Hi everyone,
with my new SD card I always had some problem when waking up my NAS from sleep. I looked with
journalctl -bAnd I found this:
Code
Apr 25 11:07:57 delibird kernel: EXT4-fs warning (device sdf1): ext4_end_bio:323: I/O error 10 writing to inode 1311171 (offset 0 size 4096 starting b
lock 1779501)
Apr 25 11:07:57 delibird kernel: Buffer I/O error on device sdf1, logical block 1779244
Apr 25 11:07:57 delibird kernel: JBD2: Detected IO errors while flushing file data on sdf1-8
Apr 25 11:07:57 delibird kernel: Aborting journal on device sdf1-8.
Apr 25 11:07:56 delibird systemd[1]: apt-daily.timer: Adding 10h 2min 2.919720s random time.
Apr 25 11:07:56 delibird rrdcached[1576]: rotating journals
Apr 25 11:07:56 delibird systemd[1]: anacron.timer: Adding 3min 21.911751s random time.
Apr 25 11:07:56 delibird rrdcached[1576]: started new journal /var/lib/rrdcached/journal/rrd.journal.1524647276.507368
Apr 25 11:07:56 delibird systemd[1]: apt-daily-upgrade.timer: Adding 50min 2.884431s random time.
Apr 25 11:07:56 delibird rrdcached[1576]: removing old journal /var/lib/rrdcached/journal/rrd.journal.1524610801.778850
Apr 25 11:07:56 delibird systemd[1]: Started Run anacron jobs.
Apr 25 11:07:56 delibird postfix/qmgr[2871]: CECEA42CA4: from=<darkcharizard@hotmail.it>, size=2776, nrcpt=1 (queue active)
Apr 25 11:07:56 delibird systemd[1]: Starting Daily apt upgrade and clean activities...
Apr 25 11:07:56 delibird anacron[13494]: Anacron 2.3 started on 2018-04-25
Apr 25 11:07:56 delibird systemd[1]: Starting Clean php session files...
Apr 25 11:07:56 delibird anacron[13494]: Normal exit (0 jobs run)
Apr 25 11:07:56 delibird systemd[1]: anacron.timer: Adding 3min 27.141696s random time.
Apr 25 11:07:56 delibird collectd[1600]: rrdcached plugin: Successfully reconnected to RRDCacheD at unix:/var/run/rrdcached.sock
Apr 25 11:07:56 delibird systemd-sleep[13393]: System resumed.
Apr 25 11:07:56 delibird collectd[1600]: rrdcached plugin: rrdc_update (/var/lib/rrdcached/db/localhost/memory/memory-buffered.rrd, [1524647277:173744
128.000000], 1) failed: rrdcached: illegal attempt to update using time 1524647277.000000 when last update time is 1524647277.000000 (minimum one second step)
(status=-1)
Apr 25 11:07:57 delibird kernel: EXT4-fs error (device sdf1): ext4_journal_check_start:61: Detected aborted journal
Apr 25 11:07:57 delibird kernel: EXT4-fs (sdf1): Remounting filesystem read-only
Apr 25 11:07:57 delibird kernel: EXT4-fs error (device sdf1): ext4_journal_check_start:61: Detected aborted journal
How can I check my SD card health and eventually correct it? Otherwise I will send it back since it's new and I'll buy an SSD 
