On Sunday, May 3, 2020 1:23 PM, Wols Lists <[email protected]> wrote:
> For anything above raid 1, MAKE SURE your drives support SCT/ERC. For > example, Seagate Barracudas are very popular desktop drives, but I guess > maybe HALF of the emails asking for help recovering an array on the raid > list involve them dying ... > > (I've got two :-( but my new system - when I get it running - has > ironwolves instead.) that's very scary. just to double check: are those help emails about linux's software RAID? or is it about hardware RAIDs? the reason i ask about software vs. hardware, is because of this wiki article [1] which seems to suggest that mdadm handles error recovery by waiting for up to 30 seconds (set in /sys/block/sd*/device/timeout) after which the device is reset. am i missing something? to me it seems that [1] seems to suggest that linux software raid has a reliable way to handle the issue? since i guess all disks support resetting well? [1] https://en.wikipedia.org/wiki/Error_recovery_control#Software_RAID
