The glimmer device at chromeos4-row7-rack2-host3 may be dying. Someone may want to check on the state of storage in this device, and retire if necessary.

I see the following in its kernel logs:

2018-08-03T07:57:15.357321+10:00 ERR kernel: [  232.761089] mmcblk0: error -110 transferring data, sector 776960, nr 256, cmd response 0x900, card status 0x80b00
2018-08-03T07:57:15.505497+10:00 INFO sshd[2828]: Received disconnect from 100.115.219.132 port 48517:11: disconnected by user
2018-08-03T07:57:15.505636+10:00 INFO sshd[2828]: Disconnected from user root 100.115.219.132 port 48517
2018-08-03T07:57:25.727840+10:00 INFO sshd[2835]: Accepted publickey for root from 100.115.219.132 port 48640 ssh2: RSA SHA256:Fp1qWjFLyK1cTpiI5rdk7iEJwoK9lcnYAgbQtGC3jzU
2018-08-03T07:57:27.805141+10:00 ERR kernel: [  245.229485] mmcblk0: error -110 transferring data, sector 1378304, nr 256, cmd response 0x900, card status 0x80b00
2018-08-03T07:57:36.083652+10:00 ERR kernel: [  253.520257] mmcblk0: error -110 transferring data, sector 1378304, nr 256, cmd response 0x900, card status 0x80b00
2018-08-03T07:57:36.083715+10:00 WARNING kernel: [  253.520275] mmcblk0: retrying using single block read
2018-08-03T07:57:44.371137+10:00 ERR kernel: [  261.822159] mmcblk0: error -110 transferring data, sector 1378476, nr 84, cmd response 0x900, card status 0x0
2018-08-03T07:57:52.648135+10:00 ERR kernel: [  270.112268] mmcblk0: error -110 transferring data, sector 1378476, nr 84, cmd response 0x900, card status 0x0
2018-08-03T07:57:52.648198+10:00 ERR kernel: [  270.112304] blk_update_request: I/O error, dev mmcblk0, sector 1378476
2018-08-03T07:58:00.878444+10:00 ERR kernel: [  278.354899] mmcblk0: error -110 transferring data, sector 1378479, nr 81, cmd response 0x900, card status 0x0
2018-08-03T07:58:09.155110+10:00 ERR kernel: [  286.645704] mmcblk0: error -110 transferring data, sector 1378479, nr 81, cmd response 0x900, card status 0x0
2018-08-03T07:58:09.155173+10:00 ERR kernel: [  286.645741] blk_update_request: I/O error, dev mmcblk0, sector 1378479
2018-08-03T07:58:17.431159+10:00 ERR kernel: [  294.934947] mmcblk0: error -110 transferring data, sector 1378472, nr 8, cmd response 0x900, card status 0x80b00
2018-08-03T07:58:17.546456+10:00 INFO sshd[2835]: Received disconnect from 100.115.219.132 port 48640:11: disconnected by user
2018-08-03T07:58:17.546562+10:00 INFO sshd[2835]: Disconnected from user root 100.115.219.132 port 48640
2018-08-03T07:58:27.765603+10:00 INFO sshd[2844]: Accepted publickey for root from 100.115.219.132 port 49197 ssh2: RSA SHA256:Fp1qWjFLyK1cTpiI5rdk7iEJwoK9lcnYAgbQtGC3jzU
2018-08-03T07:58:27.960172+10:00 ERR kernel: [  305.480605] mmcblk0: error -110 transferring data, sector 1703680, nr 256, cmd response 0x900, card status 0x80b00
2018-08-03T07:58:36.217402+10:00 ERR kernel: [  313.750869] mmcblk0: error -110 transferring data, sector 1703680, nr 256, cmd response 0x900, card status 0x80b00
2018-08-03T07:58:36.217549+10:00 WARNING kernel: [  313.750900] mmcblk0: retrying using single block read
2018-08-03T07:58:40.012820+10:00 WARNING metrics_daemon[2330]: [WARNING:persistent_integer.cc(96)] cannot open /var/lib/metrics/Platform.DailyUseTime for reading: No such file or directory
2018-08-03T07:58:44.522075+10:00 ERR kernel: [  322.069507] mmcblk0: error -110 transferring data, sector 1703868, nr 68, cmd response 0x900, card status 0x0
2018-08-03T07:58:52.785094+10:00 ERR kernel: [  330.345020] mmcblk0: error -110 transferring data, sector 1703868, nr 68, cmd response 0x900, card status 0x0
2018-08-03T07:58:52.785138+10:00 ERR kernel: [  330.345045] blk_update_request: I/O error, dev mmcblk0, sector 1703868
2018-08-03T07:59:00.978160+10:00 ERR kernel: [  338.551105] mmcblk0: error -110 transferring data, sector 1703869, nr 67, cmd response 0x900, card status 0x0
2018-08-03T07:59:00.978223+10:00 ERR kernel: [  338.551141] blk_update_request: I/O error, dev mmcblk0, sector 1703869
2018-08-03T07:59:09.170147+10:00 ERR kernel: [  346.756803] mmcblk0: error -110 transferring data, sector 1703870, nr 66, cmd response 0x900, card status 0x0
2018-08-03T07:59:09.170210+10:00 ERR kernel: [  346.756840] blk_update_request: I/O error, dev mmcblk0, sector 1703870
2018-08-03T07:59:17.363162+10:00 ERR kernel: [  354.962921] mmcblk0: error -110 transferring data, sector 1703871, nr 65, cmd response 0x900, card status 0x0