* Zdenek Kabelac ([email protected]) wrote: > Dne 14. 06. 26 v 19:57 Dr. David Alan Gilbert napsal(a): > > Hi, > > I've got a repeatable raid hang/warn and would appreciate some pointers > > as where to debug. > > (I've been logging stuff on > > https://bugzilla.kernel.org/show_bug.cgi?id=221535 ) > > > > This started off as debugging a case where I'd get my RAID1 (on the host) > > getting a reliable 'rescheduling sector'/disk failure while running the > > qemu block test suite > > during a qemu build, but then I tried to build a smaller discrete > > test, and now I've got a simply triggerable warn and test hang. > > There's no errors from the underlying SATA layer on the storage, > > everything resyncs just fine. > > > > I've got an existing LVM vg ('main') with two mirrors on sda2, and sdb2 > > which are SATA disks. > > > > # lvcreate --type mirror --mirrors 1 -L 1G main /dev/sda2 /dev/sdb2 > > > > Hi > > It's probably worth to say here - the '--type mirror' is the OLD > (historical) DM mirror target implementation - this target is now in the not > so active development as users are supposed to be using newer (and faster) > md wrapped '--type raid1'
Ah, that might have been when I split off to using a separate test LV rather than risking my LV containing actual useful data and had to try and find the lvcreate command. > So if you use 'lvcreate -m1 ....' you get 'auto-magically' this > mirroring target. Thanks, Dave > But this obviously doesn't fix the problem if old mirror target... > > Regards > > Zdenek > -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ \ dave @ treblig.org | | In Hex / \ _________________________|_____ http://www.treblig.org |_______/
