after an alarm on `labstore1002` about high load, after reboot some `labstore` LVs can't be mounted:
```
root@labstore1002:~# pvs
/dev/sdaw: read failed after 0 of 4096 at 0: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 1999844081664: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 1999844139008: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 4096: Input/output error
Couldn't find device with uuid nda3CC-Lx5b-j3QA-seRB-vj2t-3vPI-ZYCfrw.
Couldn't find device with uuid mun2PU-aeD8-AE0L-Zof6-LUvc-E6i5-U3jP0u.
PV VG Fmt Attr PSize PFree
/dev/md0 os lvm2 a-- 1.82t 1.71t
/dev/md124 labstore lvm2 a-- 10.91t 934.25g
/dev/md126 labstore lvm2 a-- 10.91t 2.91t
/dev/md127 backup lvm2 a-- 18.19t 2.16t
unknown device labstore lvm2 a-m 10.91t 959.24g
unknown device labstore lvm2 a-m 10.91t 0
root@labstore1002:~#
```
```
root@labstore1002:~# lvs
/dev/sdaw: read failed after 0 of 4096 at 0: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 1999844081664: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 1999844139008: Input/output error
/dev/sdaw: read failed after 0 of 4096 at 4096: Input/output error
Couldn't find device with uuid nda3CC-Lx5b-j3QA-seRB-vj2t-3vPI-ZYCfrw.
Couldn't find device with uuid mun2PU-aeD8-AE0L-Zof6-LUvc-E6i5-U3jP0u.
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
backup backup Vwi-a-tz-- 40.00t space 25.76
journal backup -wi-a----- 128.00m
jun9 backup Vri-a-tz-- 40.00t space backup 25.64
safety backup Vri-a-tz-- 40.00t space backup 22.17
space backup twi-a-tz-- 16.00t 65.59 33.68
maps labstore owi-aos--- 6.00t
maps20150820040006 labstore swi-a-s--- 1.00t maps 3.11
maps20150825040007 labstore swi-a-s--- 1.00t maps 1.60
maps20150826040006 labstore swi-a-s--- 1.00t maps 1.26
maps20150827040006 labstore swi-a-s--- 1.00t maps 0.95
others labstore owi---s-p- 10.91t
others20150826030006 labstore swi---s--- 1.00t others
others20150827030006 labstore swi---s--- 1.00t others
others20150828103405 labstore swi---s-p- 1.00t others
others20150829030006 labstore swi---s--- 1.00t others
others20150830030044 labstore swi---s--- 1.00t others
scratch labstore -wi-----p- 999.00g
tools labstore owi---s-p- 8.00t
tools20150827020009 labstore swi---s--- 1.00t tools
tools20150828170740 labstore swi---s--- 1.00t tools
tools20150829020007 labstore swi---s--- 1.00t tools
tools20150830020008 labstore swi---s--- 1.00t tools
root os -wi-ao---- 18.62g
var os -wi-a----- 93.13g
root@labstore1002:~#
```