Administrace komentářů

Mám malý komp v domácí síti, který slouží jako firewall, DHCP server, síťové úložiště, web/dlna/torrent server, atd. Vše nastavené podle doporučení na Arch wiki.

Čas od času mi datový disk s ext4, který používám jako síťové úložiště přes NFS, začne házet chyby (viz. logy níže). Ze začátku jsem si říkal, že to mohlo být výpadkem napájení, ale ani s UPS to nepřestalo, nebo že je to špatným nastavením NFS, vadným SATA kabelem, odcházející zakladní deskou, atd. Časem jsem točivý disk vyměnil za SSD, motherboard, zdroj i datový kabel za jiný. Nic nepomohlo.

Když problém nastane, stačí ve fstab zakomentovat montovaní toho disku, reboot, FS opravit pomocí fsck, znovu namontovat a jede se dál. Opakované testy neodhalily žádné vadné bloky. Když to bylo párkrát do roka, dalo se to přežít. Teď se to už děje i několikrát týdně.

Jsem naprosto v koncích a nevím, co dál vyzkoušet nebo zkontrolovat. Nějaké nápady?

/etc/fstab na serveru:

UUID=c8260cc9-5c7c-448a-948f-ec520ddb0f1f   /mnt/data   ext4   rw,noatime,nodiratime,discard,errors=remount-ro   0 2

/etc/fstab na desktopu:

server:/   /mnt/data-server   nfs4   defaults,_netdev,noatime,users,exec,noauto,x-systemd.automount,rsize=32768,wsize=32768   0 0

Relevantní dmesg logy:

ata4: SATA max UDMA/133 cmd 0x20a0 ctl 0x20d8 bmdma 0x2078 irq 19
...
ata4.00: SATA link down (SStatus 0 SControl 300)
ata4.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata4.01: ATA-9: Apacer AS350 1TB, H190117H, max UDMA/133
ata4.01: 2000409264 sectors, multi 16: LBA48 NCQ (depth 0/32)
ata4.01: configured for UDMA/133
...
sd 3:0:1:0: [sdc] 2000409264 512-byte logical blocks: (1.02 TB/954 GiB)
sd 3:0:1:0: [sdc] Write Protect is off
sd 3:0:1:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sdc: sdc1
sd 3:0:1:0: [sdc] Attached SCSI disk
...
EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: discard,errors=remount-ro. Quota mode: none.
...
ata4.00: link is slow to respond, please be patient (ready=-19)
ata4.00: SRST failed (errno=-16)
ata4.00: link is slow to respond, please be patient (ready=-19)
ata4.00: SRST failed (errno=-16)
ata4.00: link is slow to respond, please be patient (ready=-19)
ata4.00: SRST failed (errno=-16)
ata4.01: limiting SATA link speed to 1.5 Gbps
ata4.00: SRST failed (errno=-16)
ata4.00: reset failed, giving up
ata4.01: disabled
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=91s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 00 00 0b 20 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 2848 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 100, lost async page write
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 63 40 08 38 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 1665140792 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 208142343, lost async page write
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 63 40 08 80 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 1665140864 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 208142352, lost async page write
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 63 40 09 00 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 1665140992 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 208142368, lost async page write
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 63 40 0a 08 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 1665141256 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 208142401, lost async page write
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 63 41 09 00 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 1665206528 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 208150560, lost async page write
EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm nfsd: Error while async write back metadata
Aborting journal on device sdc1-8.
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 3b 84 08 00 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 998508544 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
blk_update_request: I/O error, dev sdc, sector 998508544 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 124813312, lost sync page write
JBD2: Error -5 detected when updating journal superblock for sdc1-8.
sd 3:0:1:0: [sdc] tag#0 FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK cmd_age=0s
sd 3:0:1:0: [sdc] tag#0 CDB: Write(10) 2a 00 00 00 08 00 00 00 08 00
blk_update_request: I/O error, dev sdc, sector 2048 op 0x1:(WRITE) flags 0x3800 phys_seg 1 prio class 0
blk_update_request: I/O error, dev sdc, sector 2048 op 0x1:(WRITE) flags 0x3800 phys_seg 1 prio class 0
Buffer I/O error on dev sdc1, logical block 0, lost sync page write
EXT4-fs (sdc1): I/O error while writing superblock
EXT4-fs (sdc1): Remounting filesystem read-only
EXT4-fs error (device sdc1) in ext4_delete_entry:2656: Journal has aborted