Hi there, i usually build NAS on Debian releases, using consumer level hardware which natively doesn't support Sata hot swap.
This have never really been an issue since it's possibile to safely detach a disk (unmounted of course) using for example:
echo 1>/sys/block/sdb/device/delete
And then scanning again (with rescan-scsi-bus or whatever) when a new disk has been plugged.
I would say that the above strategy worked on same hardware from Debian 6 until Debian 8 (at least).
Starting with Debian10, I'm not always able to perform this operation, i get "Permission denied" when echoing to "/sys/block/sdb/device/delete" and in fact i see that "delete" is missing from the above path. The worst, i can't do a clean reboot (over ssh) and i'm forced to send magic sysrq to perform a reboot.
Does someone has an explanation (or where to look for), and are there alternatives?
Thank you so much
This have never really been an issue since it's possibile to safely detach a disk (unmounted of course) using for example:
echo 1>/sys/block/sdb/device/delete
And then scanning again (with rescan-scsi-bus or whatever) when a new disk has been plugged.
I would say that the above strategy worked on same hardware from Debian 6 until Debian 8 (at least).
Starting with Debian10, I'm not always able to perform this operation, i get "Permission denied" when echoing to "/sys/block/sdb/device/delete" and in fact i see that "delete" is missing from the above path. The worst, i can't do a clean reboot (over ssh) and i'm forced to send magic sysrq to perform a reboot.
Does someone has an explanation (or where to look for), and are there alternatives?
Thank you so much
