost silent failures wherein the drive
would respond to the kernel for anything but data. Trying to read data,
especially more than a few (hundred) MB almost certainly exceeds any
cache and thus forces a read from disk.
If you can really read from the persistent media, then you know that you
don't have that particular problem.
So, my five disks seem to be ok.
Were you trying to do an online / mounted or offline / unmounted fsck?
I usually balk at this request, but I'd be remiss if I didn't ask; does
the problem continue after a reboot?
--
Grant. . . .
