- Anything in dmesg? - What does /etc/mdadm/mdadm.conf say? Also, using 20 disks in a single RAID-6 gives you the same chances for a parity+1 error (or worse) as compared to 10 drives in RAID-5. I would really recommend using smaller (8+2?) RAID-6 sets and rather use LVM on top (which you may be doing already?). Even with proper cooling and enterprise drives, 20 drives in a single RAID-6 is asking for trouble… roy ----- Opprinnelig melding ----- > The last couple of days I have received a warning about a missing > spare for a device that has several spares. > > A SparesMissing event had been detected on md device /dev/md1. > : > md1 : active raid6 sdas[12](S) sdx[0] sdaq[11](S) sdau[13](S) > sdah[9] sdaf[8] sdae[7] sdad[6] sdac[5] sdab[4] sdaa[3] sdz[2] sdy[1] > 31256138752 blocks super 1.2 level 6, 128k chunk, algorithm 2 > [10/10] [UUUUUUUUUU] > bitmap: 0/2 pages [0KB], 1048576KB chunk > > I have tried removing one of the spares and adding it again. Same > error. > > $ mdadm --version > mdadm - v3.1.4 - 31st August 2010 > $ uname -a > Linux orsted 3.2.0-0.bpo.1-amd64 #1 SMP Sat Feb 11 08:41:32 UTC 2012 > x86_64 GNU/Linux > > /Ole > > > The automated mail: > > This is an automatically generated mail message from mdadm > running on orsted > > A SparesMissing event had been detected on md device /dev/md1. > > Faithfully yours, etc. > > P.S. The /proc/mdstat file currently contains the following: > > Personalities : [raid6] [raid5] [raid4] [raid0] > md3 : active raid0 md1[0] md2[1] > 62512275456 blocks super 1.2 512k chunks > > md2 : active raid6 sdat[10] sdaj[0] sdao[8] sdag[7] sdap[6] sdan[5] > sdai[4] sdam[3] sdal[2] sdak[1] > 31256138752 blocks super 1.2 level 6, 128k chunk, algorithm 2 > [10/10] [UUUUUUUUUU] > bitmap: 0/2 pages [0KB], 1048576KB chunk > > md1 : active raid6 sdas[12](S) sdx[0] sdaq[11](S) sdau[13](S) sdah[9] > sdaf[8] sdae[7] sdad[6] sdac[5] sdab[4] sdaa[3] sdz[2] sdy[1] > 31256138752 blocks super 1.2 level 6, 128k chunk, algorithm 2 > [10/10] [UUUUUUUUUU] > bitmap: 0/2 pages [0KB], 1048576KB chunk > > md0 : active raid6 sdw[28](S) sdd[25] sdu[19] sdv[22] sdp[26] sds[16] > sdr[15] sdq[14] sdo[23] sdn[12] sdm[11] sdl[10] sdk[9] sdj[8] sdi[7] > sdh[6] sdc[20] sdf[4] sde[3] sdb[21] sdt[24] > 52744776192 blocks super 1.2 level 6, 256k chunk, algorithm 2 > [20/20] [UUUUUUUUUUUUUUUUUUUU] > bitmap: 1/2 pages [4KB], 1048576KB chunk > > unused devices: <none> > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@xxxxxxxxxxxxx http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
